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git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
Pull trivial tree update from Jiri Kosina:
"Usual stuff: documentation updates, printk() fixes, etc"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (24 commits)
intel_ips: fix a type in error message
cpufreq: cpufreq-dt: Move newline to end of error message
ps3rom: fix error return code
treewide: fix typo in printk and Kconfig
ARM: dts: bcm63138: change "interupts" to "interrupts"
Replace mentions of "list_struct" to "list_head"
kernel: trace: fix printk message
scsi: mpt2sas: fix ioctl in comment
zbud, zswap: change module author email
clocksource: Fix 'clcoksource' typo in comment
arm: fix wording of "Crotex" in CONFIG_ARCH_EXYNOS3 help
gpio: msm-v1: make boolean argument more obvious
usb: Fix typo in usb-serial-simple.c
PCI: Fix comment typo 'COMFIG_PM_OPS'
powerpc: Fix comment typo 'CONIFG_8xx'
powerpc: Fix comment typos 'CONFiG_ALTIVEC'
clk: st: Spelling s/stucture/structure/
isci: Spelling s/stucture/structure/
usb: gadget: zero: Spelling s/infrastucture/infrastructure/
treewide: Fix company name in module descriptions
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This patch fix spelling typo in printk and Kconfig within
various part of kernel sources.
Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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Pull UBI/UBIFS updates from Artem Bityutskiy:
"This includes the following UBI/UBIFS changes:
- UBI debug messages now include the UBI device number. This change
is responsible for the big diffstat since it touched every
debugging print statement.
- An Xattr bug-fix which fixes SELinux support
- Several error path fixes in UBI/UBIFS"
* tag 'upstream-3.19-rc1' of git://git.infradead.org/linux-ubifs:
UBI: Fix invalid vfree()
UBI: Fix double free after do_sync_erase()
UBIFS: fix a couple bugs in UBIFS xattr length calculation
UBI: vtbl: Use ubi_eba_atomic_leb_change()
UBI: Extend UBI layer debug/messaging capabilities
UBIFS: fix budget leak in error path
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The journal update function did not work for extended attributes properly,
because extended attribute inodes carry the xattr data, and the size of this
data was not taken into account.
Artem: improved commit message, amended the patch a bit.
Signed-off-by: Subodh Nijsure <snijsure@grid-net.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Ben Shelton <ben.shelton@ni.com>
Acked-by: Brad Mouring <brad.mouring@ni.com>
Acked-by: Gratian Crisan <gratian.crisan@ni.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
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We forgot to free the budget in 'write_begin_slow()' when 'do_readpage()'
fails. This patch fixes the issue.
Suggested-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs
Pull xfs update from Dave Chinner:
"There's relatively little change in this update; it is mainly bug
fixes, cleanups and more of the on-going libxfs restructuring and
on-disk format header consolidation work.
Details:
- more on-disk format header consolidation
- move some structures shared with userspace to libxfs
- new per-mount workqueue to fix for deadlocks between nested loop
mounted filesystems
- various bug fixes for ENOSPC, stats, quota off and preallocation
- a bunch of compiler warning fixes for set-but-unused variables
- various code cleanups"
* tag 'xfs-for-linus-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs: (24 commits)
xfs: split metadata and log buffer completion to separate workqueues
xfs: fix set-but-unused warnings
xfs: move type conversion functions to xfs_dir.h
xfs: move ftype conversion functions to libxfs
xfs: lobotomise xfs_trans_read_buf_map()
xfs: active inodes stat is broken
xfs: cleanup xfs_bmse_merge returns
xfs: cleanup xfs_bmse_shift_one goto mess
xfs: fix premature enospc on inode allocation
xfs: overflow in xfs_iomap_eof_align_last_fsb
xfs: fix simple_return.cocci warning in xfs_bmse_shift_one
xfs: fix simple_return.cocci warning in xfs_file_readdir
libxfs: fix simple_return.cocci warnings
xfs: remove unnecessary null checks
xfs: merge xfs_inum.h into xfs_format.h
xfs: move most of xfs_sb.h to xfs_format.h
xfs: merge xfs_ag.h into xfs_format.h
xfs: move acl structures to xfs_format.h
xfs: merge xfs_dinode.h into xfs_format.h
xfs: catch invalid negative blknos in _xfs_buf_find()
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Conflicts:
fs/xfs/xfs_iops.c
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XFS traditionally sends all buffer I/O completion work to a single
workqueue. This includes metadata buffer completion and log buffer
completion. The log buffer completion requires a high priority queue to
prevent stalls due to log forces getting stuck behind other queued work.
Rather than continue to prioritize all buffer I/O completion due to the
needs of log completion, split log buffer completion off to
m_log_workqueue and move the high priority flag from m_buf_workqueue to
m_log_workqueue.
Add a b_ioend_wq wq pointer to xfs_buf to allow completion workqueue
customization on a per-buffer basis. Initialize b_ioend_wq to
m_buf_workqueue by default in the generic buffer I/O submission path.
Finally, override the default wq with the high priority m_log_workqueue
in the log buffer I/O submission path.
Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
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The kernel compile doesn't turn on these checks by default, so it's
only when I do a kernel-user sync that I find that there are lots of
compiler warnings waiting to be fixed. Fix up these set-but-unused
warnings.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>
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These are currently considered private to libxfs, but they are
widely used by the userspace code to decode, walk and check
directory structures. Hence they really form part of the external
API and as such need to bemoved to xfs_dir2.h.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>
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These functions are needed in userspace for repair and mkfs to
do the right thing. Move them to libxfs so they can be easily
shared.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>
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There's a case in that code where it checks for a buffer match in a
transaction where the buffer is not marked done. i.e. trying to
catch a buffer we have locked in the transaction but have not
completed IO on.
The only way we can find a buffer that has not had IO completed on
it is if it had readahead issued on it, but we never do readahead on
buffers that we have already joined into a transaction. Hence this
condition cannot occur, and buffers locked and joined into a
transaction should always be marked done and not under IO.
Remove this code and re-order xfs_trans_read_buf_map() to remove
duplicated IO dispatch and error handling code.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>
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vn_active only ever gets decremented, so it has a very large
negative number. Make it track the inode count we currently have
allocated properly so we can easily track the size of the inode
cache via tools like PCP.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
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Signed-off-by: Dave Chinner <dchinner@redhat.com>
xfs_bmse_merge() has a jump label for return that just returns the
error value. Convert all the code to just return the error directly
and use XFS_WANT_CORRUPTED_RETURN. This also allows the final call
to xfs_bmbt_update() to return directly.
Noticed while reviewing coccinelle return cleanup patches and
wondering why the same return pattern as in xfs_bmse_shift_one()
wasn't picked up by the checker pattern...
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
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xfs_bmse_shift_one() jumps around determining whether to shift or
merge, making the code flow difficult to follow. Clean it up and
use direct error returns (including XFS_WANT_CORRUPTED_RETURN) to
make the code flow better and be easier to read.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
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After growing a filesystem, XFS can fail to allocate inodes even
though there is a large amount of space available in the filesystem
for inodes. The issue is caused by a nearly full allocation group
having enough free space in it to be considered for inode
allocation, but not enough contiguous free space to actually
allocation inodes. This situation results in successful selection
of the AG for allocation, then failure of the allocation resulting
in ENOSPC being reported to the caller.
It is caused by two possible issues. Firstly, we only consider the
lognest free extent and whether it would fit an inode chunk. If the
extent is not correctly aligned, then we can't allocate an inode
chunk in it regardless of the fact that it is large enough. This
tends to be a permanent error until space in the AG is freed.
The second issue is that we don't actually lock the AGI or AGF when
we are doing these checks, and so by the time we get to actually
allocating the inode chunk the space we thought we had in the AG may
have been allocated. This tends to be a spurious error as it
requires a race to trigger. Hence this case is ignored in this patch
as the reported problem is for permanent errors.
The first issue could be addressed by simply taking into account the
alignment when checking the longest extent. This, however, would
prevent allocation in AGs that have aligned, exact sized extents
free. However, this case should be fairly rare compared to the
number of allocations that occur near ENOSPC that would trigger this
condition.
Hence, when selecting the inode AG, take into account the inode
cluster alignment when checking the lognest free extent in the AG.
If we can't find any AGs with a contiguous free space large
enough to be aligned, drop the alignment addition and just try for
an AG that has enough contiguous free space available for an inode
chunk. This won't prevent issues from occurring, but should avoid
situations where other AGs have lots of free space but the selected
AG can't allocate due to alignment constraints.
Reported-by: Arkadiusz Miskiewicz <arekm@maven.pl>
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
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If extsize is set and new_last_fsb is larger than 32 bits, the
roundup to extsize will overflow the align variable. Instead,
combine alignments by rounding stripe size up to extsize.
Signed-off-by: Peter Watkins <treestem@gmail.com>
Reviewed-by: Nathaniel W. Turner <nate@houseofnate.net>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
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fs/xfs/libxfs/xfs_bmap.c:5591:1-6: WARNING: end returns can be simpified
Simplify a trivial if-return sequence. Possibly combine with a
preceding function call.
Generated by: scripts/coccinelle/misc/simple_return.cocci
CC: Brian Foster <bfoster@redhat.com>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
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fs/xfs/xfs_file.c:919:1-6: WARNING: end returns can be simpified and declaration on line 902 can be dropped
Simplify a trivial if-return sequence. Possibly combine with a
preceding function call.
Generated by: scripts/coccinelle/misc/simple_return.cocci
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
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fs/xfs/libxfs/xfs_ialloc.c:1141:1-6: WARNING: end returns can be simpified
Simplify a trivial if-return sequence. Possibly combine with a
preceding function call.
Generated by: scripts/coccinelle/misc/simple_return.cocci
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
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The functions xfs_blkdev_put() and xfs_qm_dqrele() test whether
their argument is NULL and then return immediately. Thus the test
around the call is not needed.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
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Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
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More on-disk format consolidation.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
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More on-disk format consolidation. A few declarations that weren't on-disk
format related move into better suitable spots.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
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Move the on-disk ACL format to xfs_format.h, so that repair can
use the common defintion.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
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More consolidatation for the on-disk format defintions. Note that the
XFS_IS_REALTIME_INODE moves to xfs_linux.h instead as it is not related
to the on disk format, but depends on a CONFIG_ option.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
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Here blkno is a daddr_t, which is a __s64; it's possible to hold
a value which is negative, and thus pass the (blkno >= eofs)
test. Then we try to do a xfs_perag_get() for a ridiculous
agno via xfs_daddr_to_agno(), and bad things happen when that
fails, and returns a null pag which is dereferenced shortly
thereafter.
Found via a user-supplied fuzzed image...
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
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The expectation since the introduction the lazy superblock counters is
that the counters are synced and superblock logged appropriately as part
of the filesystem freeze sequence. This does not occur, however, due to
the logic in xfs_fs_writable() that prevents progress when the fs is in
any state other than SB_UNFROZEN.
While this is a bug, it has not been exposed to date because the last
thing XFS does during freeze is dirty the log. The log recovery process
recalculates the counters from AGI/AGF metadata to ensure everything is
correct. Therefore should a crash occur while an fs is frozen, the
subsequent log recovery puts everything back in order. See the following
commit for reference:
92821e2b [XFS] Lazy Superblock Counters
We might not always want to rely on dirtying the log on a frozen fs.
Modify xfs_log_sbcount() to proceed when the filesystem is freezing but
not once the freeze process has completed. Modify xfs_fs_writable() to
accept the minimum freeze level for which modifications should be
blocked to support various codepaths.
Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
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The error handling in xfs_qm_log_quotaoff() has a couple problems. If
xfs_trans_commit() fails, we fall through to the error block and call
xfs_trans_cancel(). This is incorrect on commit failure. If
xfs_trans_reserve() fails, we jump to the error block, cancel the tp and
restore the superblock qflags to oldsbqflag. However, oldsbqflag has
been initialized to zero and not yet updated from the original flags so
we set the flags to zero.
Fix up the error handling in xfs_qm_log_quotaoff() to not restore flags
if they haven't been modified and not cancel the tp on commit failure.
Remove the flag restore code altogether because commit error is the only
failure condition and we don't know whether the transaction made it to
disk.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
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There's no need to store a full struct xfs_trans_res on the stack in
xfs_create() and copy the fields. Use a pointer to the appropriate
structures embedded in the xfs_mount.
Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>
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The xfslogd workqueue is a global, single-job workqueue for buffer ioend
processing. This means we allow for a single work item at a time for all
possible XFS mounts on a system. fsstress testing in loopback XFS over
XFS configurations has reproduced xfslogd deadlocks due to the single
threaded nature of the queue and dependencies introduced between the
separate XFS instances by online discard (-o discard).
Discard over a loopback device converts the discard request to a hole
punch (fallocate) on the underlying file. Online discard requests are
issued synchronously and from xfslogd context in XFS, hence the xfslogd
workqueue is blocked in the upper fs waiting on a hole punch request to
be servied in the lower fs. If the lower fs issues I/O that depends on
xfslogd to complete, both filesystems end up hung indefinitely. This is
reproduced reliabily by generic/013 on XFS->loop->XFS test devices with
the '-o discard' mount option.
Further, docker implementations appear to use this kind of configuration
for container instance filesystems by default (container fs->dm->
loop->base fs) and therefore are subject to this deadlock when running
on XFS.
Replace the global xfslogd workqueue with a per-mount variant. This
guarantees each mount access to a single worker and prevents deadlocks
due to inter-fs dependencies introduced by discard. Since the queue is
only responsible for buffer iodone processing at this point in time,
rename xfslogd to xfs-buf.
Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 updates from Ted Ts'o:
"Lots of bugs fixes, including Zheng and Jan's extent status shrinker
fixes, which should improve CPU utilization and potential soft lockups
under heavy memory pressure, and Eric Whitney's bigalloc fixes"
* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (26 commits)
ext4: ext4_da_convert_inline_data_to_extent drop locked page after error
ext4: fix suboptimal seek_{data,hole} extents traversial
ext4: ext4_inline_data_fiemap should respect callers argument
ext4: prevent fsreentrance deadlock for inline_data
ext4: forbid journal_async_commit in data=ordered mode
jbd2: remove unnecessary NULL check before iput()
ext4: Remove an unnecessary check for NULL before iput()
ext4: remove unneeded code in ext4_unlink
ext4: don't count external journal blocks as overhead
ext4: remove never taken branch from ext4_ext_shift_path_extents()
ext4: create nojournal_checksum mount option
ext4: update comments regarding ext4_delete_inode()
ext4: cleanup GFP flags inside resize path
ext4: introduce aging to extent status tree
ext4: cleanup flag definitions for extent status tree
ext4: limit number of scanned extents in status tree shrinker
ext4: move handling of list of shrinkable inodes into extent status code
ext4: change LRU to round-robin in extent status tree shrinker
ext4: cache extent hole in extent status tree for ext4_da_map_blocks()
ext4: fix block reservation for bigalloc filesystems
...
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Testcase:
xfstests generic/270
MKFS_OPTIONS="-q -I 256 -O inline_data,64bit"
Call Trace:
[<ffffffff81144c76>] lock_page+0x35/0x39 -------> DEADLOCK
[<ffffffff81145260>] pagecache_get_page+0x65/0x15a
[<ffffffff811507fc>] truncate_inode_pages_range+0x1db/0x45c
[<ffffffff8120ea63>] ? ext4_da_get_block_prep+0x439/0x4b6
[<ffffffff811b29b7>] ? __block_write_begin+0x284/0x29c
[<ffffffff8120e62a>] ? ext4_change_inode_journal_flag+0x16b/0x16b
[<ffffffff81150af0>] truncate_inode_pages+0x12/0x14
[<ffffffff81247cb4>] ext4_truncate_failed_write+0x19/0x25
[<ffffffff812488cf>] ext4_da_write_inline_data_begin+0x196/0x31c
[<ffffffff81210dad>] ext4_da_write_begin+0x189/0x302
[<ffffffff810c07ac>] ? trace_hardirqs_on+0xd/0xf
[<ffffffff810ddd13>] ? read_seqcount_begin.clone.1+0x9f/0xcc
[<ffffffff8114309d>] generic_perform_write+0xc7/0x1c6
[<ffffffff810c040e>] ? mark_held_locks+0x59/0x77
[<ffffffff811445d1>] __generic_file_write_iter+0x17f/0x1c5
[<ffffffff8120726b>] ext4_file_write_iter+0x2a5/0x354
[<ffffffff81185656>] ? file_start_write+0x2a/0x2c
[<ffffffff8107bcdb>] ? bad_area_nosemaphore+0x13/0x15
[<ffffffff811858ce>] new_sync_write+0x8a/0xb2
[<ffffffff81186e7b>] vfs_write+0xb5/0x14d
[<ffffffff81186ffb>] SyS_write+0x5c/0x8c
[<ffffffff816f2529>] system_call_fastpath+0x12/0x17
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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It is ridiculous practice to scan inode block by block, this technique
applicable only for old indirect files. This takes significant amount
of time for really large files. Let's reuse ext4_fiemap which already
traverse inode-tree in most optimal meaner.
TESTCASE:
ftruncate64(fd, 0);
ftruncate64(fd, 1ULL << 40);
/* lseek will spin very long time */
lseek64(fd, 0, SEEK_DATA);
lseek64(fd, 0, SEEK_HOLE);
Original report: https://lkml.org/lkml/2014/10/16/620
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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Currently ext4_inline_data_fiemap ignores requested arguments (start
and len) which may lead endless loop if start != 0. Also fix incorrect
extent length determination.
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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ext4_da_convert_inline_data_to_extent() invokes
grab_cache_page_write_begin(). grab_cache_page_write_begin performs
memory allocation, so fs-reentrance should be prohibited because we
are inside journal transaction.
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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Option journal_async_commit breaks gurantees of data=ordered mode as it
sends only a single cache flush after writing a transaction commit
block. Thus even though the transaction including the commit block is
fully stored on persistent storage, file data may still linger in drives
caches and will be lost on power failure. Since all checksums match on
journal recovery, we replay the transaction thus possibly exposing stale
user data.
To fix this data exposure issue, remove the possibility to use
journal_async_commit in data=ordered mode.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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The iput() function tests whether its argument is NULL and then
returns immediately. Thus the test around the call is not needed.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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Setting retval to zero is not needed in ext4_unlink.
Remove unneeded code.
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Ashish Sangwan <a.sangwan@samsung.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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This was fixed for ext3 with:
e6d8fb3 ext3: Count internal journal as bsddf overhead in ext3_statfs
but was never fixed for ext4.
With a large external journal and no used disk blocks, df comes
out negative without this, as journal blocks are added to the
overhead & subtracted from used blocks unconditionally.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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path[depth].p_hdr can never be NULL for a path passed to us (and even if
it could, EXT_LAST_EXTENT() would make something != NULL from it). So
just remove the branch.
Coverity-id: 1196498
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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Create a mount option to disable journal checksumming (because the
metadata_csum feature turns it on by default now), and fix remount not
to allow changing the journal checksumming option, since changing the
mount options has no effect on the journal.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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ext4_delete_inode() has been renamed for a long time, update
comments for this.
Signed-off-by: Wang Shilong <wshilong@ddn.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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We must use GFP_NOFS instead GFP_KERNEL inside ext4_mb_add_groupinfo
and ext4_calculate_overhead() because they are called from inside a
journal transaction. Call trace:
ioctl
->ext4_group_add
->journal_start
->ext4_setup_new_descs
->ext4_mb_add_groupinfo -> GFP_KERNEL
->ext4_flex_group_add
->ext4_update_super
->ext4_calculate_overhead -> GFP_KERNEL
->journal_stop
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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Introduce a simple aging to extent status tree. Each extent has a
REFERENCED bit which gets set when the extent is used. Shrinker then
skips entries with referenced bit set and clears the bit. Thus
frequently used extents have higher chances of staying in memory.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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