The kernel mount_block_root() function expects -EACESS or -EINVAL for a
unmountable filesystem when trying to mount the root with different
filesystem types.
However, in 5.3-rc1 the behavior when F2FS code cannot find valid block
changed to return -EFSCORRUPTED(-EUCLEAN), and this error code makes
mount_block_root() fail when trying to probe F2FS.
When the magic number of the superblock mismatches, it has a high
probability that it's just not a F2FS. In this case return -EINVAL seems
to be a better result, and this return value can make mount_block_root()
probing work again.
Return -EINVAL when the superblock has magic mismatch, -EFSCORRUPTED in
other cases (the magic matches but the superblock cannot be recognized).
Fixes: 10f966bbf5 ("f2fs: use generic EFSBADCRC/EFSCORRUPTED")
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
f2fs_allocate_data_block() invalidates old block address and enable new block
address. Then, if we try to read old block by f2fs_submit_page_bio(), it will
give WARN due to reading invalid blocks.
Let's make the order sanely back.
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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>
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.
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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
...
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>
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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
...
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>
This patch allows fallocate to allocate physical blocks for pinned file.
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
The discard thread should issue upto dpolicy->max_requests at once
and wait for all those discard requests at once it reaches
dpolicy->max_requests. It should then sleep for dpolicy->min_interval
timeout before issuing the next batch of discard requests. But in the
current code of is_idle(), it checks for dcc_info->queued_discard and
aborts issuing the discard batch of max_requests. This
dcc_info->queued_discard will be true always once one discard command
is issued.
It is thus resulting into this type of discard request pattern -
- Issue discard request#1
- is_idle() returns false, discard thread waits for request#1 and then
sleeps for min_interval 50ms.
- Issue discard request#2
- is_idle() returns false, discard thread waits for request#2 and then
sleeps for min_interval 50ms.
- and so on for all other discard requests, assuming f2fs is idle w.r.t
other conditions.
With this fix, the pattern will look like this -
- Issue discard request#1
- Issue discard request#2
and so on upto max_requests of 8
- Issue discard request#8
- wait for min_interval 50ms.
Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Two paths to update quota and f2fs_lock_op:
1.
- lock_op
| - quota_update
`- unlock_op
2.
- quota_update
- lock_op
`- unlock_op
But, we need to make a transaction on quota_update + lock_op in #2 case.
So, this patch introduces:
1. lock_op
2. down_write
3. check __need_flush
4. up_write
5. if there is dirty quota entries, flush them
6. otherwise, good to go
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
If xattr is corrupted, let's print kernel message and set SBI_NEED_FSCK
for further repair.
Reported-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
f2fs uses EFAULT as error number to indicate filesystem is corrupted
all the time, but generic filesystems use EUCLEAN for such condition,
we need to change to follow others.
This patch adds two new macros as below to wrap more generic error
code macros, and spread them in code.
EFSBADCRC EBADMSG /* Bad CRC detected */
EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */
Reported-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Replace the open-coded divisions with round-up by calls to the
DIV_ROUND_UP() helper macro.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
As Pavel reported, once we detect filesystem inconsistency in
f2fs_inplace_write_data(), it will be better to print kernel message as
we did in other places.
Reported-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
- Add and use f2fs_<level> macros
- Convert f2fs_msg to f2fs_printk
- Remove level from f2fs_printk and embed the level in the format
- Coalesce formats and align multi-line arguments
- Remove unnecessary duplicate extern f2fs_msg f2fs.h
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This ioctl shrinks a given length (aligned to sections) from end of the
main area. Any cursegs and valid blocks will be moved out before
invalidating the range.
This feature can be used for adjusting partition sizes online.
History of the patch:
Sahitya Tummala:
- Add this ioctl for f2fs_compat_ioctl() as well.
- Fix debugfs status to reflect the online resize changes.
- Fix potential race between online resize path and allocate new data
block path or gc path.
Others:
- Rename some identifiers.
- Add some error handling branches.
- Clear sbi->next_victim_seg[BG_GC/FG_GC] in shrinking range.
- Implement this interface as ext4's, and change the parameter from shrunk
bytes to new block count of F2FS.
- During resizing, force to empty sit_journal and forbid adding new
entries to it, in order to avoid invalid segno in journal after resize.
- Reduce sbi->user_block_count before resize starts.
- Commit the updated superblock first, and then update in-memory metadata
only when the former succeeds.
- Target block count must align to sections.
- Write checkpoint before and after committing the new superblock, w/o
CP_FSCK_FLAG respectively, so that the FS can be fixed by fsck even if
resize fails after the new superblock is committed.
- In free_segment_range(), reduce granularity of gc_mutex.
- Add protection on curseg migration.
- Add freeze_bdev() and thaw_bdev() for resize fs.
- Remove CUR_MAIN_SECS and use MAIN_SECS directly for allocation.
- Recover super_block and FS metadata when resize fails.
- No need to clear CP_FSCK_FLAG in update_ckpt_flags().
- Clean up the sb and fs metadata update functions for resize_fs.
Geert Uytterhoeven:
- Use div_u64*() for 64-bit divisions
Arnd Bergmann:
- Not all architectures support get_user() with a 64-bit argument:
ERROR: "__get_user_bad" [fs/f2fs/f2fs.ko] undefined!
Use copy_from_user() here, this will always work.
Signed-off-by: Qiuyang Sun <sunqiuyang@huawei.com>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
It doesn't make any sense to have project inherit bits
for regular files, even though this won't cause any
problem, but it is better fix this.
Cc: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Wang Shilong <wshilong@ddn.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
f2fs copied all the on-disk i_flags from ext4, and along with it the
assumption that the on-disk i_flags are the same as the bits used by
FS_IOC_GETFLAGS and FS_IOC_SETFLAGS. This is problematic because
reserving an on-disk inode flag in either filesystem's i_flags or in
these ioctls effectively reserves it in all the other places too. In
fact, most of the "f2fs i_flags" are not used by f2fs at all.
Fix this by separating f2fs's i_flags from the ioctl bits and ext4's
i_flags.
In the process, un-reserve all "f2fs i_flags" that aren't actually
supported by f2fs. This included various flags that were not settable
at all, as well as various flags that were settable by FS_IOC_SETFLAGS
but didn't actually do anything.
There's a slight chance we'll need to add some flag(s) back to
FS_IOC_SETFLAGS in order to avoid breaking users who expect f2fs to
accept some random flag(s). But hopefully such users don't exist.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
The kobj_type default_attrs field is being replaced by the
default_groups field. Replace the default_attrs fields in f2fs_sb_ktype
and f2fs_feat_ktype with default_groups. Use the ATTRIBUTE_GROUPS macro
to create f2fs_groups and f2fs_feat_groups.
Fixes: fef4129ec2 ("f2fs: fix to be aware discard/preflush/dio command in is_idle()")
Signed-off-by: Kimberly Brown <kimbrownkd@gmail.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
The kobj_type default_attrs field is being replaced by the
default_groups field. Replace the default_attrs fields in f2fs_sb_ktype
and f2fs_feat_ktype with default_groups. Use the ATTRIBUTE_GROUPS macro
to create f2fs_groups and f2fs_feat_groups.
Signed-off-by: Kimberly Brown <kimbrownkd@gmail.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This extends the checkpoint option to allow checkpoint=disable:%u[%]
This allows you to specify what how much of the disk you are willing
to lose access to while mounting with checkpoint=disable. If the amount
lost would be higher, the mount will return -EAGAIN. This can be given
as a percent of total space, or in blocks.
Currently, we need to run garbage collection until the amount of holes
is smaller than the OVP space. With the new option, f2fs can mark
space as unusable up front instead of requiring garbage collection until
the number of holes is small enough.
Signed-off-by: Daniel Rosenberg <drosen@google.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Fixes possible underflows when dealing with unusable blocks.
Signed-off-by: Daniel Rosenberg <drosen@google.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
On a remount, you can currently set root reserved if it was not
previously set. This can cause an underflow if reserved has been set to
a very high value, since then root reserved + current reserved could be
greater than user_block_count. inc_valid_block_count later subtracts out
these values from user_block_count, causing an underflow.
Signed-off-by: Daniel Rosenberg <drosen@google.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
The existing threshold for allowable holes at checkpoint=disable time is
too high. The OVP space contains reserved segments, which are always in
the form of free segments. These must be subtracted from the OVP value.
The current threshold is meant to be the maximum value of holes of a
single type we can have and still guarantee that we can fill the disk
without failing to find space for a block of a given type.
If the disk is full, ignoring current reserved, which only helps us,
the amount of unused blocks is equal to the OVP area. Of that, there
are reserved segments, which must be free segments, and the rest of the
ovp area, which can come from either free segments or holes. The maximum
possible amount of holes is OVP-reserved.
Now, consider the disk when mounting with checkpoint=disable.
We must be able to fill all available free space with either data or
node blocks. When we start with checkpoint=disable, holes are locked to
their current type. Say we have H of one type of hole, and H+X of the
other. We can fill H of that space with arbitrary typed blocks via SSR.
For the remaining H+X blocks, we may not have any of a given block type
left at all. For instance, if we were to fill the disk entirely with
blocks of the type with fewer holes, the H+X blocks of the opposite type
would not be used. If H+X > OVP-reserved, there would be more holes than
could possibly exist, and we would have failed to find a suitable block
earlier on, leading to a crash in update_sit_entry.
If H+X <= OVP-reserved, then the holes end up effectively masked by the OVP
region in this case.
Signed-off-by: Daniel Rosenberg <drosen@google.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Fix f2fs_show_options to show nodiscard mount option.
Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Add error prints to get more details on the mount failure.
Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
As Jungyeon Reported in bugzilla:
https://bugzilla.kernel.org/show_bug.cgi?id=203233
- Reproduces
gcc poc_13.c
./run.sh f2fs
- Kernel messages
F2FS-fs (sdb): Bitmap was wrongly set, blk:4608
kernel BUG at fs/f2fs/segment.c:2133!
RIP: 0010:update_sit_entry+0x35d/0x3e0
Call Trace:
f2fs_allocate_data_block+0x16c/0x5a0
do_write_page+0x57/0x100
f2fs_do_write_node_page+0x33/0xa0
__write_node_page+0x270/0x4e0
f2fs_sync_node_pages+0x5df/0x670
f2fs_write_checkpoint+0x364/0x13a0
f2fs_sync_fs+0xa3/0x130
f2fs_do_sync_file+0x1a6/0x810
do_fsync+0x33/0x60
__x64_sys_fsync+0xb/0x10
do_syscall_64+0x43/0x110
entry_SYSCALL_64_after_hwframe+0x44/0xa9
The testcase fails because that, in fuzzed image, current segment was
allocated with LFS type, its .next_blkoff should point to an unused
block address, but actually, its bitmap shows it's not. So during
allocation, f2fs crash when setting bitmap.
Introducing sanity_check_curseg() to check such inconsistence of
current in-used segment.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Rename fscrypt_encrypt_page() to fscrypt_encrypt_pagecache_blocks() and
redefine its behavior to encrypt all filesystem blocks from the given
region of the given page, rather than assuming that the region consists
of just one filesystem block. Also remove the 'inode' and 'lblk_num'
parameters, since they can be retrieved from the page as it's already
assumed to be a pagecache page.
This is in preparation for allowing encryption on ext4 filesystems with
blocksize != PAGE_SIZE.
This is based on work by Chandan Rajendra.
Reviewed-by: Chandan Rajendra <chandan@linux.ibm.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Currently, bounce page handling for writes to encrypted files is
unnecessarily complicated. A fscrypt_ctx is allocated along with each
bounce page, page_private(bounce_page) points to this fscrypt_ctx, and
fscrypt_ctx::w::control_page points to the original pagecache page.
However, because writes don't use the fscrypt_ctx for anything else,
there's no reason why page_private(bounce_page) can't just point to the
original pagecache page directly.
Therefore, this patch makes this change. In the process, it also cleans
up the API exposed to filesystems that allows testing whether a page is
a bounce page, getting the pagecache page from a bounce page, and
freeing a bounce page.
Reviewed-by: Chandan Rajendra <chandan@linux.ibm.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
This allows more aggressive discards and balancing job to be done
under gc_urgent.
Signed-off-by: Park Ju Hyung <qkrwngud825@gmail.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
As Ju Hyung reported:
"
I was semi-forced today to use the new kernel and test f2fs.
My Ubuntu initramfs got a bit wonky and I had to boot into live CD and
fix some stuffs. The live CD was using 4.15 kernel, and just mounting
the f2fs partition there corrupted f2fs and my 4.19(with 5.1-rc1-4.19
f2fs-stable merged) refused to mount with "SIT is corrupted node"
message.
I used the latest f2fs-tools sent by Chao including "fsck.f2fs: fix to
repair cp_loads blocks at correct position"
It spit out 140M worth of output, but at least I didn't have to run it
twice. Everything returned "Ok" in the 2nd run.
The new log is at
http://arter97.com/f2fs/final
After fixing the image, I used my 4.19 kernel with 5.2-rc1-4.19
f2fs-stable merged and it mounted.
But, I got this:
[ 1.047791] F2FS-fs (nvme0n1p3): layout of large_nat_bitmap is
deprecated, run fsck to repair, chksum_offset: 4092
[ 1.081307] F2FS-fs (nvme0n1p3): Found nat_bits in checkpoint
[ 1.161520] F2FS-fs (nvme0n1p3): recover fsync data on readonly fs
[ 1.162418] F2FS-fs (nvme0n1p3): Mounted with checkpoint version = 761c7e00
But after doing a reboot, the message is gone:
[ 1.098423] F2FS-fs (nvme0n1p3): Found nat_bits in checkpoint
[ 1.177771] F2FS-fs (nvme0n1p3): recover fsync data on readonly fs
[ 1.178365] F2FS-fs (nvme0n1p3): Mounted with checkpoint version = 761c7eda
I'm not exactly sure why the kernel detected that I'm still using the
old layout on the first boot. Maybe fsck didn't fix it properly, or
the check from the kernel is improper.
"
Although we have rebuild the old deprecated checkpoint with new layout
during repair, we only repair last checkpoint park, the other old one is
remained.
Once the image was mounted, we will 1) sanity check layout and 2) decide
which checkpoint park to use according to cp_ver. So that we will print
reported message unnecessarily at step 1), to avoid it, we simply move
layout check into f2fs_sanity_check_ckpt() after step 2).
Reported-by: Park Ju Hyung <qkrwngud825@gmail.com>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This patch reverts:
commit fb40d618b0 ("f2fs: don't clear CP_QUOTA_NEED_FSCK_FLAG").
We were missing error handlers used in f2fs quota ops.
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Add SPDX license identifiers to all Make/Kconfig files which:
- Have no license information of any form
These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:
GPL-2.0-only
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Another round of various bug fixes came in. Damien improved SMR drive support a
bit, and Chao replaced BUG_ON() with reporting errors to user since we've not
hit from users but did hit from crafted images. We've found a disk layout bug
in large_nat_bits feature which supports very large NAT entries enabled at mkfs.
If the feature is enabled, it will give a notice to run fsck to correct the
on-disk layout.
Enhancement:
- reduce memory consumption for SMR drive
- better discard handling for multiple partitions
- tracepoints for f2fs_file_write_iter/f2fs_filemap_fault
- allow to change CP_CHKSUM_OFFSET
- detect wrong layout of large_nat_bitmap feature
- enhance checking valid data indices
Bug fix:
- Multiple partition support for SMR drive
- deadlock problem in f2fs_balance_fs_bg
- add boundary checks to fix abnormal behaviors on fuzzed images
- inline_xattr space calculations
- replace f2fs_bug_on with errors
In addition, this series contains various memory boundary check and sanity check
of on-disk consistency.
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Merge tag 'f2fs-for-v5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs
Pull f2fs updates from Jaegeuk Kim:
"Another round of various bug fixes came in. Damien improved SMR drive
support a bit, and Chao replaced BUG_ON() with reporting errors to
user since we've not hit from users but did hit from crafted images.
We've found a disk layout bug in large_nat_bits feature which supports
very large NAT entries enabled at mkfs. If the feature is enabled, it
will give a notice to run fsck to correct the on-disk layout.
Enhancements:
- reduce memory consumption for SMR drive
- better discard handling for multiple partitions
- tracepoints for f2fs_file_write_iter/f2fs_filemap_fault
- allow to change CP_CHKSUM_OFFSET
- detect wrong layout of large_nat_bitmap feature
- enhance checking valid data indices
Bug fixes:
- Multiple partition support for SMR drive
- deadlock problem in f2fs_balance_fs_bg
- add boundary checks to fix abnormal behaviors on fuzzed images
- inline_xattr space calculations
- replace f2fs_bug_on with errors
In addition, this series contains various memory boundary check and
sanity check of on-disk consistency"
* tag 'f2fs-for-v5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (40 commits)
f2fs: fix to avoid accessing xattr across the boundary
f2fs: fix to avoid potential race on sbi->unusable_block_count access/update
f2fs: add tracepoint for f2fs_filemap_fault()
f2fs: introduce DATA_GENERIC_ENHANCE
f2fs: fix to handle error in f2fs_disable_checkpoint()
f2fs: remove redundant check in f2fs_file_write_iter()
f2fs: fix to be aware of readonly device in write_checkpoint()
f2fs: fix to skip recovery on readonly device
f2fs: fix to consider multiple device for readonly check
f2fs: relocate chksum_offset for large_nat_bitmap feature
f2fs: allow unfixed f2fs_checkpoint.checksum_offset
f2fs: Replace spaces with tab
f2fs: insert space before the open parenthesis '('
f2fs: allow address pointer number of dnode aligning to specified size
f2fs: introduce f2fs_read_single_page() for cleanup
f2fs: mark is_extension_exist() inline
f2fs: fix to set FI_UPDATE_WRITE correctly
f2fs: fix to avoid panic in f2fs_inplace_write_data()
f2fs: fix to do sanity check on valid block count of segment
f2fs: fix to do sanity check on valid node/block count
...
Use sbi.stat_lock to protect sbi->unusable_block_count accesss/udpate, in
order to avoid potential race on it.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Previously, f2fs_is_valid_blkaddr(, blkaddr, DATA_GENERIC) will check
whether @blkaddr locates in main area or not.
That check is weak, since the block address in range of main area can
point to the address which is not valid in segment info table, and we
can not detect such condition, we may suffer worse corruption as system
continues running.
So this patch introduce DATA_GENERIC_ENHANCE to enhance the sanity check
which trigger SIT bitmap check rather than only range check.
This patch did below changes as wel:
- set SBI_NEED_FSCK in f2fs_is_valid_blkaddr().
- get rid of is_valid_data_blkaddr() to avoid panic if blkaddr is invalid.
- introduce verify_fio_blkaddr() to wrap fio {new,old}_blkaddr validation check.
- spread blkaddr check in:
* f2fs_get_node_info()
* __read_out_blkaddrs()
* f2fs_submit_page_read()
* ra_data_block()
* do_recover_data()
This patch can fix bug reported from bugzilla below:
https://bugzilla.kernel.org/show_bug.cgi?id=203215https://bugzilla.kernel.org/show_bug.cgi?id=203223https://bugzilla.kernel.org/show_bug.cgi?id=203231https://bugzilla.kernel.org/show_bug.cgi?id=203235https://bugzilla.kernel.org/show_bug.cgi?id=203241
= Update by Jaegeuk Kim =
DATA_GENERIC_ENHANCE enhanced to validate block addresses on read/write paths.
But, xfstest/generic/446 compalins some generated kernel messages saying invalid
bitmap was detected when reading a block. The reaons is, when we get the
block addresses from extent_cache, there is no lock to synchronize it from
truncating the blocks in parallel.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
In f2fs_disable_checkpoint(), it needs to detect and propagate error
number returned from f2fs_write_checkpoint().
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
We have already checked flag IOCB_DIRECT in the sanity
check of flag IOCB_NOWAIT, so don't have to check it
again here.
Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
