f2fs_write_begin() doesn't initialize the 'dn' variable if the inode has
inline data. However it uses its contents to decide whether it should
just zero out the page or load data to it. Thus if we are unlucky we can
zero out page contents instead of loading inline data into a page.
CC: stable@vger.kernel.org
CC: Changman Lee <cm224.lee@samsung.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Rename f2fs_set/clear_bit to f2fs_test_and_set/clear_bit, which mean
set/clear bit and return the old value, for better readability.
Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Set raw_super default to NULL to avoid the possibly used
uninitialized warning, though we may never hit it in fact.
Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Introduce f2fs_change_bit to simplify the change bit logic in
function set_to_next_nat{sit}.
Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Use clear_inode_flag to replace the redundant cond_clear_inode_flag.
Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Remove the unneeded argument 'type' from __get_victim, use
NO_CHECK_TYPE directly when calling v_ops->get_victim().
Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
If user specifies too low end sector for trimming, f2fs_trim_fs() will
use uninitialized value as a number of trimmed blocks and returns it to
userspace. Initialize number of trimmed blocks early to avoid the
problem.
Coverity-id: 1248809
CC: stable@vger.kernel.org
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This patch declares f2fs_convert_inline_dir as a static function, which was
reported by kbuild test robot.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This patch introduces f2fs_dentry_ptr structure for the use of a function
parameter in inline_dentry operations.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This patch introduces a core function, f2fs_fill_dentries, to remove
redundant code in f2fs_readdir and f2fs_read_inline_dir.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Previously, init_inode_metadata does not hold any parent directory's inode
page. So, f2fs_init_acl can grab its parent inode page without any problem.
But, when we use inline_dentry, that page is grabbed during f2fs_add_link,
so that we can fall into deadlock condition like below.
INFO: task mknod:11006 blocked for more than 120 seconds.
Tainted: G OE 3.17.0-rc1+ #13
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
mknod D ffff88003fc94580 0 11006 11004 0x00000000
ffff880007717b10 0000000000000002 ffff88003c323220 ffff880007717fd8
0000000000014580 0000000000014580 ffff88003daecb30 ffff88003c323220
ffff88003fc94e80 ffff88003ffbb4e8 ffff880007717ba0 0000000000000002
Call Trace:
[<ffffffff8173dc40>] ? bit_wait+0x50/0x50
[<ffffffff8173d4cd>] io_schedule+0x9d/0x130
[<ffffffff8173dc6c>] bit_wait_io+0x2c/0x50
[<ffffffff8173da3b>] __wait_on_bit_lock+0x4b/0xb0
[<ffffffff811640a7>] __lock_page+0x67/0x70
[<ffffffff810acf50>] ? autoremove_wake_function+0x40/0x40
[<ffffffff811652cc>] pagecache_get_page+0x14c/0x1e0
[<ffffffffa029afa9>] get_node_page+0x59/0x130 [f2fs]
[<ffffffffa02a63ad>] read_all_xattrs+0x24d/0x430 [f2fs]
[<ffffffffa02a6ca2>] f2fs_getxattr+0x52/0xe0 [f2fs]
[<ffffffffa02a7481>] f2fs_get_acl+0x41/0x2d0 [f2fs]
[<ffffffff8122d847>] get_acl+0x47/0x70
[<ffffffff8122db5a>] posix_acl_create+0x5a/0x150
[<ffffffffa02a7759>] f2fs_init_acl+0x29/0xcb [f2fs]
[<ffffffffa0286a8d>] init_inode_metadata+0x5d/0x340 [f2fs]
[<ffffffffa029253a>] f2fs_add_inline_entry+0x12a/0x2e0 [f2fs]
[<ffffffffa0286ea5>] __f2fs_add_link+0x45/0x4a0 [f2fs]
[<ffffffffa028b5b6>] ? f2fs_new_inode+0x146/0x220 [f2fs]
[<ffffffffa028b816>] f2fs_mknod+0x86/0xf0 [f2fs]
[<ffffffff811e3ec1>] vfs_mknod+0xe1/0x160
[<ffffffff811e4b26>] SyS_mknod+0x1f6/0x200
[<ffffffff81741d7f>] tracesys+0xe1/0xe6
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This patch adds descriptions for the inline dir support in f2fs document.
Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Add inline dir functions into normal dir ops' function to handle inline ops.
Besides, we enable inline dir mode when a new dir inode is created if
inline_data option is on.
Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Adds Functions to implement inline dir init/lookup/insert/delete/convert ops.
Signed-off-by: Chao Yu <chao2.yu@samsung.com>
[Jaegeuk Kim: remove needless reserved area copy, pointed by Dan Carpenter]
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This patch exports some dir operations for inline dir, additionally introduces
f2fs_drop_nlink from f2fs_delete_entry for reusing by inline dir function.
Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This patch defines macro/inline dentry structure, and adds some helpers for
inline dir infrastructure.
Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
The sceanrio is like this.
inline_data i_size page write_begin/vm_page_mkwrite
X 30 dirty_page
X 30 write to #4096 position
X 30 get_dnode_of_data wait for get_dnode_of_data
O 30 write inline_data
O 30 get_dnode_of_data
O 30 reserve data block
..
In this case, we have #0 = NEW_ADDR and inline_data as well.
We should not allow this condition for further access.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Let's consider the following scenario.
blkaddr[0] inline_data i_size i_blocks writepage truncate
NEW X 4096 2 dirty page #0
NEW X 0 change i_size
NEW X 0 2 f2fs_write_inline_data
NEW X 0 2 get_dnode_of_data
NEW X 0 2 truncate_data_blocks_range
NULL O 0 1 memcpy(inline_data)
NULL O 0 1 f2fs_put_dnode
NULL O 0 1 f2fs_truncate
NULL O 0 1 get_dnode_of_data
NULL O 0 1 *invalid block addr*
This patch adds checking inline_data flag during f2fs_truncate not to refer
corrupted block indices.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
When trying to write inline_data, we should truncate any data block allocated
and pointed by the inode block.
We should consider the data index is not 0.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Pull m68k update from Geert Uytterhoeven.
Just wiring up the bpf system call.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
m68k: Wire up bpf
A surprisingly small batch of fixes for -rc3. Suspiciously small, I'd say.
Anyway, most of this are a few defconfig updates. Some for omap to deal
with kernel binary size (moving ipv6 to module, etc). A larger one for
socfpga that refreshes with some churn, but also turns on a few options
that makes the newly-added board in my bootfarm usable for testing.
OMAP3 will also now warn when booted with legacy (non-DT) boot protocols,
hopefully encouraging those who still care about some of those platforms
to submit DT support and report bugs where needed. Nothing stops working
though, this is just to warn for future deprecation.
Beyond this, very few actual bugfixes. A PXA fix for DEBUG_LL boot hangs,
a missing terminting entry in a dt_match array on RealView a MTD fix on
OMAP with NAND.
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Merge tag 'armsoc-for-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"A surprisingly small batch of fixes for -rc3. Suspiciously small, I'd
say.
Anyway, most of this are a few defconfig updates. Some for omap to
deal with kernel binary size (moving ipv6 to module, etc). A larger
one for socfpga that refreshes with some churn, but also turns on a
few options that makes the newly-added board in my bootfarm usable for
testing.
OMAP3 will also now warn when booted with legacy (non-DT) boot
protocols, hopefully encouraging those who still care about some of
those platforms to submit DT support and report bugs where needed.
Nothing stops working though, this is just to warn for future
deprecation.
Beyond this, very few actual bugfixes. A PXA fix for DEBUG_LL boot
hangs, a missing terminting entry in a dt_match array on RealView a
MTD fix on OMAP with NAND"
[ Obviously missed rc3, will make rc4 instead ;) ]
* tag 'armsoc-for-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
MAINTAINERS: drop list entry for davinci
ARM: OMAP2+: Warn about deprecated legacy booting mode
ARM: omap2plus_defconfig: Fix errors with NAND BCH
ARM: multi_v7_defconfig: fix support for APQ8084
soc: versatile: Add terminating entry for realview_soc_of_match
ARM: ixp4xx: remove compilation warnings in io.h
MAINTAINERS: Add Soren as reviewer for Zynq
ARM: omap2plus_defconfig: Fix bloat caused by having ipv6 built-in
ARM: socfpga_defconfig: Update defconfig for SoCFPGA
ARM: pxa: fix hang on startup with DEBUG_LL
* A regression from 3.16 which was noticed in 3.17. With the restructuring of
the m25p80.c driver and the SPI NOR library framework, we omitted proper
listing of the SPI device IDs. This means m25p80.c wouldn't auto-load
(modprobe) properly when built as a module. For now, we duplicate the device
IDs into both modules.
* The OMAP / ELM modules were depending on an implicit link ordering. Use
deferred probing so that the new link order (in 3.18-rc) can still allow for
successful probing.
* Fix suspend/resume support for LH28F640BF NOR flash
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Merge tag 'for-linus-20141102' of git://git.infradead.org/linux-mtd
Pull MTD fixes from Brian Norris:
"Three main MTD fixes for 3.18:
- A regression from 3.16 which was noticed in 3.17. With the
restructuring of the m25p80.c driver and the SPI NOR library
framework, we omitted proper listing of the SPI device IDs. This
means m25p80.c wouldn't auto-load (modprobe) properly when built as
a module. For now, we duplicate the device IDs into both modules.
- The OMAP / ELM modules were depending on an implicit link ordering.
Use deferred probing so that the new link order (in 3.18-rc) can
still allow for successful probing.
- Fix suspend/resume support for LH28F640BF NOR flash"
* tag 'for-linus-20141102' of git://git.infradead.org/linux-mtd:
mtd: cfi_cmdset_0001.c: fix resume for LH28F640BF chips
mtd: omap: fix mtd devices not showing up
mtd: m25p80,spi-nor: Fix module aliases for m25p80
mtd: spi-nor: make spi_nor_scan() take a chip type name, not spi_device_id
mtd: m25p80: get rid of spi_get_device_id
This is a set of six patches consisting of two MAINTAINER updates, two scsi-mq
fixs for the old parallel interface (not every request is tagged and we need
to set the right flags to populate the SPI tag message) and a fix for a memory
leak in scatterlist traversal caused by a preallocation update in 3.17) and an
ipv6 fix for cxgbi.
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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Merge tag 'scsi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"This is a set of six patches consisting of:
- two MAINTAINER updates
- two scsi-mq fixs for the old parallel interface (not every request
is tagged and we need to set the right flags to populate the SPI
tag message)
- a fix for a memory leak in scatterlist traversal caused by a
preallocation update in 3.17
- an ipv6 fix for cxgbi"
[ The scatterlist fix also came in separately through the block layer tree ]
* tag 'scsi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
MAINTAINERS: ufs - remove self
MAINTAINERS: change hpsa and cciss maintainer
libcxgbi : support ipv6 address host_param
scsi: set REQ_QUEUE for the blk-mq case
Revert "block: all blk-mq requests are tagged"
lib/scatterlist: fix memory leak with scsi-mq
Pull drm fixes from Dave Airlie:
"Nothing too astounding or major: radeon, i915, vmwgfx, armada and
exynos.
Biggest ones:
- vmwgfx has one big locking regression fix
- i915 has come displayport fixes
- radeon has some stability and a memory alloc failure
- armada and exynos have some vblank fixes"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (24 commits)
drm/exynos: correct connector->dpms field before resuming
drm/exynos: enable vblank after DPMS on
drm/exynos: init kms poll at the end of initialization
drm/exynos: propagate plane initialization errors
drm/exynos: vidi: fix build warning
drm/exynos: remove explicit encoder/connector de-initialization
drm/exynos: init vblank with real number of crtcs
drm/vmwgfx: Filter out modes those cannot be supported by the current VRAM size.
drm/vmwgfx: Fix hash key computation
drm/vmwgfx: fix lock breakage
drm/i915/dp: only use training pattern 3 on platforms that support it
drm/radeon: remove some buggy dead code
drm/i915: Ignore VBT backlight check on Macbook 2, 1
drm/radeon: remove invalid pci id
drm/radeon: dpm fixes for asrock systems
radeon: clean up coding style differences in radeon_get_bios()
drm/radeon: Use drm_malloc_ab instead of kmalloc_array
drm/radeon/dpm: disable ulv support on SI
drm/i915: Fix GMBUSFREQ on vlv/chv
drm/i915: Ignore long hpds on eDP ports
...
produce errors when booted with omap2plus_defconfig, and
reduce bloat by making IPV6 a loadable module.
Also let's add a warning about legacy boot being deprecated
for omap3.
We now have things working with device tree, and only omap3 is
still booting in legacy mode. So hopefully this warning will
help move the remaining legacy mode users to boot with device
tree.
As the total reduction of code and static data is somewhere
around 20000 lines of code once we remove omap3 legacy mode
booting, we really do want to make omap3 to boot also in
device tree mode only over the next few merge cycles.
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Merge tag 'fixes-against-v3.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
Merge "omap fixes against v3.18-rc2" from Tony Lindgren:
Few fixes for omaps to enable NAND BCH so devices won't
produce errors when booted with omap2plus_defconfig, and
reduce bloat by making IPV6 a loadable module.
Also let's add a warning about legacy boot being deprecated
for omap3.
We now have things working with device tree, and only omap3 is
still booting in legacy mode. So hopefully this warning will
help move the remaining legacy mode users to boot with device
tree.
As the total reduction of code and static data is somewhere
around 20000 lines of code once we remove omap3 legacy mode
booting, we really do want to make omap3 to boot also in
device tree mode only over the next few merge cycles.
* tag 'fixes-against-v3.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: (407 commits)
ARM: OMAP2+: Warn about deprecated legacy booting mode
ARM: omap2plus_defconfig: Fix errors with NAND BCH
ARM: omap2plus_defconfig: Fix bloat caused by having ipv6 built-in
+ Linux 3.18-rc2
Signed-off-by: Olof Johansson <olof@lixom.net>
Pull ARM fixes from Russell King:
- add the new bpf syscall to ARM.
- drop a redundant return statement in __iommu_alloc_remap()
- fix a performance issue noticed by Thomas Petazzoni with
kmap_atomic().
- fix an issue with the L2 cache OF parsing code which caused it to
incorrectly print warnings on each boot, and make the warning text
more consistent with the rest of the code
* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
ARM: 8180/1: mm: implement no-highmem fast path in kmap_atomic_pfn()
ARM: 8183/1: l2c: Improve l2c310_of_parse() error message
ARM: 8181/1: Drop extra return statement
ARM: 8182/1: l2c: Make l2x0_cache_size_of_parse() return 'int'
ARM: enable bpf syscall
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"A small set of x86 fixes. The most serious is an SRCU lockdep fix.
A bit late - needed some time to test the SRCU fix, which only came in
on Friday"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: vmx: defer load of APIC access page address during reset
KVM: nVMX: Disable preemption while reading from shadow VMCS
KVM: x86: Fix far-jump to non-canonical check
KVM: emulator: fix execution close to the segment limit
KVM: emulator: fix error code for __linearize
This pull-request includes some bug fixes and code cleanups.
Especially, this fixes the bind failure issue occurred when it tries
to re-bind Exynos drm driver after unbound, and the modetest failure
issue incurred by not having a pair to vblank on and off requests.
* 'exynos-drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos:
drm/exynos: correct connector->dpms field before resuming
drm/exynos: enable vblank after DPMS on
drm/exynos: init kms poll at the end of initialization
drm/exynos: propagate plane initialization errors
drm/exynos: vidi: fix build warning
drm/exynos: remove explicit encoder/connector de-initialization
drm/exynos: init vblank with real number of crtcs
Pull VFS fixes from Al Viro:
"A bunch of assorted fixes, most of them followups to overlayfs merge"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
ovl: initialize ->is_cursor
Return short read or 0 at end of a raw device, not EIO
isofs: don't bother with ->d_op for normal case
isofs_cmp(): we'll never see a dentry for . or ..
overlayfs: fix lockdep misannotation
ovl: fix check for cursor
overlayfs: barriers for opening upper-layer directory
rcu: Provide counterpart to rcu_dereference() for non-RCU situations
staging: android: logger: Fix log corruption regression
The sk_prot is irda's own set of protocol handlers, so irda should
statically know what that function is anyway, without using an indirect
pointer. And as it happens, we know *exactly* what that pointer is
statically: it's NULL, because irda doesn't define a disconnect
operation.
So calling that function is doubly wrong, and will just cause an oops.
Reported-by: Martin Lang <mlg.hessigheim@gmail.com>
Cc: Samuel Ortiz <samuel@sortiz.org>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
