Servers can defer destaging any data and updating the mtime until close().
This means that if we do a setinfo to modify the mtime while other handles
are open for write the server may overwrite our setinfo timestamps when
if flushes the file on close() of the writeable handle.
To solve this we add an explicit flush when the mtime is about to
be updated.
This fixes "cp -p" to preserve mtime when copying a file onto an SMB2 share.
CC: Stable <stable@vger.kernel.org>
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
We can cut one third of the traffic on open by not querying the
inode number explicitly via SMB3 query_info since it is now
returned on open in the qfid context.
This is better in multiple ways, and
speeds up file open about 10% (more if network is slow).
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Highlights include:
Stable fixes:
- SUNRPC: Ensure bvecs are re-synced when we re-encode the RPC request
- Fix an Oops in ff_layout_track_ds_error due to a PTR_ERR() dereference
- Revert buggy NFS readdirplus optimisation
- NFSv4: Handle the special Linux file open access mode
- pnfs: Fix a problem where we gratuitously start doing I/O through the MDS
Features:
- Allow NFS client to set up multiple TCP connections to the server using
a new 'nconnect=X' mount option. Queue length is used to balance load.
- Enhance statistics reporting to report on all transports when using
multiple connections.
- Speed up SUNRPC by removing bh-safe spinlocks
- Add a mechanism to allow NFSv4 to request that containers set a
unique per-host identifier for when the hostname is not set.
- Ensure NFSv4 updates the lease_time after a clientid update
Bugfixes and cleanup:
- Fix use-after-free in rpcrdma_post_recvs
- Fix a memory leak when nfs_match_client() is interrupted
- Fix buggy file access checking in NFSv4 open for execute
- disable unsupported client side deduplication
- Fix spurious client disconnections
- Fix occasional RDMA transport deadlock
- Various RDMA cleanups
- Various tracepoint fixes
- Fix the TCP callback channel to guarantee the server can actually send
the number of callback requests that was negotiated at mount time.
-----BEGIN PGP SIGNATURE-----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=eR7d
-----END PGP SIGNATURE-----
Merge tag 'nfs-for-5.3-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client updates from Trond Myklebust:
"Highlights include:
Stable fixes:
- SUNRPC: Ensure bvecs are re-synced when we re-encode the RPC
request
- Fix an Oops in ff_layout_track_ds_error due to a PTR_ERR()
dereference
- Revert buggy NFS readdirplus optimisation
- NFSv4: Handle the special Linux file open access mode
- pnfs: Fix a problem where we gratuitously start doing I/O through
the MDS
Features:
- Allow NFS client to set up multiple TCP connections to the server
using a new 'nconnect=X' mount option. Queue length is used to
balance load.
- Enhance statistics reporting to report on all transports when using
multiple connections.
- Speed up SUNRPC by removing bh-safe spinlocks
- Add a mechanism to allow NFSv4 to request that containers set a
unique per-host identifier for when the hostname is not set.
- Ensure NFSv4 updates the lease_time after a clientid update
Bugfixes and cleanup:
- Fix use-after-free in rpcrdma_post_recvs
- Fix a memory leak when nfs_match_client() is interrupted
- Fix buggy file access checking in NFSv4 open for execute
- disable unsupported client side deduplication
- Fix spurious client disconnections
- Fix occasional RDMA transport deadlock
- Various RDMA cleanups
- Various tracepoint fixes
- Fix the TCP callback channel to guarantee the server can actually
send the number of callback requests that was negotiated at mount
time"
* tag 'nfs-for-5.3-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (68 commits)
pnfs/flexfiles: Add tracepoints for detecting pnfs fallback to MDS
pnfs: Fix a problem where we gratuitously start doing I/O through the MDS
SUNRPC: Optimise transport balancing code
SUNRPC: Ensure the bvecs are reset when we re-encode the RPC request
pnfs/flexfiles: Fix PTR_ERR() dereferences in ff_layout_track_ds_error
NFSv4: Don't use the zero stateid with layoutget
SUNRPC: Fix up backchannel slot table accounting
SUNRPC: Fix initialisation of struct rpc_xprt_switch
SUNRPC: Skip zero-refcount transports
SUNRPC: Replace division by multiplication in calculation of queue length
NFSv4: Validate the stateid before applying it to state recovery
nfs4.0: Refetch lease_time after clientid update
nfs4: Rename nfs41_setup_state_renewal
nfs4: Make nfs4_proc_get_lease_time available for nfs4.0
nfs: Fix copy-and-paste error in debug message
NFS: Replace 16 seq_printf() calls by seq_puts()
NFS: Use seq_putc() in nfs_show_stats()
Revert "NFS: readdirplus optimization by cache mechanism" (memleak)
SUNRPC: Fix transport accounting when caller specifies an rpc_xprt
NFS: Record task, client ID, and XID in xdr_status trace points
...
Add tracepoints to allow debugging of the event chain leading to
a pnfs fallback to doing I/O through the MDS.
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
If the client has to stop in pnfs_update_layout() to wait for another
layoutget to complete, it currently exits and defaults to I/O through
the MDS if the layoutget was successful.
Fixes: d03360aaf5 ("pNFS: Ensure we return the error if someone kills...")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Cc: stable@vger.kernel.org # v4.20+
cifs has both source and destination inodes locked throughout the copy.
Like ->write_iter(), we update mtime and strip setuid bits of destination
file before copy and like ->read_iter(), we update atime of source file
after copy.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Prevent deadlock between open_shroot() and
cifs_mark_open_files_invalid() by releasing the lock before entering
SMB2_open, taking it again after and checking if we still need to use
the result.
Link: https://lore.kernel.org/linux-cifs/684ed01c-cbca-2716-bc28-b0a59a0f8521@prodrive-technologies.com/T/#u
Fixes: 3d4ef9a153 ("smb3: fix redundant opens on root")
Signed-off-by: Aurelien Aptel <aaptel@suse.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
CC: Stable <stable@vger.kernel.org>
mirror->mirror_ds can be NULL if uninitialised, but can contain
a PTR_ERR() if call to GETDEVICEINFO failed.
Fixes: 65990d1afb ("pNFS/flexfiles: Fix a deadlock on LAYOUTGET")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Cc: stable@vger.kernel.org # 4.10+
The NFSv4.1 protocol explicitly forbids us from using the zero stateid
together with layoutget, so when we see that nfs4_select_rw_stateid()
is unable to return a valid delegation, lock or open stateid, then
we should initiate recovery and retry.
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
- Bring fs/xfs/libxfs/xfs_trans_inode.c in sync with userspace libxfs.
- Convert the xfs administrator guide to rst and move it into the
official admin guide under Documentation
-----BEGIN PGP SIGNATURE-----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=+DS3
-----END PGP SIGNATURE-----
Merge tag 'xfs-5.3-merge-13' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs cleanups from Darrick Wong:
"We had a few more lateish cleanup patches come in for 5.3 -- a couple
of syncups with the userspace libxfs code and a conversion of the XFS
administrator's guide to ReST format.
Summary:
- Bring fs/xfs/libxfs/xfs_trans_inode.c in sync with userspace
libxfs.
- Convert the xfs administrator guide to rst and move it into the
official admin guide under Documentation"
* tag 'xfs-5.3-merge-13' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
Documentation: filesystem: Convert xfs.txt to ReST
xfs: sync up xfs_trans_inode with userspace
xfs: move xfs_trans_inode.c to libxfs/
-----BEGIN PGP SIGNATURE-----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=bdbT
-----END PGP SIGNATURE-----
Merge tag '4.3-rc-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs updates from Steve French:
"Fixes (three for stable) and improvements including much faster
encryption (SMB3.1.1 GCM)"
* tag '4.3-rc-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6: (27 commits)
smb3: smbdirect no longer experimental
cifs: fix crash in smb2_compound_op()/smb2_set_next_command()
cifs: fix crash in cifs_dfs_do_automount
cifs: fix parsing of symbolic link error response
cifs: refactor and clean up arguments in the reparse point parsing
SMB3: query inode number on open via create context
smb3: Send netname context during negotiate protocol
smb3: do not send compression info by default
smb3: add new mount option to retrieve mode from special ACE
smb3: Allow query of symlinks stored as reparse points
cifs: Fix a race condition with cifs_echo_request
cifs: always add credits back for unsolicited PDUs
fs: cifs: cifsssmb: Change return type of convert_ace_to_cifs_ace
add some missing definitions
cifs: fix typo in debug message with struct field ia_valid
smb3: minor cleanup of compound_send_recv
CIFS: Fix module dependency
cifs: simplify code by removing CONFIG_CIFS_ACL ifdef
cifs: Fix check for matching with existing mount
cifs: Properly handle auto disabling of serverino option
...
- support for rbd object-map and fast-diff features (myself). This
will speed up reads, discards and things like snap diffs on sparse
images.
- ceph.snap.btime vxattr to expose snapshot creation time (David
Disseldorp). This will be used to integrate with "Restore Previous
Versions" feature added in Windows 7 for folks who reexport ceph
through SMB.
- security xattrs for ceph (Zheng Yan). Only selinux is supported
for now due to the limitations of ->dentry_init_security().
- support for MSG_ADDR2, FS_BTIME and FS_CHANGE_ATTR features (Jeff
Layton). This is actually a single feature bit which was missing
because of the filesystem pieces. With this in, the kernel client
will finally be reported as "luminous" by "ceph features" -- it is
still being reported as "jewel" even though all required Luminous
features were implemented in 4.13.
- stop NULL-terminating ceph vxattrs (Jeff Layton). The convention
with xattrs is to not terminate and this was causing inconsistencies
with ceph-fuse.
- change filesystem time granularity from 1 us to 1 ns, again fixing
an inconsistency with ceph-fuse (Luis Henriques).
On top of this there are some additional dentry name handling and cap
flushing fixes from Zheng. Finally, Jeff is formally taking over for
Zheng as the filesystem maintainer.
-----BEGIN PGP SIGNATURE-----
iQFHBAABCAAxFiEEydHwtzie9C7TfviiSn/eOAIR84sFAl0u+X8THGlkcnlvbW92
QGdtYWlsLmNvbQAKCRBKf944AhHzi9byB/9fIxzoxtDMvixtJabuGSJRtlijDlWF
GlO6yIWCXl/8v8easR2PCF75U/xv0+QFQmze8PVi8u4Xz589P247NnEuyEZ9n84i
aCavARho6QLZPEL+B04NaqoHBl+ORKQTA6eKGhyKwRp/rn83z5Ubuw2tN7krHT3b
kCY61FuTQGxNY2o/WKv/iLwINYr7H23hCf0WwyyKH1bp7OegiQ14Ebn1NtfS3sMx
hS6h8Ya826vmUW0bCSS/9kzKYBCjksTig0HphUOHq6BoZJs++0b7GukIulRyuLfD
J9Gr9HGPoDCVzdmFfpn2FSlxdmqfO9amUSagd0ftLQfFlPlrpoULi0GW
=Bgxr
-----END PGP SIGNATURE-----
Merge tag 'ceph-for-5.3-rc1' of git://github.com/ceph/ceph-client
Pull ceph updates from Ilya Dryomov:
"Lots of exciting things this time!
- support for rbd object-map and fast-diff features (myself). This
will speed up reads, discards and things like snap diffs on sparse
images.
- ceph.snap.btime vxattr to expose snapshot creation time (David
Disseldorp). This will be used to integrate with "Restore Previous
Versions" feature added in Windows 7 for folks who reexport ceph
through SMB.
- security xattrs for ceph (Zheng Yan). Only selinux is supported for
now due to the limitations of ->dentry_init_security().
- support for MSG_ADDR2, FS_BTIME and FS_CHANGE_ATTR features (Jeff
Layton). This is actually a single feature bit which was missing
because of the filesystem pieces. With this in, the kernel client
will finally be reported as "luminous" by "ceph features" -- it is
still being reported as "jewel" even though all required Luminous
features were implemented in 4.13.
- stop NULL-terminating ceph vxattrs (Jeff Layton). The convention
with xattrs is to not terminate and this was causing
inconsistencies with ceph-fuse.
- change filesystem time granularity from 1 us to 1 ns, again fixing
an inconsistency with ceph-fuse (Luis Henriques).
On top of this there are some additional dentry name handling and cap
flushing fixes from Zheng. Finally, Jeff is formally taking over for
Zheng as the filesystem maintainer"
* tag 'ceph-for-5.3-rc1' of git://github.com/ceph/ceph-client: (71 commits)
ceph: fix end offset in truncate_inode_pages_range call
ceph: use generic_delete_inode() for ->drop_inode
ceph: use ceph_evict_inode to cleanup inode's resource
ceph: initialize superblock s_time_gran to 1
MAINTAINERS: take over for Zheng as CephFS kernel client maintainer
rbd: setallochint only if object doesn't exist
rbd: support for object-map and fast-diff
rbd: call rbd_dev_mapping_set() from rbd_dev_image_probe()
libceph: export osd_req_op_data() macro
libceph: change ceph_osdc_call() to take page vector for response
libceph: bump CEPH_MSG_MAX_DATA_LEN (again)
rbd: new exclusive lock wait/wake code
rbd: quiescing lock should wait for image requests
rbd: lock should be quiesced on reacquire
rbd: introduce copyup state machine
rbd: rename rbd_obj_setup_*() to rbd_obj_init_*()
rbd: move OSD request allocation into object request state machines
rbd: factor out __rbd_osd_setup_discard_ops()
rbd: factor out rbd_osd_setup_copyup()
rbd: introduce obj_req->osd_reqs list
...
conversion of fsdax in the v4.20 kernel.
- Add a 'resource' (root-only physical base address) sysfs attribute to
device-dax instances to correlate memory-blocks onlined via the kmem
driver with a given device instance.
-----BEGIN PGP SIGNATURE-----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=UB+H
-----END PGP SIGNATURE-----
Merge tag 'dax-for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull dax updates from Dan Williams:
"The fruits of a bug hunt in the fsdax implementation with Willy and a
small feature update for device-dax:
- Fix a hang condition that started triggering after the Xarray
conversion of fsdax in the v4.20 kernel.
- Add a 'resource' (root-only physical base address) sysfs attribute
to device-dax instances to correlate memory-blocks onlined via the
kmem driver with a given device instance"
* tag 'dax-for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
dax: Fix missed wakeup with PMD faults
device-dax: Add a 'resource' attribute
persistent memory device that allows a guest VM to use DAX mechanisms to
access a host-file with host-page-cache. It arranges for MAP_SYNC to
be disabled and instead triggers a host fsync() when a 'write-cache
flush' command is sent to the virtual disk device.
- Miscellaneous small fixups.
-----BEGIN PGP SIGNATURE-----
iQIcBAABAgAGBQJdMHwpAAoJEB7SkWpmfYgCUYoP/3vcgYBAaXNksyALF0iowPoP
z4J0KoaOA1CzRFEQtCWUQa84CWj+XoSewwSeyrIkqKQvx/gghXblK+GVjVzBn0BD
hmmiKr8af4DdxfzYdEXJp65cCpIiVMaJiGr20Aj9ObwvWJb4QZbz9q7hnPt6KgiI
jVND3BpP3OERb4ZFcibdmJT5foKooMcXVG6+luVe+hc1+ZZQxJBsBaqie4brQIFq
j59NX3HfHH2fr1vVwnVH0CO4tgbgYg9wZ2EivGu6wBWvORjrr7KiSSbOYP68EBtd
lUoNps+vQtGnfXGwNzAjp1wuknrQYYh4/KMKjep7hiZD39rgyvBpbHbyynKzQCWV
REe8cXr/nwphsENvBAUBiqY999EWVIxdT2iaVaSA6K/31JQAC5AFyxVK/P2Ke1SK
rvePZ++iLQ1o4phTxQPNlVUqF9jOrFVVICGwMDqaqSkOsD9YKQdFClfOF/1ntlDz
V0bs+Y0Pe8AJCd9ESep4X+vHAWRRIb4EQIuwLaX8RJoY+r1fGye9RPthpYYzvXKp
DI2iJztFO3anzj2i9htNPUFIaiUmIhzEvG32O2If2yc5FL02hMpHPoFx6vHhe6s3
f8OJ+olsJK+/IIrV8+DHqYvhzylOYIhmRTvIxIxaNDPHkhR1i2RDQ6KKK1YZmsr8
MjAZ+Ym0GadDivs+wcM6
=uAMG
-----END PGP SIGNATURE-----
Merge tag 'libnvdimm-for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm updates from Dan Williams:
"Primarily just the virtio_pmem driver:
- virtio_pmem
The new virtio_pmem facility introduces a paravirtualized
persistent memory device that allows a guest VM to use DAX
mechanisms to access a host-file with host-page-cache. It arranges
for MAP_SYNC to be disabled and instead triggers a host fsync()
when a 'write-cache flush' command is sent to the virtual disk
device.
- Miscellaneous small fixups"
* tag 'libnvdimm-for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
virtio_pmem: fix sparse warning
xfs: disable map_sync for async flush
ext4: disable map_sync for async flush
dax: check synchronous mapping is supported
dm: enable synchronous dax
libnvdimm: add dax_dev sync flag
virtio-pmem: Add virtio pmem driver
libnvdimm: nd_region flush callback support
libnvdimm, namespace: Drop uuid_t implementation detail
There is a hang issue while using fio to do some basic test. The issue
can be easily reproduced using the below script:
while true
do
fio --ioengine=io_uring -rw=write -bs=4k -numjobs=1 \
-size=1G -iodepth=64 -name=uring --filename=/dev/zero
done
After several minutes (or more), fio would block at
io_uring_enter->io_cqring_wait in order to waiting for previously
committed sqes to be completed and can't return to user anymore until
we send a SIGTERM to fio. After receiving SIGTERM, fio hangs at
io_ring_ctx_wait_and_kill with a backtrace like this:
[54133.243816] Call Trace:
[54133.243842] __schedule+0x3a0/0x790
[54133.243868] schedule+0x38/0xa0
[54133.243880] schedule_timeout+0x218/0x3b0
[54133.243891] ? sched_clock+0x9/0x10
[54133.243903] ? wait_for_completion+0xa3/0x130
[54133.243916] ? _raw_spin_unlock_irq+0x2c/0x40
[54133.243930] ? trace_hardirqs_on+0x3f/0xe0
[54133.243951] wait_for_completion+0xab/0x130
[54133.243962] ? wake_up_q+0x70/0x70
[54133.243984] io_ring_ctx_wait_and_kill+0xa0/0x1d0
[54133.243998] io_uring_release+0x20/0x30
[54133.244008] __fput+0xcf/0x270
[54133.244029] ____fput+0xe/0x10
[54133.244040] task_work_run+0x7f/0xa0
[54133.244056] do_exit+0x305/0xc40
[54133.244067] ? get_signal+0x13b/0xbd0
[54133.244088] do_group_exit+0x50/0xd0
[54133.244103] get_signal+0x18d/0xbd0
[54133.244112] ? _raw_spin_unlock_irqrestore+0x36/0x60
[54133.244142] do_signal+0x34/0x720
[54133.244171] ? exit_to_usermode_loop+0x7e/0x130
[54133.244190] exit_to_usermode_loop+0xc0/0x130
[54133.244209] do_syscall_64+0x16b/0x1d0
[54133.244221] entry_SYSCALL_64_after_hwframe+0x49/0xbe
The reason is that we had added a req to ctx->pending_async at the very
end, but it didn't get a chance to be processed. How could this happen?
fio#cpu0 wq#cpu1
io_add_to_prev_work io_sq_wq_submit_work
atomic_read() <<< 1
atomic_dec_return() << 1->0
list_empty(); <<< true;
list_add_tail()
atomic_read() << 0 or 1?
As atomic_ops.rst states, atomic_read does not guarantee that the
runtime modification by any other thread is visible yet, so we must take
care of that with a proper implicit or explicit memory barrier.
This issue was detected with the help of Jackie's <liuyun01@kylinos.cn>
Fixes: 31b5151064 ("io_uring: allow workqueue item to handle multiple buffered requests")
Signed-off-by: Zhengyuan Liu <liuzhengyuan@kylinos.cn>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Add a per-transport maximum limit in the socket case, and add
helpers to allow the NFSv4 code to discover that limit.
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Merge more updates from Andrew Morton:
"VM:
- z3fold fixes and enhancements by Henry Burns and Vitaly Wool
- more accurate reclaimed slab caches calculations by Yafang Shao
- fix MAP_UNINITIALIZED UAPI symbol to not depend on config, by
Christoph Hellwig
- !CONFIG_MMU fixes by Christoph Hellwig
- new novmcoredd parameter to omit device dumps from vmcore, by
Kairui Song
- new test_meminit module for testing heap and pagealloc
initialization, by Alexander Potapenko
- ioremap improvements for huge mappings, by Anshuman Khandual
- generalize kprobe page fault handling, by Anshuman Khandual
- device-dax hotplug fixes and improvements, by Pavel Tatashin
- enable synchronous DAX fault on powerpc, by Aneesh Kumar K.V
- add pte_devmap() support for arm64, by Robin Murphy
- unify locked_vm accounting with a helper, by Daniel Jordan
- several misc fixes
core/lib:
- new typeof_member() macro including some users, by Alexey Dobriyan
- make BIT() and GENMASK() available in asm, by Masahiro Yamada
- changed LIST_POISON2 on x86_64 to 0xdead000000000122 for better
code generation, by Alexey Dobriyan
- rbtree code size optimizations, by Michel Lespinasse
- convert struct pid count to refcount_t, by Joel Fernandes
get_maintainer.pl:
- add --no-moderated switch to skip moderated ML's, by Joe Perches
misc:
- ptrace PTRACE_GET_SYSCALL_INFO interface
- coda updates
- gdb scripts, various"
[ Using merge message suggestion from Vlastimil Babka, with some editing - Linus ]
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (100 commits)
fs/select.c: use struct_size() in kmalloc()
mm: add account_locked_vm utility function
arm64: mm: implement pte_devmap support
mm: introduce ARCH_HAS_PTE_DEVMAP
mm: clean up is_device_*_page() definitions
mm/mmap: move common defines to mman-common.h
mm: move MAP_SYNC to asm-generic/mman-common.h
device-dax: "Hotremove" persistent memory that is used like normal RAM
mm/hotplug: make remove_memory() interface usable
device-dax: fix memory and resource leak if hotplug fails
include/linux/lz4.h: fix spelling and copy-paste errors in documentation
ipc/mqueue.c: only perform resource calculation if user valid
include/asm-generic/bug.h: fix "cut here" for WARN_ON for __WARN_TAINT architectures
scripts/gdb: add helpers to find and list devices
scripts/gdb: add lx-genpd-summary command
drivers/pps/pps.c: clear offset flags in PPS_SETPARAMS ioctl
kernel/pid.c: convert struct pid count to refcount_t
drivers/rapidio/devices/rio_mport_cdev.c: NUL terminate some strings
select: shift restore_saved_sigmask_unless() into poll_select_copy_remaining()
select: change do_poll() to return -ERESTARTNOHAND rather than -EINTR
...
btrfs_get_io_geometry() calls btrfs_get_chunk_map() to acquire a reference
on a extent_map, but on normal operation it does not drop this reference
anymore.
This leads to excessive kmemleak reports.
Always call free_extent_map(), not just in the error case.
Fixes: 5f1411265e ("btrfs: Introduce btrfs_io_geometry infrastructure")
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
If CONFIG_BTRFS_FS is y and CONFIG_LIBCRC32C is m,
building fails:
fs/btrfs/super.o: In function `btrfs_mount_root':
super.c:(.text+0xb7f9): undefined reference to `crc32c_impl'
fs/btrfs/super.o: In function `init_btrfs_fs':
super.c:(.init.text+0x3465): undefined reference to `crc32c_impl'
fs/btrfs/extent-tree.o: In function `hash_extent_data_ref':
extent-tree.c:(.text+0xe60): undefined reference to `crc32c'
extent-tree.c:(.text+0xe78): undefined reference to `crc32c'
extent-tree.c:(.text+0xe8b): undefined reference to `crc32c'
fs/btrfs/dir-item.o: In function `btrfs_insert_xattr_item':
dir-item.c:(.text+0x291): undefined reference to `crc32c'
fs/btrfs/dir-item.o: In function `btrfs_insert_dir_item':
dir-item.c:(.text+0x429): undefined reference to `crc32c'
Select LIBCRC32C to fix it.
Reported-by: Hulk Robot <hulkci@huawei.com>
Fixes: d5178578bc ("btrfs: directly call into crypto framework for checksumming")
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
As btrfs(5) specified:
Note
If nodatacow or nodatasum are enabled, compression is disabled.
If NODATASUM or NODATACOW set, we should not compress the extent.
Normally NODATACOW is detected properly in run_delalloc_range() so
compression won't happen for NODATACOW.
However for NODATASUM we don't have any check, and it can cause
compressed extent without csum pretty easily, just by:
mkfs.btrfs -f $dev
mount $dev $mnt -o nodatasum
touch $mnt/foobar
mount -o remount,datasum,compress $mnt
xfs_io -f -c "pwrite 0 128K" $mnt/foobar
And in fact, we have a bug report about corrupted compressed extent
without proper data checksum so even RAID1 can't recover the corruption.
(https://bugzilla.kernel.org/show_bug.cgi?id=199707)
Running compression without proper checksum could cause more damage when
corruption happens, as compressed data could make the whole extent
unreadable, so there is no need to allow compression for
NODATACSUM.
The fix will refactor the inode compression check into two parts:
- inode_can_compress()
As the hard requirement, checked at btrfs_run_delalloc_range(), so no
compression will happen for NODATASUM inode at all.
- inode_need_compress()
As the soft requirement, checked at btrfs_run_delalloc_range() and
compress_file_range().
Reported-by: James Harvey <jamespharvey20@gmail.com>
CC: stable@vger.kernel.org # 4.4+
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Move internal function declarations out of fs/internal.h into
include/linux/iomap.h so that our transition is complete.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Move the main iteration code into a separate file so that we can group
related functions in a single file instead of having a single enormous
source file.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Move the buffered IO code into a separate file so that we can group
related functions in a single file instead of having a single enormous
source file.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Move the direct IO code into a separate file so that we can group
related functions in a single file instead of having a single enormous
source file.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Move the SEEK_HOLE/SEEK_DATA code into a separate file so that we can
group related functions in a single file instead of having a single
enormous source file.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Move the file mapping reporting code (FIEMAP/FIBMAP) into a separate
file so that we can group related functions in a single file instead of
having a single enormous source file.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Move the swapfile activation code into a separate file so that we can
group related functions in a single file instead of having a single
enormous source file.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
We used to need rather convoluted ordering trickery to guarantee
that dput() of ex-mountpoints happens before the final mntput()
of the same. Since we don't need that anymore, there's no point
playing with fs_pin for that.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Lift getting the original mount (dentry is actually not needed at all)
of the mountpoint into the callers - to do_move_mount() and pivot_root()
level. That simplifies the cleanup in those and allows to get saner
arguments for attach_mnt_recursive().
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Using dput_to_list() to shift the contributing reference from ->mnt_mountpoint
to ->mnt_mp->m_dentry. Dentries are dropped (with dput_to_list()) as soon
as struct mountpoint is destroyed; in cases where we are under namespace_sem
we use the global list, shrinking it in namespace_unlock(). In case of
detaching stuck MNT_LOCKed children at final mntput_no_expire() we use a local
list and shrink it ourselves. ->mnt_ex_mountpoint crap is gone.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
RocksDB can hang indefinitely when using a DAX file. This is due to
a bug in the XArray conversion when handling a PMD fault and finding a
PTE entry. We use the wrong index in the hash and end up waiting on
the wrong waitqueue.
There's actually no need to wait; if we find a PTE entry while looking
for a PMD entry, we can return immediately as we know we should fall
back to a PTE fault (which may not conflict with the lock held).
We reuse the XA_RETRY_ENTRY to signal a conflicting entry was found.
This value can never be found in an XArray while holding its lock, so
it does not create an ambiguity.
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/CAPcyv4hwHpX-MkUEqxwdTj7wCCZCN4RV-L4jsnuwLGyL_UEG4A@mail.gmail.com
Fixes: b15cd80068 ("dax: Convert page fault handlers to XArray")
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Tested-by: Dan Williams <dan.j.williams@intel.com>
Reported-by: Robert Barror <robert.barror@intel.com>
Reported-by: Seema Pandit <seema.pandit@intel.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
One of the more common cases of allocation size calculations is finding
the size of a structure that has a zero-sized array at the end, along
with memory for some number of elements for that array. For example:
struct foo {
int stuff;
struct boo entry[];
};
size = sizeof(struct foo) + count * sizeof(struct boo);
instance = kmalloc(size, GFP_KERNEL);
Instead of leaving these open-coded and prone to type mistakes, we can now
use the new struct_size() helper:
instance = kmalloc(struct_size(instance, entry, count), GFP_KERNEL);
Also, notice that variable size is unnecessary, hence it is removed.
This code was detected with the help of Coccinelle.
Link: http://lkml.kernel.org/r/20190604164226.GA13823@embeddedor
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Now that restore_saved_sigmask_unless() is always called with the same
argument right before poll_select_copy_remaining() we can move it into
poll_select_copy_remaining() and make it the only caller of restore() in
fs/select.c.
The patch also renames poll_select_copy_remaining(),
poll_select_finish() looks better after this change.
kern_select() doesn't use set_user_sigmask(), so in this case
poll_select_finish() does restore_saved_sigmask_unless() "for no
reason". But this won't hurt, and WARN_ON(!TIF_SIGPENDING) is still
valid.
Link: http://lkml.kernel.org/r/20190606140915.GC13440@redhat.com
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: David Laight <David.Laight@aculab.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Deepa Dinamani <deepa.kernel@gmail.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Eric Wong <e@80x24.org>
Cc: Jason Baron <jbaron@akamai.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
do_poll() returns -EINTR if interrupted and after that all its callers
have to translate it into -ERESTARTNOHAND. Change do_poll() to return
-ERESTARTNOHAND and update (simplify) the callers.
Note that this also unifies all users of restore_saved_sigmask_unless(),
see the next patch.
Linus:
: The *right* return value will actually be then chosen by
: poll_select_copy_remaining(), which will turn ERESTARTNOHAND to EINTR
: when it can't update the timeout.
:
: Except for the cases that use restart_block and do that instead and
: don't have the whole timeout restart issue as a result.
Link: http://lkml.kernel.org/r/20190606140852.GB13440@redhat.com
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: David Laight <David.Laight@aculab.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Deepa Dinamani <deepa.kernel@gmail.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Eric Wong <e@80x24.org>
Cc: Jason Baron <jbaron@akamai.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
task->saved_sigmask and ->restore_sigmask are only used in the ret-from-
syscall paths. This means that set_user_sigmask() can save ->blocked in
->saved_sigmask and do set_restore_sigmask() to indicate that ->blocked
was modified.
This way the callers do not need 2 sigset_t's passed to set/restore and
restore_user_sigmask() renamed to restore_saved_sigmask_unless() turns
into the trivial helper which just calls restore_saved_sigmask().
Link: http://lkml.kernel.org/r/20190606113206.GA9464@redhat.com
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Deepa Dinamani <deepa.kernel@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Eric Wong <e@80x24.org>
Cc: Jason Baron <jbaron@akamai.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: David Laight <David.Laight@aculab.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Change return type of dirty_one_transaction from int to void. As this
function always return success.
Fixes below issue reported by coccicheck:
fs/reiserfs/journal.c:1690:5-8: Unneeded variable: "ret". Return "0" on line 1719
Link: http://lkml.kernel.org/r/20190702175430.GA5882@hari-Inspiron-1545
Signed-off-by: Hariprasad Kelam <hariprasad.kelam@gmail.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Bharath Vedartham <linux.bhar@gmail.com>
Cc: Hariprasad Kelam <hariprasad.kelam@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fixes gcc '-Wunused-but-set-variable' warning:
fs/ufs/super.c: In function ufs_statfs:
fs/ufs/super.c:1409:32: warning: variable usb3 set but not used [-Wunused-but-set-variable]
It is not used since commmit c596961d1b ("ufs: fix s_size/s_dsize
users")
Link: http://lkml.kernel.org/r/20190525140654.15924-1-yuehaibing@huawei.com
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Cc: Evgeniy Dushistov <dushistov@mail.ru>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
strncpy() was used to copy a fixed size buffer. Since NUL-terminating
string is not required here, prefer a memcpy function. The generated
code (ppc32) remains the same.
Silence the following warning triggered using W=1:
fs/hfsplus/xattr.c:410:3: warning: 'strncpy' output truncated before terminating nul copying 4 bytes from a string of the same length [-Wstringop-truncation]
Link: http://lkml.kernel.org/r/20190529113341.11972-1-malat@debian.org
Signed-off-by: Mathieu Malaterre <malat@debian.org>
Reviewed-by: Vyacheslav Dubeyko <slava@dubeyko.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This adds support for partial file caching in Coda. Every read, write
and mmap informs the userspace cache manager about what part of a file
is about to be accessed so that the cache manager can ensure the
relevant parts are available before the operation is allowed to proceed.
When a read or write operation completes, this is also reported to allow
the cache manager to track when partially cached content can be
released.
If the cache manager does not support partial file caching, or when the
entire file has been fetched into the local cache, the cache manager may
return an EOPNOTSUPP error to indicate that intent upcalls are no longer
necessary until the file is closed.
[akpm@linux-foundation.org: little whitespace fixup]
Link: http://lkml.kernel.org/r/20190618181301.6960-1-jaharkes@cs.cmu.edu
Signed-off-by: Pedro Cuadra <pjcuadra@gmail.com>
Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This patch moves cfi check in coda_ftoc() instead of repeating it in the
wild.
Module size
text data bss dec hex filename
28297 1040 700 30037 7555 fs/coda/coda.ko.before
28263 980 700 29943 74f7 fs/coda/coda.ko.after
Link: http://lkml.kernel.org/r/a2c27663ec4547018c92d71c63b1dff4650b6546.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Mikko Rapeli <mikko.rapeli@iki.fi>
Cc: Sam Protsenko <semen.protsenko@linaro.org>
Cc: Yann Droneaud <ydroneaud@opteya.com>
Cc: Zhouyang Jia <jiazhouyang09@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
coda_fid_to_inode() is only called by coda_downcall() where sb is already
being tested.
Link: http://lkml.kernel.org/r/d2163b3136348faf83ba47dc2d65a5d0a9a135dd.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Mikko Rapeli <mikko.rapeli@iki.fi>
Cc: Sam Protsenko <semen.protsenko@linaro.org>
Cc: Yann Droneaud <ydroneaud@opteya.com>
Cc: Zhouyang Jia <jiazhouyang09@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Inspired by NFS sysctl process
Link: http://lkml.kernel.org/r/9afcc2cd09490849b309786bbf47fef75de7f91c.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Mikko Rapeli <mikko.rapeli@iki.fi>
Cc: Sam Protsenko <semen.protsenko@linaro.org>
Cc: Yann Droneaud <ydroneaud@opteya.com>
Cc: Zhouyang Jia <jiazhouyang09@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
init_coda_psdev() was only called by __init function.
Link: http://lkml.kernel.org/r/a12a5a135fa6b0ea997e1a0af4be0a235c463a24.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Mikko Rapeli <mikko.rapeli@iki.fi>
Cc: Sam Protsenko <semen.protsenko@linaro.org>
Cc: Yann Droneaud <ydroneaud@opteya.com>
Cc: Zhouyang Jia <jiazhouyang09@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
max_t expression was already defined in coda sources
Link: http://lkml.kernel.org/r/e6cda497ce8691db155cb35f8d13ea44ca6cedeb.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Mikko Rapeli <mikko.rapeli@iki.fi>
Cc: Sam Protsenko <semen.protsenko@linaro.org>
Cc: Yann Droneaud <ydroneaud@opteya.com>
Cc: Zhouyang Jia <jiazhouyang09@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
We can safely destroy vc_mutex at the end of umount process.
Link: http://lkml.kernel.org/r/f436f68908c467c5663bc6a9251b52cd7b95d2a5.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Mikko Rapeli <mikko.rapeli@iki.fi>
Cc: Sam Protsenko <semen.protsenko@linaro.org>
Cc: Yann Droneaud <ydroneaud@opteya.com>
Cc: Zhouyang Jia <jiazhouyang09@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Nothing is left in this header that is used by userspace.
Link: http://lkml.kernel.org/r/bb11378cef94739f2cf89425dd6d302a52c64480.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Fabian Frederick <fabf@skynet.be>
Cc: Mikko Rapeli <mikko.rapeli@iki.fi>
Cc: Sam Protsenko <semen.protsenko@linaro.org>
Cc: Yann Droneaud <ydroneaud@opteya.com>
Cc: Zhouyang Jia <jiazhouyang09@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Move include/linux/coda_psdev.h to fs/coda/ as there's nothing else that
uses it.
Link: http://lkml.kernel.org/r/3ceeee0415a929b89fb02700b6b4b3a07938acb8.1558117389.git.jaharkes@cs.cmu.edu
Link: https://patchwork.kernel.org/patch/10590257/
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Cc: Yann Droneaud <ydroneaud@opteya.com>
Cc: Jan Harkes <jaharkes@cs.cmu.edu>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Fabian Frederick <fabf@skynet.be>
Cc: Mikko Rapeli <mikko.rapeli@iki.fi>
Cc: Sam Protsenko <semen.protsenko@linaro.org>
Cc: Zhouyang Jia <jiazhouyang09@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The out of tree module version had been bumped several times already,
but we haven't kept this in-tree one in sync, partly because most
changes go from here to the out-of-tree copy.
Link: http://lkml.kernel.org/r/8b0ab50a2da2f0180ac32c79d91811b4d1d0bd8b.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Fabian Frederick <fabf@skynet.be>
Cc: Mikko Rapeli <mikko.rapeli@iki.fi>
Cc: Sam Protsenko <semen.protsenko@linaro.org>
Cc: Yann Droneaud <ydroneaud@opteya.com>
Cc: Zhouyang Jia <jiazhouyang09@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The CODA_FREE() macro just calls kvfree(). We can call that directly
instead.
Link: http://lkml.kernel.org/r/4950a94fd30ec5f84835dd4ca0bb67c0448672f5.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Fabian Frederick <fabf@skynet.be>
Cc: Mikko Rapeli <mikko.rapeli@iki.fi>
Cc: Sam Protsenko <semen.protsenko@linaro.org>
Cc: Yann Droneaud <ydroneaud@opteya.com>
Cc: Zhouyang Jia <jiazhouyang09@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
These days we have kvzalloc() so we can delete CODA_ALLOC().
I made a couple related changes in coda_psdev_write(). First, I added
some error handling to avoid a NULL dereference if the allocation
failed. Second, I used kvmalloc() instead of kvzalloc() because we copy
over the memory on the next line so there is no need to zero it first.
Link: http://lkml.kernel.org/r/e56010c822e7a7cbaa8a238cf82ad31c67eaa800.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Fabian Frederick <fabf@skynet.be>
Cc: Mikko Rapeli <mikko.rapeli@iki.fi>
Cc: Sam Protsenko <semen.protsenko@linaro.org>
Cc: Yann Droneaud <ydroneaud@opteya.com>
Cc: Zhouyang Jia <jiazhouyang09@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Move the 32-bit time_t problems to userspace.
Link: http://lkml.kernel.org/r/8d089068823bfb292a4020f773922fbd82ffad39.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Fabian Frederick <fabf@skynet.be>
Cc: Mikko Rapeli <mikko.rapeli@iki.fi>
Cc: Sam Protsenko <semen.protsenko@linaro.org>
Cc: Yann Droneaud <ydroneaud@opteya.com>
Cc: Zhouyang Jia <jiazhouyang09@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
We exchange file timestamps with user space using psdev device
read/write operations with a fixed but architecture specific binary
layout.
On 32-bit systems, this uses a 'timespec' structure that is defined by
the C library to contain two 32-bit values for seconds and nanoseconds.
As we get ready for the year 2038 overflow of the 32-bit signed seconds,
the kernel now uses 64-bit timestamps internally, and user space will do
the same change by changing the 'timespec' definition in the future.
Unfortunately, this breaks the layout of the coda_vattr structure, so we
need to redefine that in terms of something that does not change. I'm
introducing a new 'struct vtimespec' structure here that keeps the
existing layout, and the same change has to be done in the coda user
space copy of linux/coda.h before anyone can use that on a 32-bit
architecture with 64-bit time_t.
An open question is what should happen to actual times past y2038, as
they are now truncated to the last valid date when sent to user space,
and interpreted as pre-1970 times when a timestamp with the MSB set is
read back into the kernel. Alternatively, we could change the new
timespec64_to_coda()/coda_to_timespec64() functions to use a different
interpretation and extend the available range further to the future by
disallowing past timestamps. This would require more changes in the
user space side though.
Link: http://lkml.kernel.org/r/562b7324149461743e4fbe2fedbf7c242f7e274a.1558117389.git.jaharkes@cs.cmu.edu
Link: https://patchwork.kernel.org/patch/10474735/
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Acked-by: Jan Harkes <jaharkes@cs.cmu.edu>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Fabian Frederick <fabf@skynet.be>
Cc: Mikko Rapeli <mikko.rapeli@iki.fi>
Cc: Sam Protsenko <semen.protsenko@linaro.org>
Cc: Yann Droneaud <ydroneaud@opteya.com>
Cc: Zhouyang Jia <jiazhouyang09@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Trivial fix to clean up indentation, replace spaces with tab
Link: http://lkml.kernel.org/r/ffc2bfa5a37ffcdf891c51b2e2ed618103965b24.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Fabian Frederick <fabf@skynet.be>
Cc: Mikko Rapeli <mikko.rapeli@iki.fi>
Cc: Sam Protsenko <semen.protsenko@linaro.org>
Cc: Yann Droneaud <ydroneaud@opteya.com>
Cc: Zhouyang Jia <jiazhouyang09@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Probably safer to just show the unexpected length and debug it from the
userspace side.
Link: http://lkml.kernel.org/r/582ae759a4fdfa31a64c35de489fa4efabac09d6.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Fabian Frederick <fabf@skynet.be>
Cc: Mikko Rapeli <mikko.rapeli@iki.fi>
Cc: Sam Protsenko <semen.protsenko@linaro.org>
Cc: Yann Droneaud <ydroneaud@opteya.com>
Cc: Zhouyang Jia <jiazhouyang09@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Add checks to make sure the downcall message we got from the Coda cache
manager is large enough to contain the data it is supposed to have.
i.e. when we get a CODA_ZAPDIR we can access &out->coda_zapdir.CodaFid.
Link: http://lkml.kernel.org/r/894fb6b250add09e4e3935f14649f21284a5cb18.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Fabian Frederick <fabf@skynet.be>
Cc: Mikko Rapeli <mikko.rapeli@iki.fi>
Cc: Sam Protsenko <semen.protsenko@linaro.org>
Cc: Yann Droneaud <ydroneaud@opteya.com>
Cc: Zhouyang Jia <jiazhouyang09@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
When fget fails, the lack of error-handling code may cause unexpected
results.
This patch adds error-handling code after calling fget.
Link: http://lkml.kernel.org/r/2514ec03df9c33b86e56748513267a80dd8004d9.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Zhouyang Jia <jiazhouyang09@gmail.com>
Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Fabian Frederick <fabf@skynet.be>
Cc: Mikko Rapeli <mikko.rapeli@iki.fi>
Cc: Sam Protsenko <semen.protsenko@linaro.org>
Cc: Yann Droneaud <ydroneaud@opteya.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Patch series "Coda updates".
The following patch series is a collection of various fixes for Coda,
most of which were collected from linux-fsdevel or linux-kernel but
which have as yet not found their way upstream.
This patch (of 22):
Various file systems expect that vma->vm_file points at their own file
handle, several use file_inode(vma->vm_file) to get at their inode or
use vma->vm_file->private_data. However the way Coda wrapped mmap on a
host file broke this assumption, vm_file was still pointing at the Coda
file and the host file systems would scribble over Coda's inode and
private file data.
This patch fixes the incorrect expectation and wraps vm_ops->open and
vm_ops->close to allow Coda to track when the vm_area_struct is
destroyed so we still release the reference on the Coda file handle at
the right time.
Link: http://lkml.kernel.org/r/0e850c6e59c0b147dc2dcd51a3af004c948c3697.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Fabian Frederick <fabf@skynet.be>
Cc: Mikko Rapeli <mikko.rapeli@iki.fi>
Cc: Sam Protsenko <semen.protsenko@linaro.org>
Cc: Yann Droneaud <ydroneaud@opteya.com>
Cc: Zhouyang Jia <jiazhouyang09@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
"passed_fileno" variable was deleted 11 years ago in 2.6.25.
Link: http://lkml.kernel.org/r/20190529201747.GA23248@avx2
Fixes: d20894a237 ("Remove a.out interpreter support in ELF loader")
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fixes gcc '-Wunused-but-set-variable' warning:
fs/binfmt_flat.c: In function load_flat_file:
fs/binfmt_flat.c:419:16: warning: variable inode set but not used [-Wunused-but-set-variable]
It's never used and can be removed.
Link: http://lkml.kernel.org/r/20190525125341.9844-1-yuehaibing@huawei.com
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Normally, the inode's i_uid/i_gid are translated relative to s_user_ns,
but this is not a correct behavior for proc. Since sysctl permission
check in test_perm is done against GLOBAL_ROOT_[UG]ID, it makes more
sense to use these values in u_[ug]id of proc inodes. In other words:
although uid/gid in the inode is not read during test_perm, the inode
logically belongs to the root of the namespace. I have confirmed this
with Eric Biederman at LPC and in this thread:
https://lore.kernel.org/lkml/87k1kzjdff.fsf@xmission.com
Consequences
============
Since the i_[ug]id values of proc nodes are not used for permissions
checks, this change usually makes no functional difference. However, it
causes an issue in a setup where:
* a namespace container is created without root user in container -
hence the i_[ug]id of proc nodes are set to INVALID_[UG]ID
* container creator tries to configure it by writing /proc/sys files,
e.g. writing /proc/sys/kernel/shmmax to configure shared memory limit
Kernel does not allow to open an inode for writing if its i_[ug]id are
invalid, making it impossible to write shmmax and thus - configure the
container.
Using a container with no root mapping is apparently rare, but we do use
this configuration at Google. Also, we use a generic tool to configure
the container limits, and the inability to write any of them causes a
failure.
History
=======
The invalid uids/gids in inodes first appeared due to 8175435777 (fs:
Update i_[ug]id_(read|write) to translate relative to s_user_ns).
However, AFAIK, this did not immediately cause any issues. The
inability to write to these "invalid" inodes was only caused by a later
commit 0bd23d09b8 (vfs: Don't modify inodes with a uid or gid unknown
to the vfs).
Tested: Used a repro program that creates a user namespace without any
mapping and stat'ed /proc/$PID/root/proc/sys/kernel/shmmax from outside.
Before the change, it shows the overflow uid, with the change it's 0.
The overflow uid indicates that the uid in the inode is not correct and
thus it is not possible to open the file for writing.
Link: http://lkml.kernel.org/r/20190708115130.250149-1-rburny@google.com
Fixes: 0bd23d09b8 ("vfs: Don't modify inodes with a uid or gid unknown to the vfs")
Signed-off-by: Radoslaw Burny <rburny@google.com>
Acked-by: Luis Chamberlain <mcgrof@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: "Eric W . Biederman" <ebiederm@xmission.com>
Cc: Seth Forshee <seth.forshee@canonical.com>
Cc: John Sperbeck <jsperbeck@google.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: <stable@vger.kernel.org> [4.8+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Don't repeat function signatures twice.
This is a kind-of-precursor for "struct proc_ops".
Note:
typeof(pde->proc_fops->...) ...;
can't be used because ->proc_fops is "const struct file_operations *".
"const" prevents assignment down the code and it can't be deleted in the
type system.
Link: http://lkml.kernel.org/r/20190529191110.GB5703@avx2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Since commit 2724273e8f ("vmcore: add API to collect hardware dump in
second kernel"), drivers are allowed to add device related dump data to
vmcore as they want by using the device dump API. This has a potential
issue, the data is stored in memory, drivers may append too much data
and use too much memory. The vmcore is typically used in a kdump kernel
which runs in a pre-reserved small chunk of memory. So as a result it
will make kdump unusable at all due to OOM issues.
So introduce new 'novmcoredd' command line option. User can disable
device dump to reduce memory usage. This is helpful if device dump is
using too much memory, disabling device dump could make sure a regular
vmcore without device dump data is still available.
[akpm@linux-foundation.org: tweak documentation]
[akpm@linux-foundation.org: vmcore.c needs moduleparam.h]
Link: http://lkml.kernel.org/r/20190528111856.7276-1-kasong@redhat.com
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Dave Young <dyoung@redhat.com>
Reviewed-by: Bhupesh Sharma <bhsharma@redhat.com>
Cc: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Cc: "David S . Miller" <davem@davemloft.net>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Baoquan He <bhe@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Unused Value that colin.king@canonical.com sent me and a
related fix I added.
-----BEGIN PGP SIGNATURE-----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=PJuy
-----END PGP SIGNATURE-----
Merge tag 'for-linus-5.3-ofs1' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux
Pull orangefs updates from Mike Marshall:
"Two small fixes.
This is just a fix for an unused value that Colin King sent me and a
related fix I added"
* tag 'for-linus-5.3-ofs1' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux:
orangefs: eliminate needless variable assignments
orangefs: remove redundant assignment to variable buffer_index
-----BEGIN PGP SIGNATURE-----
iQIzBAABCgAdFiEE8rQSAMVO+zA4DBdWxWXV+ddtWDsFAl0sNWYACgkQxWXV+ddt
WDsyQA/8CGnF68g6hwVuYz4K7f39gOiFlBnRxeN/3RT6vkNSyLZxvRDaDrSTzVIo
cz2G/9qZLXsIll+3EfZlyzZZiA+4f4hEDAfAd4yVPavRom+uu7dbqzAIpgvFlYdH
vhAYKOeWSqWElWJ06hzWO3FCwjY9GKFMk4PS0XHHp+STCT0hq1MkaHr44kiHsqdh
T5nVGDwXz8nGDZ51RO6+mgiSrd5eHbs6kXCd8rW7hmjTx8ClKHa1tdkxN/us+pJm
hTFT669m5ckHhY2AUKmkREoOwpnt2HcXQJNkz6gO+o03IDvYz73SScbhSYdNTlwi
j74GLf89FA52qVM+JDg9MaWYqgf1pQI8AHK/rXw2FNbuP/eL9kuZ85ZIbO6CiO0c
5jAixReSwzSP/V0+MKW3F7k4KtIqbHAV6mkI8zLwrAee4Xj81BOtgL7gYPFQTwSZ
ma0hEoen7IV5+/z9upUuLA5wr4BT+h1T+EllCWe1+9+9mRYOvowtkRNBL8HZWTDI
b65oTITfot54xX9ecKtiuG2qoqJEjjkR+YKdRM4nph6wflSNZxEoezBp3iRFpYOL
Lx+g97RcJ2EEoBVjVMkTqfj93GeiKRifa8yXdRY+A0I2ZXZEcS8DjSJM6rj3AOPy
4idIl+ABscayZowfqu0FSIULf1La0qiRXmbGNeG4ylhN4L6S/og=
=eshk
-----END PGP SIGNATURE-----
Merge tag 'for-5.3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs updates from David Sterba:
"Highlights:
- chunks that have been trimmed and unchanged since last mount are
tracked and skipped on repeated trims
- use hw assissed crc32c on more arches, speedups if native
instructions or optimized implementation is available
- the RAID56 incompat bit is automatically removed when the last
block group of that type is removed
Fixes:
- fsync fix for reflink on NODATACOW files that could lead to ENOSPC
- fix data loss after inode eviction, renaming it, and fsync it
- fix fsync not persisting dentry deletions due to inode evictions
- update ctime/mtime/iversion after hole punching
- fix compression type validation (reported by KASAN)
- send won't be allowed to start when relocation is in progress, this
can cause spurious errors or produce incorrect send stream
Core:
- new tracepoints for space update
- tree-checker: better check for end of extents for some tree items
- preparatory work for more checksum algorithms
- run delayed iput at unlink time and don't push the work to cleaner
thread where it's not properly throttled
- wrap block mapping to structures and helpers, base for further
refactoring
- split large files, part 1:
- space info handling
- block group reservations
- delayed refs
- delayed allocation
- other cleanups and refactoring"
* tag 'for-5.3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (103 commits)
btrfs: fix memory leak of path on error return path
btrfs: move the subvolume reservation stuff out of extent-tree.c
btrfs: migrate the delalloc space stuff to it's own home
btrfs: migrate btrfs_trans_release_chunk_metadata
btrfs: migrate the delayed refs rsv code
btrfs: Evaluate io_tree in find_lock_delalloc_range()
btrfs: migrate the global_block_rsv helpers to block-rsv.c
btrfs: migrate the block-rsv code to block-rsv.c
btrfs: stop using block_rsv_release_bytes everywhere
btrfs: cleanup the target logic in __btrfs_block_rsv_release
btrfs: export __btrfs_block_rsv_release
btrfs: export btrfs_block_rsv_add_bytes
btrfs: move btrfs_block_rsv definitions into it's own header
btrfs: Simplify update of space_info in __reserve_metadata_bytes()
btrfs: unexport can_overcommit
btrfs: move reserve_metadata_bytes and supporting code to space-info.c
btrfs: move dump_space_info to space-info.c
btrfs: export block_rsv_use_bytes
btrfs: move btrfs_space_info_add_*_bytes to space-info.c
btrfs: move the space info update macro to space-info.h
...
-----BEGIN PGP SIGNATURE-----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=smxY
-----END PGP SIGNATURE-----
Merge tag 'docs/v5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull rst conversion of docs from Mauro Carvalho Chehab:
"As agreed with Jon, I'm sending this big series directly to you, c/c
him, as this series required a special care, in order to avoid
conflicts with other trees"
* tag 'docs/v5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (77 commits)
docs: kbuild: fix build with pdf and fix some minor issues
docs: block: fix pdf output
docs: arm: fix a breakage with pdf output
docs: don't use nested tables
docs: gpio: add sysfs interface to the admin-guide
docs: locking: add it to the main index
docs: add some directories to the main documentation index
docs: add SPDX tags to new index files
docs: add a memory-devices subdir to driver-api
docs: phy: place documentation under driver-api
docs: serial: move it to the driver-api
docs: driver-api: add remaining converted dirs to it
docs: driver-api: add xilinx driver API documentation
docs: driver-api: add a series of orphaned documents
docs: admin-guide: add a series of orphaned documents
docs: cgroup-v1: add it to the admin-guide book
docs: aoe: add it to the driver-api book
docs: add some documentation dirs to the driver-api book
docs: driver-model: move it to the driver-api book
docs: lp855x-driver.rst: add it to the driver-api book
...
This fixes two problems reported with the cmdline simplification and
cleanup last year:
- the setproctitle() special cases didn't quite match the original
semantics, and it can be noticeable:
https://lore.kernel.org/lkml/alpine.LNX.2.21.1904052326230.3249@kich.toxcorp.com/
- it could leak an uninitialized byte from the temporary buffer under
the right (wrong) circustances:
https://lore.kernel.org/lkml/20190712160913.17727-1-izbyshev@ispras.ru/
It rewrites the logic entirely, splitting it into two separate commits
(and two separate functions) for the two different cases ("unedited
cmdline" vs "setproctitle() has been used to change the command line").
* proc-cmdline:
/proc/<pid>/cmdline: add back the setproctitle() special case
/proc/<pid>/cmdline: remove all the special cases
This makes the setproctitle() special case very explicit indeed, and
handles it with a separate helper function entirely. In the process, it
re-instates the original semantics of simply stopping at the first NUL
character when the original last NUL character is no longer there.
[ The original semantics can still be seen in mm/util.c: get_cmdline()
that is limited to a fixed-size buffer ]
This makes the logic about when we use the string lengths etc much more
obvious, and makes it easier to see what we do and what the two very
different cases are.
Note that even when we allow walking past the end of the argument array
(because the setproctitle() might have overwritten and overflowed the
original argv[] strings), we only allow it when it overflows into the
environment region if it is immediately adjacent.
[ Fixed for missing 'count' checks noted by Alexey Izbyshev ]
Link: https://lore.kernel.org/lkml/alpine.LNX.2.21.1904052326230.3249@kich.toxcorp.com/
Fixes: 5ab8271899 ("fs/proc: simplify and clarify get_mm_cmdline() function")
Cc: Jakub Jankowski <shasta@toxcorp.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Alexey Izbyshev <izbyshev@ispras.ru>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Start off with a clean slate that only reads exactly from arg_start to
arg_end, without any oddities. This simplifies the code and in the
process removes the case that caused us to potentially leak an
uninitialized byte from the temporary kernel buffer.
Note that in order to start from scratch with an understandable base,
this simplifies things _too_ much, and removes all the legacy logic to
handle setproctitle() having changed the argument strings.
We'll add back those special cases very differently in the next commit.
Link: https://lore.kernel.org/lkml/20190712160913.17727-1-izbyshev@ispras.ru/
Fixes: f5b65348fd ("proc: fix missing final NUL in get_mm_cmdline() rewrite")
Cc: Alexey Izbyshev <izbyshev@ispras.ru>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
We could queue a work for each req in defer and link list without
increasing async_list->cnt, so we shouldn't decrease it while exiting
from workqueue as well if we didn't process the req in async list.
Thanks to Jens Axboe <axboe@kernel.dk> for his guidance.
Fixes: 31b5151064 ("io_uring: allow workqueue item to handle multiple buffered requests")
Signed-off-by: Zhengyuan Liu <liuzhengyuan@kylinos.cn>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
sq->cached_sq_head and cq->cached_cq_tail are both unsigned int. If
cached_sq_head overflows before cached_cq_tail, then we may miss a
barrier req. As cached_cq_tail always follows cached_sq_head, the NQ
should be enough.
Cc: stable@vger.kernel.org
Fixes: de0617e467 ("io_uring: add support for marking commands as draining")
Signed-off-by: Zhengyuan Liu <liuzhengyuan@kylinos.cn>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
-----BEGIN PGP SIGNATURE-----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=g8xI
-----END PGP SIGNATURE-----
Merge tag 'for-linus-20190715' of git://git.kernel.dk/linux-block
Pull more block updates from Jens Axboe:
"A later pull request with some followup items. I had some vacation
coming up to the merge window, so certain things items were delayed a
bit. This pull request also contains fixes that came in within the
last few days of the merge window, which I didn't want to push right
before sending you a pull request.
This contains:
- NVMe pull request, mostly fixes, but also a few minor items on the
feature side that were timing constrained (Christoph et al)
- Report zones fixes (Damien)
- Removal of dead code (Damien)
- Turn on cgroup psi memstall (Josef)
- block cgroup MAINTAINERS entry (Konstantin)
- Flush init fix (Josef)
- blk-throttle low iops timing fix (Konstantin)
- nbd resize fixes (Mike)
- nbd 0 blocksize crash fix (Xiubo)
- block integrity error leak fix (Wenwen)
- blk-cgroup writeback and priority inheritance fixes (Tejun)"
* tag 'for-linus-20190715' of git://git.kernel.dk/linux-block: (42 commits)
MAINTAINERS: add entry for block io cgroup
null_blk: fixup ->report_zones() for !CONFIG_BLK_DEV_ZONED
block: Limit zone array allocation size
sd_zbc: Fix report zones buffer allocation
block: Kill gfp_t argument of blkdev_report_zones()
block: Allow mapping of vmalloc-ed buffers
block/bio-integrity: fix a memory leak bug
nvme: fix NULL deref for fabrics options
nbd: add netlink reconfigure resize support
nbd: fix crash when the blksize is zero
block: Disable write plugging for zoned block devices
block: Fix elevator name declaration
block: Remove unused definitions
nvme: fix regression upon hot device removal and insertion
blk-throttle: fix zero wait time for iops throttled group
block: Fix potential overflow in blk_report_zones()
blkcg: implement REQ_CGROUP_PUNT
blkcg, writeback: Implement wbc_blkcg_css()
blkcg, writeback: Add wbc->no_cgroup_owner
blkcg, writeback: Rename wbc_account_io() to wbc_account_cgroup_owner()
...
clarify Kconfig to indicate that smb direct
(SMB3 over RDMA) is no longer experimental.
Over the last three releases Long Li has
fixed various problems uncovered by xfstesting.
Signed-off-by: Steve French <stfrench@microsoft.com>
Acked-by: Ronnie Sahlberg <lsahlber@redhat.com>
RHBZ: 1722704
In low memory situations the various SMB2_*_init() functions can fail
to allocate a request PDU and thus leave the request iovector as NULL.
If we don't check the return code for failure we end up calling
smb2_set_next_command() with a NULL iovector causing a crash when it tries
to dereference it.
CC: Stable <stable@vger.kernel.org>
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Create the build infrastructure we need to start migrating iomap code to
fs/iomap/ from fs/iomap.c.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Add an XFS_ICHGTIME_CREATE case to xfs_trans_ichgtime() to keep in
sync with userspace. (Currently no kernel caller sends this flag.)
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Userspace now has an identical xfs_trans_inode.c which it has already
moved to libxfs/ so do the same move for kernelspace.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
If the stateid is the zero or invalid stateid, then it is pointless
to attempt to use it for recovery. In that case, try to fall back
to using the open state stateid, or just doing a general recovery
of all state on a given inode.
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
The stuff under sysctl describes /sys interface from userspace
point of view. So, add it to the admin-guide and remove the
:orphan: from its index file.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Improvements and bug fixes for the hmm interface in the kernel:
- Improve clarity, locking and APIs related to the 'hmm mirror' feature
merged last cycle. In linux-next we now see AMDGPU and nouveau to be
using this API.
- Remove old or transitional hmm APIs. These are hold overs from the past
with no users, or APIs that existed only to manage cross tree conflicts.
There are still a few more of these cleanups that didn't make the merge
window cut off.
- Improve some core mm APIs:
* export alloc_pages_vma() for driver use
* refactor into devm_request_free_mem_region() to manage
DEVICE_PRIVATE resource reservations
* refactor duplicative driver code into the core dev_pagemap
struct
- Remove hmm wrappers of improved core mm APIs, instead have drivers use
the simplified API directly
- Remove DEVICE_PUBLIC
- Simplify the kconfig flow for the hmm users and core code
-----BEGIN PGP SIGNATURE-----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=wKvp
-----END PGP SIGNATURE-----
Merge tag 'for-linus-hmm' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull HMM updates from Jason Gunthorpe:
"Improvements and bug fixes for the hmm interface in the kernel:
- Improve clarity, locking and APIs related to the 'hmm mirror'
feature merged last cycle. In linux-next we now see AMDGPU and
nouveau to be using this API.
- Remove old or transitional hmm APIs. These are hold overs from the
past with no users, or APIs that existed only to manage cross tree
conflicts. There are still a few more of these cleanups that didn't
make the merge window cut off.
- Improve some core mm APIs:
- export alloc_pages_vma() for driver use
- refactor into devm_request_free_mem_region() to manage
DEVICE_PRIVATE resource reservations
- refactor duplicative driver code into the core dev_pagemap
struct
- Remove hmm wrappers of improved core mm APIs, instead have drivers
use the simplified API directly
- Remove DEVICE_PUBLIC
- Simplify the kconfig flow for the hmm users and core code"
* tag 'for-linus-hmm' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (42 commits)
mm: don't select MIGRATE_VMA_HELPER from HMM_MIRROR
mm: remove the HMM config option
mm: sort out the DEVICE_PRIVATE Kconfig mess
mm: simplify ZONE_DEVICE page private data
mm: remove hmm_devmem_add
mm: remove hmm_vma_alloc_locked_page
nouveau: use devm_memremap_pages directly
nouveau: use alloc_page_vma directly
PCI/P2PDMA: use the dev_pagemap internal refcount
device-dax: use the dev_pagemap internal refcount
memremap: provide an optional internal refcount in struct dev_pagemap
memremap: replace the altmap_valid field with a PGMAP_ALTMAP_VALID flag
memremap: remove the data field in struct dev_pagemap
memremap: add a migrate_to_ram method to struct dev_pagemap_ops
memremap: lift the devmap_enable manipulation into devm_memremap_pages
memremap: pass a struct dev_pagemap to ->kill and ->cleanup
memremap: move dev_pagemap callbacks into a separate structure
memremap: validate the pagemap type passed to devm_memremap_pages
mm: factor out a devm_request_free_mem_region helper
mm: export alloc_pages_vma
...
- Fix read-only file creation when the eCryptfs mount is configured to
store metadata in xattrs
- Minor code cleanups
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=C+HK
-----END PGP SIGNATURE-----
Merge tag 'ecryptfs-5.3-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs
Pull eCryptfs updates from Tyler Hicks:
- Fix error handling when ecryptfs_read_lower() encounters an error
- Fix read-only file creation when the eCryptfs mount is configured to
store metadata in xattrs
- Minor code cleanups
* tag 'ecryptfs-5.3-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs:
ecryptfs: Change return type of ecryptfs_process_flags
ecryptfs: Make ecryptfs_xattr_handler static
ecryptfs: remove unnessesary null check in ecryptfs_keyring_auth_tok_for_sig
ecryptfs: use print_hex_dump_bytes for hexdump
eCryptfs: fix permission denied with ecryptfs_xattr mount option when create readonly file
ecryptfs: re-order a condition for static checkers
eCryptfs: fix a couple type promotion bugs
- Support for zstd compression
- Support for offline signed filesystems
- Various fixes for regressions
-----BEGIN PGP SIGNATURE-----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=rllw
-----END PGP SIGNATURE-----
Merge tag 'upstream-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs
Pull UBIFS updates from Richard Weinberger:
- Support for zstd compression
- Support for offline signed filesystems
- Various fixes for regressions
* tag 'upstream-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs:
ubifs: Don't leak orphans on memory during commit
ubifs: Check link count of inodes when killing orphans.
ubifs: Add support for zstd compression.
ubifs: support offline signed images
ubifs: remove unnecessary check in ubifs_log_start_commit
ubifs: Fix typo of output in get_cs_sqnum
ubifs: Simplify redundant code
ubifs: Correctly use tnc_next() in search_dh_cookie()
Pull percpu updates from Dennis Zhou:
"This includes changes to let percpu_ref release the backing percpu
memory earlier after it has been switched to atomic in cases where the
percpu ref is not revived.
This will help recycle percpu memory earlier in cases where the
refcounts are pinned for prolonged periods of time"
* 'for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu:
percpu_ref: release percpu memory early without PERCPU_REF_ALLOW_REINIT
md: initialize percpu refcounters using PERCU_REF_ALLOW_REINIT
io_uring: initialize percpu refcounters using PERCU_REF_ALLOW_REINIT
percpu_ref: introduce PERCPU_REF_ALLOW_REINIT flag
-----BEGIN PGP SIGNATURE-----
iQJEBAABCAAuFiEEwPw5LcreJtl1+l5K99NY+ylx4KYFAl0nUl4QHGF4Ym9lQGtl
cm5lbC5kawAKCRD301j7KXHgplCaEACa7c7ybRgV6CZpS9PXXVqBJqYILRLBXsnn
MXomrSdjKMs0Y928RAQHFNWh3HaHHtdvSmFvwOpfF5lyrYXVfc9MQ7brqarDp1t2
f4jvkL63BVG2Zs/VL8QVAz+CwtCF39hduzUR/Y9j/4+rJNhSBMNJLY0nlB5weCTy
MJetnLoQ9ETA2+xu49vAM/PFJgBynNUAyUer918y8QysJRj90/VnhieQmrVb4tpG
Q4yZFKq4YPDs0tLEX4Nj6eJERcyW/4MC2oZ0aPXU4g2Dc3SVWaSNOo5WpkP+crGt
0dbyLmhomteE6+Kaco1hAWIkG/RuvgiMzDizryi0enXP51edV3Vnwyg3MQSUhcnf
Pn7vrDkajKBE9rFGlLy8V4gkKdS8XJQy2xA1MWm3aWgGl4v0j64EXIe0IhIK30vU
25A9jLDcdgr74+Lw+vWLLd+oeGD0iFf6wiEp+3jzEdtfVNE/lD6yilTzbdz2V0UK
8T1sRLMEkaG7CbxOVc1UAfcvObjuqQihEI0fQvl4yxV178h8mtWB87YmV2S2EhzP
v6FSxiC1yZ7J+rwb/Mff7+1GoOgzrpS/zESk2WMTgcwVdiwFfv5eIC26ZNWObJ/x
IY+4xRgTf2dEsjBeumOuBzxTfzrZb+pTO4GCa4O+t0UDQRIwl0y20pTXKtxU3y/U
gKPXEjgXrQ==
=jDiB
-----END PGP SIGNATURE-----
Merge tag 'for-5.3/io_uring-20190711' of git://git.kernel.dk/linux-block
Pull io_uring updates from Jens Axboe:
"This contains:
- Support for recvmsg/sendmsg as first class opcodes.
I don't envision going much further down this path, as there are
plans in progress to support potentially any system call in an
async fashion through io_uring. But I think it does make sense to
have certain core ops available directly, especially those that can
support a "try this non-blocking" flag/mode. (me)
- Handle generic short reads automatically.
This can happen fairly easily if parts of the buffered read is
cached. Since the application needs to issue another request for
the remainder, just do this internally and save kernel/user
roundtrip while providing a nicer more robust API. (me)
- Support for linked SQEs.
This allows SQEs to depend on each other, enabling an application
to eg queue a read-from-this-file,write-to-that-file pair. (me)
- Fix race in stopping SQ thread (Jackie)"
* tag 'for-5.3/io_uring-20190711' of git://git.kernel.dk/linux-block:
io_uring: fix io_sq_thread_stop running in front of io_sq_thread
io_uring: add support for recvmsg()
io_uring: add support for sendmsg()
io_uring: add support for sqe links
io_uring: punt short reads to async context
uio: make import_iovec()/compat_import_iovec() return bytes on success
RHBZ: 1649907
Fix a crash that happens while attempting to mount a DFS referral from the same server on the root of a filesystem.
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
RFC 7530 requires us to refetch the lease time attribute once a new
clientID is established. This is already implemented for the
nfs4.1(+) clients by nfs41_init_clientid, which calls
nfs41_finish_session_reset, which calls nfs4_setup_state_renewal.
To make nfs4_setup_state_renewal available for nfs4.0, move it
further to the top of the source file to include it regardles of
CONFIG_NFS_V4_1 and to save a forward declaration.
Call nfs4_setup_state_renewal from nfs4_init_clientid.
Signed-off-by: Donald Buczek <buczek@molgen.mpg.de>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
The function nfs41_setup_state_renewal is useful to the nfs 4.0 client
as well, so rename the function to nfs4_setup_state_renewal.
Signed-off-by: Donald Buczek <buczek@molgen.mpg.de>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Compile nfs4_proc_get_lease_time, enc_get_lease_time and
dec_get_lease_time for nfs4.0. Use nfs4_sequence_done instead of
nfs41_sequence_done in nfs4_proc_get_lease_time,
Signed-off-by: Donald Buczek <buczek@molgen.mpg.de>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
The debug message of decode_attr_lease_time incorrectly
says "file size". Fix it to "lease time".
Signed-off-by: Donald Buczek <buczek@molgen.mpg.de>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Some strings should be put into a sequence.
Thus use the corresponding function “seq_puts”.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
A single character (line break) should be put into a sequence.
Thus use the corresponding function “seq_putc”.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Now that f2fs_ioc_setflags() and f2fs_ioc_fssetxattr() call the VFS
helper functions which check for permission to change the immutable and
append-only flags, it's no longer needed to do this check in
f2fs_setflags_common() too. So remove it.
This is based on a patch from Darrick Wong, but reworked to apply after
commit 360985573b ("f2fs: separate f2fs i_flags from fs_flags and ext4
i_flags").
Originally-from: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Make the f2fs implementation of FS_IOC_FSSETXATTR use the new VFS helper
function vfs_ioc_fssetxattr_check(), and remove the project quota check
since it's now done by the helper function.
This is based on a patch from Darrick Wong, but reworked to apply after
commit 360985573b ("f2fs: separate f2fs i_flags from fs_flags and ext4
i_flags").
Originally-from: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Make the f2fs implementation of FS_IOC_SETFLAGS use the new VFS helper
function vfs_ioc_setflags_prepare().
This is based on a patch from Darrick Wong, but reworked to apply after
commit 360985573b ("f2fs: separate f2fs i_flags from fs_flags and ext4
i_flags").
Originally-from: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This set removes some unnecessary debugfs error handling, and
checks that lowcomms workqueues are not NULL before destroying.
-----BEGIN PGP SIGNATURE-----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=Mhya
-----END PGP SIGNATURE-----
Merge tag 'dlm-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm
Pull dlm updates from David Teigland:
"This set removes some unnecessary debugfs error handling, and checks
that lowcomms workqueues are not NULL before destroying"
* tag 'dlm-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm:
dlm: no need to check return value of debugfs_create functions
dlm: check if workqueues are NULL before flushing/destroying
In this round, we've introduced native swap file support which can exploit DIO,
enhanced existing checkpoint=disable feature with additional mount option to
tune the triggering condition, and allowed user to preallocate physical blocks
in a pinned file which will be useful to avoid f2fs fragmentation in append-only
workloads. In addition, we've fixed subtle quota corruption issue.
Enhancement:
- add swap file support which uses DIO
- allocate blocks for pinned file
- allow SSR and mount option to enhance checkpoint=disable
- enhance IPU IOs
- add more sanity checks such as memory boundary access
Bug fix:
- quota corruption in very corner case of error-injected SPO case
- fix root_reserved on remount and some wrong counts
- add missing fsck flag
Some patches were also introduced to clean up ambiguous i_flags and debugging
messages codes.
-----BEGIN PGP SIGNATURE-----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=S2ZS
-----END PGP SIGNATURE-----
Merge tag 'f2fs-for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs
Pull f2fs updates from Jaegeuk Kim:
"In this round, we've introduced native swap file support which can
exploit DIO, enhanced existing checkpoint=disable feature with
additional mount option to tune the triggering condition, and allowed
user to preallocate physical blocks in a pinned file which will be
useful to avoid f2fs fragmentation in append-only workloads. In
addition, we've fixed subtle quota corruption issue.
Enhancements:
- add swap file support which uses DIO
- allocate blocks for pinned file
- allow SSR and mount option to enhance checkpoint=disable
- enhance IPU IOs
- add more sanity checks such as memory boundary access
Bug fixes:
- quota corruption in very corner case of error-injected SPO case
- fix root_reserved on remount and some wrong counts
- add missing fsck flag
Some patches were also introduced to clean up ambiguous i_flags and
debugging messages codes"
* tag 'f2fs-for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (33 commits)
f2fs: improve print log in f2fs_sanity_check_ckpt()
f2fs: avoid out-of-range memory access
f2fs: fix to avoid long latency during umount
f2fs: allow all the users to pin a file
f2fs: support swap file w/ DIO
f2fs: allocate blocks for pinned file
f2fs: fix is_idle() check for discard type
f2fs: add a rw_sem to cover quota flag changes
f2fs: set SBI_NEED_FSCK for xattr corruption case
f2fs: use generic EFSBADCRC/EFSCORRUPTED
f2fs: Use DIV_ROUND_UP() instead of open-coding
f2fs: print kernel message if filesystem is inconsistent
f2fs: introduce f2fs_<level> macros to wrap f2fs_printk()
f2fs: avoid get_valid_blocks() for cleanup
f2fs: ioctl for removing a range from F2FS
f2fs: only set project inherit bit for directory
f2fs: separate f2fs i_flags from fs_flags and ext4 i_flags
f2fs: replace ktype default_attrs with default_groups
f2fs: Add option to limit required GC for checkpoint=disable
f2fs: Fix accounting for unusable blocks
...
- Refactor inode geometry calculation into a single structure instead of
open-coding pieces everywhere.
- Add online repair to build options.
- Remove unnecessary function call flags and functions.
- Claim maintainership of various loose xfs documentation and header
files.
- Use struct bio directly for log buffer IOs instead of struct xfs_buf.
- Reduce log item boilerplate code requirements.
- Merge log item code spread across too many files.
- Further distinguish between log item commits and cancellations.
- Various small cleanups to the ag small allocator.
- Support cgroup-aware writeback
- libxfs refactoring for mkfs cleanup
- Remove unneeded #includes
- Fix a memory allocation miscalculation in the new log bio code
- Fix bisection problems
- Fix a crash in ioend processing caused by tripping over freeing of
preallocated transactions
- Split out a generic inode walk mechanism from the bulkstat code, hook
up all the internal users to use the walking code, then clean up
bulkstat to serve only the bulkstat ioctls.
- Add a multithreaded iwalk implementation to speed up quotacheck on
fast storage with many CPUs.
- Remove unnecessary return values in logging teardown functions.
- Supplement the bstat and inogrp structures with new bulkstat and
inumbers structures that have all the fields we need for v5
filesystem features and none of the padding problems of their
predecessors.
- Wire up new ioctls that use the new structures with a much simpler
bulk_ireq structure at the head instead of the pointerhappy mess we
had before.
- Enable userspace to constrain bulkstat returns to a single AG or a
single special inode so that we can phase out a lot of geometry
guesswork in userspace.
- Reduce memory consumption and zeroing overhead in extended attribute
scrub code.
- Fix some behavioral regressions in the new bulkstat backend code.
- Fix some behavioral regressions in the new log bio code.
-----BEGIN PGP SIGNATURE-----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=VEdn
-----END PGP SIGNATURE-----
Merge tag 'xfs-5.3-merge-12' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs updates from Darrick Wong:
"In this release there are a significant amounts of consolidations and
cleanups in the log code; restructuring of the log to issue struct
bios directly; new bulkstat ioctls to return v5 fs inode information
(and fix all the padding problems of the old ioctl); the beginnings of
multithreaded inode walks (e.g. quotacheck); and a reduction in memory
usage in the online scrub code leading to reduced runtimes.
- Refactor inode geometry calculation into a single structure instead
of open-coding pieces everywhere.
- Add online repair to build options.
- Remove unnecessary function call flags and functions.
- Claim maintainership of various loose xfs documentation and header
files.
- Use struct bio directly for log buffer IOs instead of struct
xfs_buf.
- Reduce log item boilerplate code requirements.
- Merge log item code spread across too many files.
- Further distinguish between log item commits and cancellations.
- Various small cleanups to the ag small allocator.
- Support cgroup-aware writeback
- libxfs refactoring for mkfs cleanup
- Remove unneeded #includes
- Fix a memory allocation miscalculation in the new log bio code
- Fix bisection problems
- Fix a crash in ioend processing caused by tripping over freeing of
preallocated transactions
- Split out a generic inode walk mechanism from the bulkstat code,
hook up all the internal users to use the walking code, then clean
up bulkstat to serve only the bulkstat ioctls.
- Add a multithreaded iwalk implementation to speed up quotacheck on
fast storage with many CPUs.
- Remove unnecessary return values in logging teardown functions.
- Supplement the bstat and inogrp structures with new bulkstat and
inumbers structures that have all the fields we need for v5
filesystem features and none of the padding problems of their
predecessors.
- Wire up new ioctls that use the new structures with a much simpler
bulk_ireq structure at the head instead of the pointerhappy mess we
had before.
- Enable userspace to constrain bulkstat returns to a single AG or a
single special inode so that we can phase out a lot of geometry
guesswork in userspace.
- Reduce memory consumption and zeroing overhead in extended
attribute scrub code.
- Fix some behavioral regressions in the new bulkstat backend code.
- Fix some behavioral regressions in the new log bio code"
* tag 'xfs-5.3-merge-12' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: (100 commits)
xfs: chain bios the right way around in xfs_rw_bdev
xfs: bump INUMBERS cursor correctly in xfs_inumbers_walk
xfs: don't update lastino for FSBULKSTAT_SINGLE
xfs: online scrub needn't bother zeroing its temporary buffer
xfs: only allocate memory for scrubbing attributes when we need it
xfs: refactor attr scrub memory allocation function
xfs: refactor extended attribute buffer pointer functions
xfs: attribute scrub should use seen_enough to pass error values
xfs: allow single bulkstat of special inodes
xfs: specify AG in bulk req
xfs: wire up the v5 inumbers ioctl
xfs: wire up new v5 bulkstat ioctls
xfs: introduce v5 inode group structure
xfs: introduce new v5 bulkstat structure
xfs: rename bulkstat functions
xfs: remove various bulk request typedef usage
fs: xfs: xfs_log: Change return type from int to void
xfs: poll waiting for quotacheck
xfs: multithreaded iwalk implementation
xfs: refactor INUMBERS to use iwalk functions
...
- Standardize parameter checking for the SETFLAGS and FSSETXATTR ioctls
(which were the file attribute setters for ext4 and xfs and have now
been hoisted to the vfs)
- Only allow the DAX flag to be set on files and directories.
-----BEGIN PGP SIGNATURE-----
iQIzBAABCgAdFiEEUzaAxoMeQq6m2jMV+H93GTRKtOsFAl0aJgMACgkQ+H93GTRK
tOuKkg//SJaxcB63uVPZk9hDraYTmyo9OXRRX6X9WwDKPTWwa88CUwS1ny1QF7Mt
zMkgzG2/y2Rs9PQ0ARoPbh1hNb2CXnvA+xnzUEev1MW6UN/nTFMZEOPn2ZQ+DxQE
gg/0U56kKgtjtXzBZVpTgHzSETivdXwHxFW3hiTtyRXg+4ulgDIZLOjN2wRB+Pdb
X8ZmM6MqKOTbhQEXlw13TlCKBzoMjC1w4UU4rkZPjoSjAaUWiPfrk/XU7qgguf9p
v1dbSN2dADQ19jzZ1dmggXnlJsRMZjk/ls5rxJlB5DHDbh6YgnA2TE+tYrtH28eB
uyKfD+RQnMzRVdmH8PsMQRQQFXR2UYyprVP7a6wi6TkB+gytn7sR5uT4sbAhmhcF
TiTYfYNRXzemHCewyOwOsUE/7oCeiJcdbqiPAHHD/jYLZfRjSXDcGzz3+7ZYZ3GO
hRxUhpxHPbkmK4T2OxhzReCbRsLN/0BeEcDdLkNWmi2FTh3V1gYzMGkgI9wsVbsd
pHjoGIHbMPWqktF/obuGq96WVfYBBaWJ6WNzQqKT4dQYAJBW2omxitXQHLpi6cjt
hG5ncxa3cPpWx4t3Lx2hb0TPS7RyYvuoQIcS/Me2RWioxrwWrgnOqdHFfLEwWpfN
jRowdWiGgOIsq8hMt7qycmGCXzbgsbaA/7oRqh8TiwM9taPOM4c=
=uH2E
-----END PGP SIGNATURE-----
Merge tag 'vfs-fix-ioctl-checking-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull common SETFLAGS/FSSETXATTR parameter checking from Darrick Wong:
"Here's a patch series that sets up common parameter checking functions
for the FS_IOC_SETFLAGS and FS_IOC_FSSETXATTR ioctl implementations.
The goal here is to reduce the amount of behaviorial variance between
the filesystems where those ioctls originated (ext2 and XFS,
respectively) and everybody else.
- Standardize parameter checking for the SETFLAGS and FSSETXATTR
ioctls (which were the file attribute setters for ext4 and xfs and
have now been hoisted to the vfs)
- Only allow the DAX flag to be set on files and directories"
* tag 'vfs-fix-ioctl-checking-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
vfs: only allow FSSETXATTR to set DAX flag on files and dirs
vfs: teach vfs_ioc_fssetxattr_check to check extent size hints
vfs: teach vfs_ioc_fssetxattr_check to check project id info
vfs: create a generic checking function for FS_IOC_FSSETXATTR
vfs: create a generic checking and prep function for FS_IOC_SETFLAGS
This reverts commit be4c2d4723.
That commit caused a severe memory leak in nfs_readdir_make_qstr().
When listing a directory with more than 100 files (this is how many
struct nfs_cache_array_entry elements fit in one 4kB page), all
allocated file name strings past those 100 leak.
The root of the leakage is that those string pointers are managed in
pages which are never linked into the page cache.
fs/nfs/dir.c puts pages into the page cache by calling
read_cache_page(); the callback function nfs_readdir_filler() will
then fill the given page struct which was passed to it, which is
already linked in the page cache (by do_read_cache_page() calling
add_to_page_cache_lru()).
Commit be4c2d4723 added another (local) array of allocated pages, to
be filled with more data, instead of discarding excess items received
from the NFS server. Those additional pages can be used by the next
nfs_readdir_filler() call (from within the same nfs_readdir() call).
The leak happens when some of those additional pages are never used
(copied to the page cache using copy_highpage()). The pages will be
freed by nfs_readdir_free_pages(), but their contents will not. The
commit did not invoke nfs_readdir_clear_array() (and doing so would
have been dangerous, because it did not track which of those pages
were already copied to the page cache, risking double free bugs).
How to reproduce the leak:
- Use a kernel with CONFIG_SLUB_DEBUG_ON.
- Create a directory on a NFS mount with more than 100 files with
names long enough to use the "kmalloc-32" slab (so we can easily
look up the allocation counts):
for i in `seq 110`; do touch ${i}_0123456789abcdef; done
- Drop all caches:
echo 3 >/proc/sys/vm/drop_caches
- Check the allocation counter:
grep nfs_readdir /sys/kernel/slab/kmalloc-32/alloc_calls
30564391 nfs_readdir_add_to_array+0x73/0xd0 age=534558/4791307/6540952 pid=370-1048386 cpus=0-47 nodes=0-1
- Request a directory listing and check the allocation counters again:
ls
[...]
grep nfs_readdir /sys/kernel/slab/kmalloc-32/alloc_calls
30564511 nfs_readdir_add_to_array+0x73/0xd0 age=207/4792999/6542663 pid=370-1048386 cpus=0-47 nodes=0-1
There are now 120 new allocations.
- Drop all caches and check the counters again:
echo 3 >/proc/sys/vm/drop_caches
grep nfs_readdir /sys/kernel/slab/kmalloc-32/alloc_calls
30564401 nfs_readdir_add_to_array+0x73/0xd0 age=735/4793524/6543176 pid=370-1048386 cpus=0-47 nodes=0-1
110 allocations are gone, but 10 have leaked and will never be freed.
Unhelpfully, those allocations are explicitly excluded from KMEMLEAK,
that's why my initial attempts with KMEMLEAK were not successful:
/*
* Avoid a kmemleak false positive. The pointer to the name is stored
* in a page cache page which kmemleak does not scan.
*/
kmemleak_not_leak(string->name);
It would be possible to solve this bug without reverting the whole
commit:
- keep track of which pages were not used, and call
nfs_readdir_clear_array() on them, or
- manually link those pages into the page cache
But for now I have decided to just revert the commit, because the real
fix would require complex considerations, risking more dangerous
(crash) bugs, which may seem unsuitable for the stable branches.
Signed-off-by: Max Kellermann <mk@cm4all.com>
Cc: stable@vger.kernel.org # v5.1+
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Here is the "big" driver core and debugfs changes for 5.3-rc1
It's a lot of different patches, all across the tree due to some api
changes and lots of debugfs cleanups. Because of this, there is going
to be some merge issues with your tree at the moment, I'll follow up
with the expected resolutions to make it easier for you.
Other than the debugfs cleanups, in this set of changes we have:
- bus iteration function cleanups (will cause build warnings
with s390 and coresight drivers in your tree)
- scripts/get_abi.pl tool to display and parse Documentation/ABI
entries in a simple way
- cleanups to Documenatation/ABI/ entries to make them parse
easier due to typos and other minor things
- default_attrs use for some ktype users
- driver model documentation file conversions to .rst
- compressed firmware file loading
- deferred probe fixes
All of these have been in linux-next for a while, with a bunch of merge
issues that Stephen has been patient with me for. Other than the merge
issues, functionality is working properly in linux-next :)
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----
iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCXSgpnQ8cZ3JlZ0Brcm9h
aC5jb20ACgkQMUfUDdst+ykcwgCfS30OR4JmwZydWGJ7zK/cHqk+KjsAnjOxjC1K
LpRyb3zX29oChFaZkc5a
=XrEZ
-----END PGP SIGNATURE-----
Merge tag 'driver-core-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core and debugfs updates from Greg KH:
"Here is the "big" driver core and debugfs changes for 5.3-rc1
It's a lot of different patches, all across the tree due to some api
changes and lots of debugfs cleanups.
Other than the debugfs cleanups, in this set of changes we have:
- bus iteration function cleanups
- scripts/get_abi.pl tool to display and parse Documentation/ABI
entries in a simple way
- cleanups to Documenatation/ABI/ entries to make them parse easier
due to typos and other minor things
- default_attrs use for some ktype users
- driver model documentation file conversions to .rst
- compressed firmware file loading
- deferred probe fixes
All of these have been in linux-next for a while, with a bunch of
merge issues that Stephen has been patient with me for"
* tag 'driver-core-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (102 commits)
debugfs: make error message a bit more verbose
orangefs: fix build warning from debugfs cleanup patch
ubifs: fix build warning after debugfs cleanup patch
driver: core: Allow subsystems to continue deferring probe
drivers: base: cacheinfo: Ensure cpu hotplug work is done before Intel RDT
arch_topology: Remove error messages on out-of-memory conditions
lib: notifier-error-inject: no need to check return value of debugfs_create functions
swiotlb: no need to check return value of debugfs_create functions
ceph: no need to check return value of debugfs_create functions
sunrpc: no need to check return value of debugfs_create functions
ubifs: no need to check return value of debugfs_create functions
orangefs: no need to check return value of debugfs_create functions
nfsd: no need to check return value of debugfs_create functions
lib: 842: no need to check return value of debugfs_create functions
debugfs: provide pr_fmt() macro
debugfs: log errors when something goes wrong
drivers: s390/cio: Fix compilation warning about const qualifiers
drivers: Add generic helper to match by of_node
driver_find_device: Unify the match function with class_find_device()
bus_find_device: Unify the match callback with class_find_device
...
Merge updates from Andrew Morton:
"Am experimenting with splitting MM up into identifiable subsystems
perhaps with a view to gitifying it in complex ways. Also with more
verbose "incoming" emails.
Most of MM is here and a few other trees.
Subsystems affected by this patch series:
- hotfixes
- iommu
- scripts
- arch/sh
- ocfs2
- mm:slab-generic
- mm:slub
- mm:kmemleak
- mm:kasan
- mm:cleanups
- mm:debug
- mm:pagecache
- mm:swap
- mm:memcg
- mm:gup
- mm:pagemap
- mm:infrastructure
- mm:vmalloc
- mm:initialization
- mm:pagealloc
- mm:vmscan
- mm:tools
- mm:proc
- mm:ras
- mm:oom-kill
hotfixes:
mm: vmscan: scan anonymous pages on file refaults
mm/nvdimm: add is_ioremap_addr and use that to check ioremap address
mm/memcontrol: fix wrong statistics in memory.stat
mm/z3fold.c: lock z3fold page before __SetPageMovable()
nilfs2: do not use unexported cpu_to_le32()/le32_to_cpu() in uapi header
MAINTAINERS: nilfs2: update email address
iommu:
include/linux/dmar.h: replace single-char identifiers in macros
scripts:
scripts/decode_stacktrace: match basepath using shell prefix operator, not regex
scripts/decode_stacktrace: look for modules with .ko.debug extension
scripts/spelling.txt: drop "sepc" from the misspelling list
scripts/spelling.txt: add spelling fix for prohibited
scripts/decode_stacktrace: Accept dash/underscore in modules
scripts/spelling.txt: add more spellings to spelling.txt
arch/sh:
arch/sh/configs/sdk7786_defconfig: remove CONFIG_LOGFS
sh: config: remove left-over BACKLIGHT_LCD_SUPPORT
sh: prevent warnings when using iounmap
ocfs2:
fs: ocfs: fix spelling mistake "hearbeating" -> "heartbeat"
ocfs2/dlm: use struct_size() helper
ocfs2: add last unlock times in locking_state
ocfs2: add locking filter debugfs file
ocfs2: add first lock wait time in locking_state
ocfs: no need to check return value of debugfs_create functions
fs/ocfs2/dlmglue.c: unneeded variable: "status"
ocfs2: use kmemdup rather than duplicating its implementation
mm:slab-generic:
Patch series "mm/slab: Improved sanity checking":
mm/slab: validate cache membership under freelist hardening
mm/slab: sanity-check page type when looking up cache
lkdtm/heap: add tests for freelist hardening
mm:slub:
mm/slub.c: avoid double string traverse in kmem_cache_flags()
slub: don't panic for memcg kmem cache creation failure
mm:kmemleak:
mm/kmemleak.c: fix check for softirq context
mm/kmemleak.c: change error at _write when kmemleak is disabled
docs: kmemleak: add more documentation details
mm:kasan:
mm/kasan: print frame description for stack bugs
Patch series "Bitops instrumentation for KASAN", v5:
lib/test_kasan: add bitops tests
x86: use static_cpu_has in uaccess region to avoid instrumentation
asm-generic, x86: add bitops instrumentation for KASAN
Patch series "mm/kasan: Add object validation in ksize()", v3:
mm/kasan: introduce __kasan_check_{read,write}
mm/kasan: change kasan_check_{read,write} to return boolean
lib/test_kasan: Add test for double-kzfree detection
mm/slab: refactor common ksize KASAN logic into slab_common.c
mm/kasan: add object validation in ksize()
mm:cleanups:
include/linux/pfn_t.h: remove pfn_t_to_virt()
Patch series "remove ARCH_SELECT_MEMORY_MODEL where it has no effect":
arm: remove ARCH_SELECT_MEMORY_MODEL
s390: remove ARCH_SELECT_MEMORY_MODEL
sparc: remove ARCH_SELECT_MEMORY_MODEL
mm/gup.c: make follow_page_mask() static
mm/memory.c: trivial clean up in insert_page()
mm: make !CONFIG_HUGE_PAGE wrappers into static inlines
include/linux/mm_types.h: ifdef struct vm_area_struct::swap_readahead_info
mm: remove the account_page_dirtied export
mm/page_isolation.c: change the prototype of undo_isolate_page_range()
include/linux/vmpressure.h: use spinlock_t instead of struct spinlock
mm: remove the exporting of totalram_pages
include/linux/pagemap.h: document trylock_page() return value
mm:debug:
mm/failslab.c: by default, do not fail allocations with direct reclaim only
Patch series "debug_pagealloc improvements":
mm, debug_pagelloc: use static keys to enable debugging
mm, page_alloc: more extensive free page checking with debug_pagealloc
mm, debug_pagealloc: use a page type instead of page_ext flag
mm:pagecache:
Patch series "fix filler_t callback type mismatches", v2:
mm/filemap.c: fix an overly long line in read_cache_page
mm/filemap: don't cast ->readpage to filler_t for do_read_cache_page
jffs2: pass the correct prototype to read_cache_page
9p: pass the correct prototype to read_cache_page
mm/filemap.c: correct the comment about VM_FAULT_RETRY
mm:swap:
mm, swap: fix race between swapoff and some swap operations
mm/swap_state.c: simplify total_swapcache_pages() with get_swap_device()
mm, swap: use rbtree for swap_extent
mm/mincore.c: fix race between swapoff and mincore
mm:memcg:
memcg, oom: no oom-kill for __GFP_RETRY_MAYFAIL
memcg, fsnotify: no oom-kill for remote memcg charging
mm, memcg: introduce memory.events.local
mm: memcontrol: dump memory.stat during cgroup OOM
Patch series "mm: reparent slab memory on cgroup removal", v7:
mm: memcg/slab: postpone kmem_cache memcg pointer initialization to memcg_link_cache()
mm: memcg/slab: rename slab delayed deactivation functions and fields
mm: memcg/slab: generalize postponed non-root kmem_cache deactivation
mm: memcg/slab: introduce __memcg_kmem_uncharge_memcg()
mm: memcg/slab: unify SLAB and SLUB page accounting
mm: memcg/slab: don't check the dying flag on kmem_cache creation
mm: memcg/slab: synchronize access to kmem_cache dying flag using a spinlock
mm: memcg/slab: rework non-root kmem_cache lifecycle management
mm: memcg/slab: stop setting page->mem_cgroup pointer for slab pages
mm: memcg/slab: reparent memcg kmem_caches on cgroup removal
mm, memcg: add a memcg_slabinfo debugfs file
mm:gup:
Patch series "switch the remaining architectures to use generic GUP", v4:
mm: use untagged_addr() for get_user_pages_fast addresses
mm: simplify gup_fast_permitted
mm: lift the x86_32 PAE version of gup_get_pte to common code
MIPS: use the generic get_user_pages_fast code
sh: add the missing pud_page definition
sh: use the generic get_user_pages_fast code
sparc64: add the missing pgd_page definition
sparc64: define untagged_addr()
sparc64: use the generic get_user_pages_fast code
mm: rename CONFIG_HAVE_GENERIC_GUP to CONFIG_HAVE_FAST_GUP
mm: reorder code blocks in gup.c
mm: consolidate the get_user_pages* implementations
mm: validate get_user_pages_fast flags
mm: move the powerpc hugepd code to mm/gup.c
mm: switch gup_hugepte to use try_get_compound_head
mm: mark the page referenced in gup_hugepte
mm/gup: speed up check_and_migrate_cma_pages() on huge page
mm/gup.c: remove some BUG_ONs from get_gate_page()
mm/gup.c: mark undo_dev_pagemap as __maybe_unused
mm:pagemap:
asm-generic, x86: introduce generic pte_{alloc,free}_one[_kernel]
alpha: switch to generic version of pte allocation
arm: switch to generic version of pte allocation
arm64: switch to generic version of pte allocation
csky: switch to generic version of pte allocation
m68k: sun3: switch to generic version of pte allocation
mips: switch to generic version of pte allocation
nds32: switch to generic version of pte allocation
nios2: switch to generic version of pte allocation
parisc: switch to generic version of pte allocation
riscv: switch to generic version of pte allocation
um: switch to generic version of pte allocation
unicore32: switch to generic version of pte allocation
mm/pgtable: drop pgtable_t variable from pte_fn_t functions
mm/memory.c: fail when offset == num in first check of __vm_map_pages()
mm:infrastructure:
mm/mmu_notifier: use hlist_add_head_rcu()
mm:vmalloc:
Patch series "Some cleanups for the KVA/vmalloc", v5:
mm/vmalloc.c: remove "node" argument
mm/vmalloc.c: preload a CPU with one object for split purpose
mm/vmalloc.c: get rid of one single unlink_va() when merge
mm/vmalloc.c: switch to WARN_ON() and move it under unlink_va()
mm/vmalloc.c: spelling> s/informaion/information/
mm:initialization:
mm/large system hash: use vmalloc for size > MAX_ORDER when !hashdist
mm/large system hash: clear hashdist when only one node with memory is booted
mm:pagealloc:
arm64: move jump_label_init() before parse_early_param()
Patch series "add init_on_alloc/init_on_free boot options", v10:
mm: security: introduce init_on_alloc=1 and init_on_free=1 boot options
mm: init: report memory auto-initialization features at boot time
mm:vmscan:
mm: vmscan: remove double slab pressure by inc'ing sc->nr_scanned
mm: vmscan: correct some vmscan counters for THP swapout
mm:tools:
tools/vm/slabinfo: order command line options
tools/vm/slabinfo: add partial slab listing to -X
tools/vm/slabinfo: add option to sort by partial slabs
tools/vm/slabinfo: add sorting info to help menu
mm:proc:
proc: use down_read_killable mmap_sem for /proc/pid/maps
proc: use down_read_killable mmap_sem for /proc/pid/smaps_rollup
proc: use down_read_killable mmap_sem for /proc/pid/pagemap
proc: use down_read_killable mmap_sem for /proc/pid/clear_refs
proc: use down_read_killable mmap_sem for /proc/pid/map_files
mm: use down_read_killable for locking mmap_sem in access_remote_vm
mm: smaps: split PSS into components
mm: vmalloc: show number of vmalloc pages in /proc/meminfo
mm:ras:
mm/memory-failure.c: clarify error message
mm:oom-kill:
mm: memcontrol: use CSS_TASK_ITER_PROCS at mem_cgroup_scan_tasks()
mm, oom: refactor dump_tasks for memcg OOMs
mm, oom: remove redundant task_in_mem_cgroup() check
oom: decouple mems_allowed from oom_unkillable_task
mm/oom_kill.c: remove redundant OOM score normalization in select_bad_process()"
* akpm: (147 commits)
mm/oom_kill.c: remove redundant OOM score normalization in select_bad_process()
oom: decouple mems_allowed from oom_unkillable_task
mm, oom: remove redundant task_in_mem_cgroup() check
mm, oom: refactor dump_tasks for memcg OOMs
mm: memcontrol: use CSS_TASK_ITER_PROCS at mem_cgroup_scan_tasks()
mm/memory-failure.c: clarify error message
mm: vmalloc: show number of vmalloc pages in /proc/meminfo
mm: smaps: split PSS into components
mm: use down_read_killable for locking mmap_sem in access_remote_vm
proc: use down_read_killable mmap_sem for /proc/pid/map_files
proc: use down_read_killable mmap_sem for /proc/pid/clear_refs
proc: use down_read_killable mmap_sem for /proc/pid/pagemap
proc: use down_read_killable mmap_sem for /proc/pid/smaps_rollup
proc: use down_read_killable mmap_sem for /proc/pid/maps
tools/vm/slabinfo: add sorting info to help menu
tools/vm/slabinfo: add option to sort by partial slabs
tools/vm/slabinfo: add partial slab listing to -X
tools/vm/slabinfo: order command line options
mm: vmscan: correct some vmscan counters for THP swapout
mm: vmscan: remove double slab pressure by inc'ing sc->nr_scanned
...
oom_unkillable_task() can be called from three different contexts i.e.
global OOM, memcg OOM and oom_score procfs interface. At the moment
oom_unkillable_task() does a task_in_mem_cgroup() check on the given
process. Since there is no reason to perform task_in_mem_cgroup()
check for global OOM and oom_score procfs interface, those contexts
provide NULL memcg and skips the task_in_mem_cgroup() check. However
for memcg OOM context, the oom_unkillable_task() is always called from
mem_cgroup_scan_tasks() and thus task_in_mem_cgroup() check becomes
redundant and effectively dead code. So, just remove the
task_in_mem_cgroup() check altogether.
Link: http://lkml.kernel.org/r/20190624212631.87212-2-shakeelb@google.com
Signed-off-by: Shakeel Butt <shakeelb@google.com>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Acked-by: Roman Gushchin <guro@fb.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Nick Piggin <npiggin@suse.de>
Cc: Paul Jackson <pj@sgi.com>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Vmalloc() is getting more and more used these days (kernel stacks, bpf and
percpu allocator are new top users), and the total % of memory consumed by
vmalloc() can be pretty significant and changes dynamically.
/proc/meminfo is the best place to display this information: its top goal
is to show top consumers of the memory.
Since the VmallocUsed field in /proc/meminfo is not in use for quite a
long time (it has been defined to 0 by a5ad88ce8c ("mm: get rid of
'vmalloc_info' from /proc/meminfo")), let's reuse it for showing the
actual physical memory consumption of vmalloc().
Link: http://lkml.kernel.org/r/20190417194002.12369-3-guro@fb.com
Signed-off-by: Roman Gushchin <guro@fb.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Report separate components (anon, file, and shmem) for PSS in
smaps_rollup.
This helps understand and tune the memory manager behavior in consumer
devices, particularly mobile devices. Many of them (e.g. chromebooks and
Android-based devices) use zram for anon memory, and perform disk reads
for discarded file pages. The difference in latency is large (e.g.
reading a single page from SSD is 30 times slower than decompressing a
zram page on one popular device), thus it is useful to know how much of
the PSS is anon vs. file.
All the information is already present in /proc/pid/smaps, but much more
expensive to obtain because of the large size of that procfs entry.
This patch also removes a small code duplication in smaps_account, which
would have gotten worse otherwise.
Also updated Documentation/filesystems/proc.txt (the smaps section was a
bit stale, and I added a smaps_rollup section) and
Documentation/ABI/testing/procfs-smaps_rollup.
[semenzato@chromium.org: v5]
Link: http://lkml.kernel.org/r/20190626234333.44608-1-semenzato@chromium.org
Link: http://lkml.kernel.org/r/20190626180429.174569-1-semenzato@chromium.org
Signed-off-by: Luigi Semenzato <semenzato@chromium.org>
Acked-by: Yu Zhao <yuzhao@chromium.org>
Cc: Sonny Rao <sonnyrao@chromium.org>
Cc: Yu Zhao <yuzhao@chromium.org>
Cc: Brian Geffon <bgeffon@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Do not remain stuck forever if something goes wrong. Using a killable
lock permits cleanup of stuck tasks and simplifies investigation.
It seems ->d_revalidate() could return any error (except ECHILD) to abort
validation and pass error as result of lookup sequence.
[akpm@linux-foundation.org: fix proc_map_files_lookup() return value, per Andrei]
Link: http://lkml.kernel.org/r/156007493995.3335.9595044802115356911.stgit@buzz
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Reviewed-by: Roman Gushchin <guro@fb.com>
Reviewed-by: Cyrill Gorcunov <gorcunov@gmail.com>
Reviewed-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Michal Koutný <mkoutny@suse.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Do not remain stuck forever if something goes wrong. Using a killable
lock permits cleanup of stuck tasks and simplifies investigation.
Replace the only unkillable mmap_sem lock in clear_refs_write().
Link: http://lkml.kernel.org/r/156007493826.3335.5424884725467456239.stgit@buzz
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Reviewed-by: Roman Gushchin <guro@fb.com>
Reviewed-by: Cyrill Gorcunov <gorcunov@gmail.com>
Reviewed-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Michal Koutný <mkoutny@suse.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Do not remain stuck forever if something goes wrong. Using a killable
lock permits cleanup of stuck tasks and simplifies investigation.
This function is also used for /proc/pid/smaps.
Link: http://lkml.kernel.org/r/156007493160.3335.14447544314127417266.stgit@buzz
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Reviewed-by: Roman Gushchin <guro@fb.com>
Reviewed-by: Cyrill Gorcunov <gorcunov@gmail.com>
Reviewed-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Michal Koutný <mkoutny@suse.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit d46eb14b73 ("fs: fsnotify: account fsnotify metadata to
kmemcg") added remote memcg charging for fanotify and inotify event
objects. The aim was to charge the memory to the listener who is
interested in the events but without triggering the OOM killer.
Otherwise there would be security concerns for the listener.
At the time, oom-kill trigger was not in the charging path. A parallel
work added the oom-kill back to charging path i.e. commit 29ef680ae7
("memcg, oom: move out_of_memory back to the charge path"). So to not
trigger oom-killer in the remote memcg, explicitly add
__GFP_RETRY_MAYFAIL to the fanotigy and inotify event allocations.
Link: http://lkml.kernel.org/r/20190514212259.156585-2-shakeelb@google.com
Signed-off-by: Shakeel Butt <shakeelb@google.com>
Reviewed-by: Roman Gushchin <guro@fb.com>
Acked-by: Jan Kara <jack@suse.cz>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fix the callback 9p passes to read_cache_page to actually have the
proper type expected. Casting around function pointers can easily
hide typing bugs, and defeats control flow protection.
Link: http://lkml.kernel.org/r/20190520055731.24538-5-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Kees Cook <keescook@chromium.org>
Cc: Sami Tolvanen <samitolvanen@google.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fix the callback jffs2 passes to read_cache_page to actually have the
proper type expected. Casting around function pointers can easily hide
typing bugs, and defeats control flow protection.
Link: http://lkml.kernel.org/r/20190520055731.24538-4-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Kees Cook <keescook@chromium.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Sami Tolvanen <samitolvanen@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
kmemdup is introduced to duplicate a region of memory in a neat way.
Rather than kmalloc/kzalloc + memcpy, which the programmer needs to
write the size twice (sometimes lead to mistakes), kmemdup improves
readability, leads to smaller code and also reduce the chances of
mistakes.
Suggestion to use kmemdup rather than using kmalloc/kzalloc + memcpy.
[akpm@linux-foundation.org: coding style fixes]
Link: http://lkml.kernel.org/r/20190703163147.881-1-huangfq.daxian@gmail.com
Signed-off-by: Fuqian Huang <huangfq.daxian@gmail.com>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
fix below issue reported by coccicheck
fs/ocfs2/dlmglue.c:4410:5-11: Unneeded variable: "status". Return "0" on line 4428
We can not change return type of ocfs2_downconvert_thread as its
registered as callback of kthread_create.
Link: http://lkml.kernel.org/r/20190702183237.GA13975@hari-Inspiron-1545
Signed-off-by: Hariprasad Kelam <hariprasad.kelam@gmail.com>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
When calling debugfs functions, there is no need to ever check the
return value. The function can work or not, but the code logic should
never do something different based on this.
Also, because there is no need to save the file dentry, remove all of
the variables that were being saved, and just recursively delete the
whole directory when shutting down, saving a lot of logic and local
variables.
[gregkh@linuxfoundation.org: v2]
Link: http://lkml.kernel.org/r/20190613055455.GE19717@kroah.com
Link: http://lkml.kernel.org/r/20190612152912.GA19151@kroah.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Jia Guo <guojia12@huawei.com>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
ocfs2 file system uses locking_state file under debugfs to dump each
ocfs2 file system's dlm lock resources, but the users ever encountered
some hang(deadlock) problems in ocfs2 file system. I'd like to add
first lock wait time in locking_state file, which can help the upper
scripts detect these deadlock problems via comparing the first lock wait
time with the current time.
Link: http://lkml.kernel.org/r/20190611015414.27754-3-ghe@suse.com
Signed-off-by: Gang He <ghe@suse.com>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Add locking filter debugfs file, which is used to filter lock resources
dump from locking_state debugfs file. We use d_filter_secs field to
filter lock resources dump, the default d_filter_secs(0) value filters
nothing, otherwise, only dump the last N seconds active lock resources.
This enhancement can avoid dumping lots of old records. The
d_filter_secs value can be changed via locking_filter file.
[akpm@linux-foundation.org: fix undefined reference to `__udivdi3']
Link: http://lkml.kernel.org/r/20190611015414.27754-2-ghe@suse.com
Signed-off-by: Gang He <ghe@suse.com>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org> [build-tested]
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
ocfs2 file system uses locking_state file under debugfs to dump each
ocfs2 file system's dlm lock resources, but the dlm lock resources in
memory are becoming more and more after the files were touched by the
user. it will become a bit difficult to analyze these dlm lock resource
records in locking_state file by the upper scripts, though some files
are not active for now, which were accessed long time ago.
Then, I'd like to add last pr/ex unlock times in locking_state file for
each dlm lock resource record, the the upper scripts can use last unlock
time to filter inactive dlm lock resource record.
Link: http://lkml.kernel.org/r/20190611015414.27754-1-ghe@suse.com
Signed-off-by: Gang He <ghe@suse.com>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
One of the more common cases of allocation size calculations is finding
the size of a structure that has a zero-sized array at the end, along
with memory for some number of elements for that array. For example:
struct dlm_migratable_lockres
{
...
struct dlm_migratable_lock ml[0]; // 16 bytes each, begins at byte 112
};
Make use of the struct_size() helper instead of an open-coded version in
order to avoid any potential type mistakes.
So, replace the following form:
sizeof(struct dlm_migratable_lockres) + (mres->num_locks * sizeof(struct dlm_migratable_lock))
with:
struct_size(mres, ml, mres->num_locks)
Notice that, in this case, variable sz is not necessary, hence it is
removed.
This code was detected with the help of Coccinelle.
Link: http://lkml.kernel.org/r/20190605204926.GA24467@embeddedor
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
There are some spelling mistakes in ocfs, fix it.
Link: http://lkml.kernel.org/r/1558964623-106628-1-git-send-email-cg.chen@huawei.com
Signed-off-by: ChenGang <cg.chen@huawei.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Joseph Qi <jiangqi903@gmail.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
NFSoRDMA client updates for 5.3
New features:
- Add a way to place MRs back on the free list
- Reduce context switching
- Add new trace events
Bugfixes and cleanups:
- Fix a BUG when tracing is enabled with NFSv4.1
- Fix a use-after-free in rpcrdma_post_recvs
- Replace use of xdr_stream_pos in rpcrdma_marshal_req
- Fix occasional transport deadlock
- Fix show_nfs_errors macros, other tracing improvements
- Remove RPCRDMA_REQ_F_PENDING and fr_state
- Various simplifications and refactors
Only GFP_KERNEL and GFP_NOIO are used with blkdev_report_zones(). In
preparation of using vmalloc() for large report buffer and zone array
allocations used by this function, remove its "gfp_t gfp_mask" argument
and rely on the caller context to use memalloc_noio_save/restore() where
necessary (block layer zone revalidation and dm-zoned I/O error path).
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Here is the "large" pull request for char and misc and other assorted
smaller driver subsystems for 5.3-rc1.
It seems that this tree is becoming the funnel point of lots of smaller
driver subsystems, which is fine for me, but that's why it is getting
larger over time and does not just contain stuff under drivers/char/ and
drivers/misc.
Lots of small updates all over the place here from different driver
subsystems:
- habana driver updates
- coresight driver updates
- documentation file movements and updates
- Android binder fixes and updates
- extcon driver updates
- google firmware driver updates
- fsi driver updates
- smaller misc and char driver updates
- soundwire driver updates
- nvmem driver updates
- w1 driver fixes
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----
iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCXSXmoQ8cZ3JlZ0Brcm9h
aC5jb20ACgkQMUfUDdst+ylV9wCgyJGbpPch8v/ecrZGFHYS4sIMexIAoMco3zf6
wnqFmXiz1O0tyo1sgV9R
=7sqO
-----END PGP SIGNATURE-----
Merge tag 'char-misc-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char / misc driver updates from Greg KH:
"Here is the "large" pull request for char and misc and other assorted
smaller driver subsystems for 5.3-rc1.
It seems that this tree is becoming the funnel point of lots of
smaller driver subsystems, which is fine for me, but that's why it is
getting larger over time and does not just contain stuff under
drivers/char/ and drivers/misc.
Lots of small updates all over the place here from different driver
subsystems:
- habana driver updates
- coresight driver updates
- documentation file movements and updates
- Android binder fixes and updates
- extcon driver updates
- google firmware driver updates
- fsi driver updates
- smaller misc and char driver updates
- soundwire driver updates
- nvmem driver updates
- w1 driver fixes
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (188 commits)
coresight: Do not default to CPU0 for missing CPU phandle
dt-bindings: coresight: Change CPU phandle to required property
ocxl: Allow contexts to be attached with a NULL mm
fsi: sbefifo: Don't fail operations when in SBE IPL state
coresight: tmc: Smatch: Fix potential NULL pointer dereference
coresight: etm3x: Smatch: Fix potential NULL pointer dereference
coresight: Potential uninitialized variable in probe()
coresight: etb10: Do not call smp_processor_id from preemptible
coresight: tmc-etf: Do not call smp_processor_id from preemptible
coresight: tmc-etr: alloc_perf_buf: Do not call smp_processor_id from preemptible
coresight: tmc-etr: Do not call smp_processor_id() from preemptible
docs: misc-devices: convert files without extension to ReST
fpga: dfl: fme: align PR buffer size per PR datawidth
fpga: dfl: fme: remove copy_to_user() in ioctl for PR
fpga: dfl-fme-mgr: fix FME_PR_INTFC_ID register address.
intel_th: msu: Start read iterator from a non-empty window
intel_th: msu: Split sgt array and pointer in multiwindow mode
intel_th: msu: Support multipage blocks
intel_th: pci: Add Ice Lake NNPI support
intel_th: msu: Fix single mode with disabled IOMMU
...
Pull networking updates from David Miller:
"Some highlights from this development cycle:
1) Big refactoring of ipv6 route and neigh handling to support
nexthop objects configurable as units from userspace. From David
Ahern.
2) Convert explored_states in BPF verifier into a hash table,
significantly decreased state held for programs with bpf2bpf
calls, from Alexei Starovoitov.
3) Implement bpf_send_signal() helper, from Yonghong Song.
4) Various classifier enhancements to mvpp2 driver, from Maxime
Chevallier.
5) Add aRFS support to hns3 driver, from Jian Shen.
6) Fix use after free in inet frags by allocating fqdirs dynamically
and reworking how rhashtable dismantle occurs, from Eric Dumazet.
7) Add act_ctinfo packet classifier action, from Kevin
Darbyshire-Bryant.
8) Add TFO key backup infrastructure, from Jason Baron.
9) Remove several old and unused ISDN drivers, from Arnd Bergmann.
10) Add devlink notifications for flash update status to mlxsw driver,
from Jiri Pirko.
11) Lots of kTLS offload infrastructure fixes, from Jakub Kicinski.
12) Add support for mv88e6250 DSA chips, from Rasmus Villemoes.
13) Various enhancements to ipv6 flow label handling, from Eric
Dumazet and Willem de Bruijn.
14) Support TLS offload in nfp driver, from Jakub Kicinski, Dirk van
der Merwe, and others.
15) Various improvements to axienet driver including converting it to
phylink, from Robert Hancock.
16) Add PTP support to sja1105 DSA driver, from Vladimir Oltean.
17) Add mqprio qdisc offload support to dpaa2-eth, from Ioana
Radulescu.
18) Add devlink health reporting to mlx5, from Moshe Shemesh.
19) Convert stmmac over to phylink, from Jose Abreu.
20) Add PTP PHC (Physical Hardware Clock) support to mlxsw, from
Shalom Toledo.
21) Add nftables SYNPROXY support, from Fernando Fernandez Mancera.
22) Convert tcp_fastopen over to use SipHash, from Ard Biesheuvel.
23) Track spill/fill of constants in BPF verifier, from Alexei
Starovoitov.
24) Support bounded loops in BPF, from Alexei Starovoitov.
25) Various page_pool API fixes and improvements, from Jesper Dangaard
Brouer.
26) Just like ipv4, support ref-countless ipv6 route handling. From
Wei Wang.
27) Support VLAN offloading in aquantia driver, from Igor Russkikh.
28) Add AF_XDP zero-copy support to mlx5, from Maxim Mikityanskiy.
29) Add flower GRE encap/decap support to nfp driver, from Pieter
Jansen van Vuuren.
30) Protect against stack overflow when using act_mirred, from John
Hurley.
31) Allow devmap map lookups from eBPF, from Toke Høiland-Jørgensen.
32) Use page_pool API in netsec driver, Ilias Apalodimas.
33) Add Google gve network driver, from Catherine Sullivan.
34) More indirect call avoidance, from Paolo Abeni.
35) Add kTLS TX HW offload support to mlx5, from Tariq Toukan.
36) Add XDP_REDIRECT support to bnxt_en, from Andy Gospodarek.
37) Add MPLS manipulation actions to TC, from John Hurley.
38) Add sending a packet to connection tracking from TC actions, and
then allow flower classifier matching on conntrack state. From
Paul Blakey.
39) Netfilter hw offload support, from Pablo Neira Ayuso"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (2080 commits)
net/mlx5e: Return in default case statement in tx_post_resync_params
mlx5: Return -EINVAL when WARN_ON_ONCE triggers in mlx5e_tls_resync().
net: dsa: add support for BRIDGE_MROUTER attribute
pkt_sched: Include const.h
net: netsec: remove static declaration for netsec_set_tx_de()
net: netsec: remove superfluous if statement
netfilter: nf_tables: add hardware offload support
net: flow_offload: rename tc_cls_flower_offload to flow_cls_offload
net: flow_offload: add flow_block_cb_is_busy() and use it
net: sched: remove tcf block API
drivers: net: use flow block API
net: sched: use flow block API
net: flow_offload: add flow_block_cb_{priv, incref, decref}()
net: flow_offload: add list handling functions
net: flow_offload: add flow_block_cb_alloc() and flow_block_cb_free()
net: flow_offload: rename TCF_BLOCK_BINDER_TYPE_* to FLOW_BLOCK_BINDER_TYPE_*
net: flow_offload: rename TC_BLOCK_{UN}BIND to FLOW_BLOCK_{UN}BIND
net: flow_offload: add flow_block_cb_setup_simple()
net: hisilicon: Add an tx_desc to adapt HI13X1_GMAC
net: hisilicon: Add an rx_desc to adapt HI13X1_GMAC
...
The variable buffer_index is being initialized however this is never
read and later it is being reassigned to a new value. The initialization
is redundant and hence can be removed.
Addresses-Coverity: ("Unused Value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
When calling debugfs functions, there is no need to ever check the
return value. The function can work or not, but the code logic should
never do something different based on this.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: David Teigland <teigland@redhat.com>
If the DLM lowcomms stack is shut down before any DLM
traffic can be generated, flush_workqueue() and
destroy_workqueue() can be called on empty send and/or recv
workqueues.
Insert guard conditionals to only call flush_workqueue()
and destroy_workqueue() on workqueues that are not NULL.
Signed-off-by: David Windsor <dwindsor@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
Pull m68nommu updates from Greg Ungerer:
"A series of cleanups for the FLAT format binary loader, binfmt_flat,
from Christoph.
The end goal is to support no-MMU on RISC-V, and the last patch
enables that"
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
riscv: add binfmt_flat support
binfmt_flat: don't offset the data start
binfmt_flat: move the MAX_SHARED_LIBS definition to binfmt_flat.c
binfmt_flat: remove the persistent argument from flat_get_addr_from_rp
binfmt_flat: provide an asm-generic/flat.h
binfmt_flat: make support for old format binaries optional
binfmt_flat: add a ARCH_HAS_BINFMT_FLAT option
binfmt_flat: add endianess annotations
binfmt_flat: use fixed size type for the on-disk format
binfmt_flat: consolidate two version of flat_v2_reloc_t
binfmt_flat: remove the unused OLD_FLAT_FLAG_RAM definition
binfmt_flat: remove the uapi <linux/flat.h> header
binfmt_flat: replace flat_argvp_envp_on_stack with a Kconfig variable
binfmt_flat: remove flat_old_ram_flag
binfmt_flat: provide a default version of flat_get_relocate_addr
binfmt_flat: remove flat_set_persistent
binfmt_flat: remove flat_reloc_valid
- Add a new /proc/fs/nfsd/clients/ directory which exposes some
long-requested information about NFSv4 clients (like open files) and
allows forced revocation of client state.
- Replace the global duplicate reply cache by a cache per network
namespace; previously, a request in one network namespace could
incorrectly match an entry from another, though we haven't seen this
in production. This is the last remaining container bug that I'm
aware of; at this point you should be able to run separate nfsd's in
each network namespace, each with their own set of exports, and
everything should work.
- Cleanup and modify lock code to show the pid of lockd as the owner of
NLM locks. This is the correct version of the bugfix originally
attempted in b8eee0e90f "lockd: Show pid of lockd for remote locks".
-----BEGIN PGP SIGNATURE-----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=pAAs
-----END PGP SIGNATURE-----
Merge tag 'nfsd-5.3' of git://linux-nfs.org/~bfields/linux
Pull nfsd updates from Bruce Fields:
"Highlights:
- Add a new /proc/fs/nfsd/clients/ directory which exposes some
long-requested information about NFSv4 clients (like open files)
and allows forced revocation of client state.
- Replace the global duplicate reply cache by a cache per network
namespace; previously, a request in one network namespace could
incorrectly match an entry from another, though we haven't seen
this in production. This is the last remaining container bug that
I'm aware of; at this point you should be able to run separate
nfsd's in each network namespace, each with their own set of
exports, and everything should work.
- Cleanup and modify lock code to show the pid of lockd as the owner
of NLM locks. This is the correct version of the bugfix originally
attempted in b8eee0e90f ("lockd: Show pid of lockd for remote
locks")"
* tag 'nfsd-5.3' of git://linux-nfs.org/~bfields/linux: (34 commits)
nfsd: Make __get_nfsdfs_client() static
nfsd: Make two functions static
nfsd: Fix misuse of strlcpy
sunrpc/cache: remove the exporting of cache_seq_next
nfsd: decode implementation id
nfsd: create xdr_netobj_dup helper
nfsd: allow forced expiration of NFSv4 clients
nfsd: create get_nfsdfs_clp helper
nfsd4: show layout stateids
nfsd: show lock and deleg stateids
nfsd4: add file to display list of client's opens
nfsd: add more information to client info file
nfsd: escape high characters in binary data
nfsd: copy client's address including port number to cl_addr
nfsd4: add a client info file
nfsd: make client/ directory names small ints
nfsd: add nfsd/clients directory
nfsd4: use reference count to free client
nfsd: rename cl_refcount
nfsd: persist nfsd filesystem across mounts
...
- An initial batch of obvious cleanups and fixes from Bob's
recovery patch queue.
- Two iomap conversion patches and some cleanups from Christoph
Hellwig.
- A cosmetic cleanup from Kefeng Wang (Huawei).
- Another minor fix and cleanup by me.
-----BEGIN PGP SIGNATURE-----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=5lRq
-----END PGP SIGNATURE-----
Merge tag 'gfs2-for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2
Pull gfs2 updates from Andreas Gruenbacher:
"Some relatively minor changes for gfs2:
- An initial batch of obvious cleanups and fixes from Bob's recovery
patch queue.
- Two iomap conversion patches and some cleanups from Christoph
Hellwig.
- A cosmetic cleanup from Kefeng Wang (Huawei).
- Another minor fix and cleanup by me"
* tag 'gfs2-for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2:
gfs2: Remove unused gfs2_iomap_alloc argument
gfs2: don't use buffer_heads in gfs2_allocate_page_backing
gfs2: use iomap_bmap instead of generic_block_bmap
gfs2: mark stuffed_readpage static
gfs2: merge gfs2_writepage_common into gfs2_writepage
gfs2: merge gfs2_writeback_aops and gfs2_ordered_aops
gfs2: remove the unused gfs2_stuffed_write_end function
gfs2: use page_offset in gfs2_page_mkwrite
gfs2: replace more printk with calls to fs_info and friends
gfs2: dump fsid when dumping glock problems
gfs2: simplify gfs2_freeze by removing case
gfs2: Rename SDF_SHUTDOWN to SDF_WITHDRAWN
gfs2: Warn when a journal replay overwrites a rgrp with buffers
gfs2: log which portion of the journal is replayed
gfs2: eliminate tr_num_revoke_rm
gfs2: kthread and remount improvements
gfs2: Use IS_ERR_OR_NULL
gfs2: Clean up freeing struct gfs2_sbd
lookups.
-----BEGIN PGP SIGNATURE-----
iQEzBAABCAAdFiEEK2m5VNv+CHkogTfJ8vlZVpUNgaMFAl0lFIoACgkQ8vlZVpUN
gaOwNQf/aJxFxHVf4t3lga8kfoMhlbwINQknsGUVwg32HporMa1NxQXjbEMMhs6V
A31gBJ44nYVz1enz7nvbE4kx4quF4E8rDVprEetphv4i8GSdUAihwJwY5/H0oSd8
rxzTZzNKddoyN/j7H4LgAh7bo6IFk54kUuaAWuZDJnJtfLNQ6RBaIwg6u6Z8Fael
9H3u/RtFHqWPQp5j50PMUG06abr26GKi1gLL+yeoFD1tuzC54B5i6uy34amrXlon
5agIQ7YuB9bigK4VaLoF4df7o+7+Oa6ENaQ9O/TQc9Uy9ngdVlPpNb2bVDizRLNn
e369sBFTf3C8sMycJy6x9TCqg2B7Hw==
=EpCF
-----END PGP SIGNATURE-----
Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 updates from Ted Ts'o:
"Many bug fixes and cleanups, and an optimization for case-insensitive
lookups"
* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: fix coverity warning on error path of filename setup
ext4: replace ktype default_attrs with default_groups
ext4: rename htree_inline_dir_to_tree() to ext4_inlinedir_to_tree()
ext4: refactor initialize_dirent_tail()
ext4: rename "dirent_csum" functions to use "dirblock"
ext4: allow directory holes
jbd2: drop declaration of journal_sync_buffer()
ext4: use jbd2_inode dirty range scoping
jbd2: introduce jbd2_inode dirty range scoping
mm: add filemap_fdatawait_range_keep_errors()
ext4: remove redundant assignment to node
ext4: optimize case-insensitive lookups
ext4: make __ext4_get_inode_loc plug
ext4: clean up kerneldoc warnigns when building with W=1
ext4: only set project inherit bit for directory
ext4: enforce the immutable flag on open files
ext4: don't allow any modifications to an immutable file
jbd2: fix typo in comment of journal_submit_inode_data_buffers
jbd2: fix some print format mistakes
ext4: gracefully handle ext4_break_layouts() failure during truncate
-----BEGIN PGP SIGNATURE-----
iQIVAwUAXRyW8vu3V2unywtrAQIhsw//cVtxLx4ZCox5Z/93cdqych8RoCrwcUEG
Cli0NAjlp/0HETvCsIqdkPKf+4OYCW1tHB2KTdbFdQLZptLgoEhykx89k70z9ggb
ViieEa1GvAKhdamVqkPUC+3Q33uzyRaK7Gi5N3phJoaO+o328SlrPG0LerQgY0Np
Rf3je56A1gIjEgWTmpStxiY262jlgaR3IuvpOqbu2G0TQVWV8CsBKw61fTdmEEQp
dIkNO/xFXS+PvPdmQe5zCAjD/W2D+ggeBMbBwHF411qA60plGinubBYKZ98ikliZ
OnQQPExI7mroIMzpYT+rzEQyxui2nz5t+Hj+d6t7iIvitNcX/Q53sVTq3RfQ0FjG
QCd+j/l2p7fkXK4Sxgb/UBkj/pRr6W+FYSbQ/tmpD8UypEf5B3ln6GuA6yTMuNRF
wVb744slKWq0c7KUuXmz806B2qJoyFG206jyFnoByvs6cPmB1+JqhBBYOKHcwjbo
HIK+oUKkEfE6ofjQ3B9xOQ1anfbRnjjfJCmXvns9v57y/nRP2P78HUJNnEsOolk2
nc3Ep41OgeZdwkts9KnSjmwy6VF3UZ2NQEiWXsUIOxGMtcodw9ci1bpquJ71oyut
4sFMJvMU4eJD+XuCOlAgpbTaQ0Wuf11kFpl1Cof4fj0Z09C25Ahj6iKEKnumtO+4
edfNLlwO6oo=
=wgib
-----END PGP SIGNATURE-----
Merge tag 'afs-next-20190628' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
Pull afs updates from David Howells:
"A set of minor changes for AFS:
- Remove an unnecessary check in afs_unlink()
- Add a tracepoint for tracking callback management
- Add a tracepoint for afs_server object usage
- Use struct_size()
- Add mappings for AFS UAE abort codes to Linux error codes, using
symbolic names rather than hex numbers in the .c file"
* tag 'afs-next-20190628' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
afs: Add support for the UAE error table
fs/afs: use struct_size() in kzalloc()
afs: Trace afs_server usage
afs: Add some callback management tracepoints
afs: afs_unlink() doesn't need to check dentry->d_inode
- Preparations for supporting encryption on ext4 filesystems where the
filesystem block size is smaller than PAGE_SIZE.
- Don't allow setting encryption policies on dead directories.
- Various cleanups.
-----BEGIN PGP SIGNATURE-----
iIoEABYIADIWIQSacvsUNc7UX4ntmEPzXCl4vpKOKwUCXSNh5xQcZWJpZ2dlcnNA
Z29vZ2xlLmNvbQAKCRDzXCl4vpKOK2GPAQDIGnAJ557jCpI23QCWLbCuF1cfEk8J
i+sGdLjx/7SVewD9F1AbNPkm1u6sF0XN7NpGXMk6nU4HDYUXxAYr2RGDYQQ=
=2vas
-----END PGP SIGNATURE-----
Merge tag 'fscrypt-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/fscrypt
Pull fscrypt updates from Eric Biggers:
- Preparations for supporting encryption on ext4 filesystems where the
filesystem block size is smaller than PAGE_SIZE.
- Don't allow setting encryption policies on dead directories.
- Various cleanups.
* tag 'fscrypt-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/fscrypt:
fscrypt: document testing with xfstests
fscrypt: remove selection of CONFIG_CRYPTO_SHA256
fscrypt: remove unnecessary includes of ratelimit.h
fscrypt: don't set policy for a dead directory
ext4: encrypt only up to last block in ext4_bio_write_page()
ext4: decrypt only the needed block in __ext4_block_zero_page_range()
ext4: decrypt only the needed blocks in ext4_block_write_begin()
ext4: clear BH_Uptodate flag on decryption error
fscrypt: decrypt only the needed blocks in __fscrypt_decrypt_bio()
fscrypt: support decrypting multiple filesystem blocks per page
fscrypt: introduce fscrypt_decrypt_block_inplace()
fscrypt: handle blocksize < PAGE_SIZE in fscrypt_zeroout_range()
fscrypt: support encrypting multiple filesystem blocks per page
fscrypt: introduce fscrypt_encrypt_block_inplace()
fscrypt: clean up some BUG_ON()s in block encryption/decryption
fscrypt: rename fscrypt_do_page_crypto() to fscrypt_crypt_block()
fscrypt: remove the "write" part of struct fscrypt_ctx
fscrypt: simplify bounce page handling
- Create a generic copy_file_range handler and make individual
filesystems responsible for calling it (i.e. no more assuming that
do_splice_direct will work or is appropriate)
- Refactor copy_file_range and remap_range parameter checking where they
are the same
- Install missing copy_file_range parameter checking(!)
- Remove suid/sgid and update mtime like any other file write
- Change the behavior so that a copy range crossing the source file's
eof will result in a short copy to the source file's eof instead of
EINVAL
- Permit filesystems to decide if they want to handle cross-superblock
copy_file_range in their local handlers.
-----BEGIN PGP SIGNATURE-----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=qM44
-----END PGP SIGNATURE-----
Merge tag 'copy-file-range-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull copy_file_range updates from Darrick Wong:
"This fixes numerous parameter checking problems and inconsistent
behaviors in the new(ish) copy_file_range system call.
Now the system call will actually check its range parameters
correctly; refuse to copy into files for which the caller does not
have sufficient privileges; update mtime and strip setuid like file
writes are supposed to do; and allows copying up to the EOF of the
source file instead of failing the call like we used to.
Summary:
- Create a generic copy_file_range handler and make individual
filesystems responsible for calling it (i.e. no more assuming that
do_splice_direct will work or is appropriate)
- Refactor copy_file_range and remap_range parameter checking where
they are the same
- Install missing copy_file_range parameter checking(!)
- Remove suid/sgid and update mtime like any other file write
- Change the behavior so that a copy range crossing the source file's
eof will result in a short copy to the source file's eof instead of
EINVAL
- Permit filesystems to decide if they want to handle
cross-superblock copy_file_range in their local handlers"
* tag 'copy-file-range-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
fuse: copy_file_range needs to strip setuid bits and update timestamps
vfs: allow copy_file_range to copy across devices
xfs: use file_modified() helper
vfs: introduce file_modified() helper
vfs: add missing checks to copy_file_range
vfs: remove redundant checks from generic_remap_checks()
vfs: introduce generic_file_rw_checks()
vfs: no fallback for ->copy_file_range
vfs: introduce generic_copy_file_range()
- Only mark inode dirty at the end of writing to a file (instead of once
for every page written).
- Fix for an accounting error in the page_done callback.
-----BEGIN PGP SIGNATURE-----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=so9b
-----END PGP SIGNATURE-----
Merge tag 'iomap-5.3-merge-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull iomap updates from Darrick Wong:
"There are a few fixes for gfs2 but otherwise it's pretty quiet so far.
- Only mark inode dirty at the end of writing to a file (instead of
once for every page written).
- Fix for an accounting error in the page_done callback"
* tag 'iomap-5.3-merge-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
iomap: fix page_done callback for short writes
fs: fold __generic_write_end back into generic_write_end
iomap: don't mark the inode dirty in iomap_write_end
-----BEGIN PGP SIGNATURE-----
iQEzBAABCAAdFiEEq1nRK9aeMoq1VSgcnJ2qBz9kQNkFAl0mED8ACgkQnJ2qBz9k
QNnZ9wgAmC+eP8m6jB38HM7gZ+fWGEX3+FvnjbMbnXmNJTsnYWYC1VIRZhwKZb4b
42OGinfLq5tZMY/whrFBdB/c4UbVhAMhd1aFTpM2n5A6FR12YZxaLZEC+MLy3T7z
VU8m4uWDn80OvlUByo4Bylh+Icj78m8tLgj8SHSWxoh/DlGVKSLj9OKufV9Laens
YxubcUxE5sEEu8IVQen84283oJoizmeQf+f9yogAKIaskDLBzxqBIZwEACEUUchz
kEWRiHwS+Ou8EUHuwXqdKKksQgoLHEdxz2szYK1xSQ1wPmxMKPG5DqbQZv2QUBD0
Ek5T5YP4Tmph4s14n+jKDhakAJcqIQ==
=HWaa
-----END PGP SIGNATURE-----
Merge tag 'for_v5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull ext2, udf and quota updates from Jan Kara:
- some ext2 fixes and cleanups
- a fix of udf bug when extending files
- a fix of quota Q_XGETQSTAT[V] handling
* tag 'for_v5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
udf: Fix incorrect final NOT_ALLOCATED (hole) extent length
ext2: Use kmemdup rather than duplicating its implementation
quota: honor quota type in Q_XGETQSTAT[V] calls
ext2: Always brelse bh on failure in ext2_iget()
ext2: add missing brelse() in ext2_iget()
ext2: Fix a typo in ext2_getattr argument
ext2: fix a typo in comment
ext2: add missing brelse() in ext2_new_inode()
ext2: optimize ext2_xattr_get()
ext2: introduce new helper for xattr entry comparison
ext2: merge xattr next entry check to ext2_xattr_entry_valid()
ext2: code cleanup for ext2_preread_inode()
ext2: code cleanup by using test_opt() and clear_opt()
doc: ext2: update description of quota options for ext2
ext2: Strengthen xattr block checks
ext2: Merge loops in ext2_xattr_set()
ext2: introduce helper for xattr entry validation
ext2: introduce helper for xattr header validation
quota: add dqi_dirty_list description to comment of Dquot List Management
-----BEGIN PGP SIGNATURE-----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=e9Bd
-----END PGP SIGNATURE-----
Merge tag 'locks-v5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux
Pull file locking updates from Jeff Layton:
"Just a couple of small lease-related patches this cycle.
One from Ira to add a new tracepoint that fires during lease conflict
checks, and another patch from Amir to reduce false positives when
checking for lease conflicts"
* tag 'locks-v5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux:
locks: eliminate false positive conflicts for write lease
locks: Add trace_leases_conflict
As Park Ju Hyung suggested:
"I'd like to suggest to write down an actual version of f2fs-tools
here as we've seen older versions of fsck doing even more damage
and the users might not have the latest f2fs-tools installed."
This patch give a more detailed info of how we fix such corruption
to user to avoid damageable repair with low version fsck.
Signed-off-by: Park Ju Hyung <qkrwngud825@gmail.com>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
blkoff_off might over 512 due to fs corrupt or security
vulnerability. That should be checked before being using.
Use ENTRIES_IN_SUM to protect invalid value in cur_data_blkoff.
Signed-off-by: Ocean Chen <oceanchen@google.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
In umount, we give an constand time to handle pending discard, previously,
in __issue_discard_cmd() we missed to check timeout condition in loop,
result in delaying long time, fix it.
Signed-off-by: Heng Xiao <heng.xiao@unisoc.com>
[Chao Yu: add commit message]
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
RHBZ: 1672539
In smb2_query_symlink(), if we are parsing the error buffer but it is not something
we recognize as a symlink we should return -EINVAL and not -ENOENT.
I.e. the entry does exist, it is just not something we recognize.
Additionally, add check to verify that that the errortag and the reparsetag all make sense.
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Acked-by: Paulo Alcantara <palcantara@suse.de>
Signed-off-by: Steve French <stfrench@microsoft.com>
We need to chain the earlier bios to the later ones, so that
submit_bio_wait waits on the bio that all the completions are
dispatched to.
Fixes: 6ad5b3255b ("xfs: use bios directly to read and write the log recovery buffers")
Reported-by: Dave Chinner <david@fromorbit.com>
Tested-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
When writeback IOs are bounced through async layers, the IOs should
only be accounted against the wbc from the original bdi writeback to
avoid confusing cgroup inode ownership arbitration. Add
wbc->no_cgroup_owner to allow disabling wbc cgroup owner accounting.
This will be used make btrfs compression work well with cgroup IO
control.
v2: Renamed from no_wbc_acct to no_cgroup_owner and added comment as
per Jan.
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
wbc_account_io() does a very specific job - try to see which cgroup is
actually dirtying an inode and transfer its ownership to the majority
dirtier if needed. The name is too generic and confusing. Let's
rename it to something more specific.
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
