| Age | Commit message (Collapse) | Author | Files | Lines |
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Functions called by this function cannot fail, so get rid of the return
and error checking.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
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Since xchk_ag_read_headers initializes fields in struct xchk_ag, we
might as well set the AG number and save the callers the trouble.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
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If scrub observes cross-referencing errors while scanning a data
structure, mark the data structure sick. There's /something/
inconsistent, even if we can't really tell what it is.
Fixes: 4860a05d2475 ("xfs: scrub/repair should update filesystem metadata health")
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
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If a scrubber cannot complete its check and signals an incomplete check,
we must bail out immediately without updating health status, trying a
repair, etc. because our scan is incomplete and we therefore do not know
much more.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
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When xchk_quota_item figures out that it needs to terminate the scrub
operation, it needs to return some error code to abort the loop, but
instead it returns zero and the loop keeps running. Fix this by making
it use ECANCELED, and fix the other loop bailout condition check at the
bottom too.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
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If we can't read the AGF header, we never actually set a value for
freelen and usedlen. These two variables are used to make the worst
case estimate of btree size, so it's safe to set them to the AG size as
a fallback.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
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Shorten the names of the two functions that start and stop block
preallocation garbage collection and move them up to the other blockgc
functions.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
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We don't yet support dax on reflinked files, but that is in the works.
Further, having the flag set does not automatically mean that the inode
is actually "in the CPU direct access state," which depends on several
other conditions in addition to the flag being set.
As such, we should not catch this as corruption in the verifier - simply
not actually enabling S_DAX on reflinked files is enough for now.
Fixes: 4f435ebe7d04 ("xfs: don't mix reflink and DAX mode for now")
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
[darrick: fix the scrubber too]
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
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Since *init_cursor() can always return a valid cursor, the NULL check
in caller is unneeded. So clean them up.
This also keeps the behavior consistent with other callers.
Signed-off-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Reviewed-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>
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Refactor all the open-coded validation of file block ranges into a
single helper, and teach the bmap scrubber to check the ranges.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
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Refactor all the open-coded validation of realtime device extents into a
single helper.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
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Refactor all the open-coded validation of non-static data device extents
into a single helper.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
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It's possible that xfs_iget can return EINVAL for inodes that the inobt
thinks are free, or ENOENT for inodes that look free. If this is the
case, mark the directory corrupt immediately when we check ftype. Note
that we already check the ftype of the '.' and '..' entries, so we
can skip the iget part since we already know the inode type for '.' and
we have a separate parent pointer scrubber for '..'.
Fixes: a5c46e5e8912 ("xfs: scrub directory metadata")
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
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xfs_iget can return -ENOENT for a file that the inobt thinks is
allocated but has zeroed mode. This currently causes scrub to exit
with an operational error instead of flagging this as a corruption. The
end result is that scrub mistakenly reports the ENOENT to the user
instead of "directory parent pointer corrupt" like we do for EINVAL.
Fixes: 5927268f5a04 ("xfs: flag inode corruption if parent ptr doesn't get us a real inode")
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
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Teach the directory scrubber to check all the bestfree entries,
including the null ones. We want to be able to detect the case where
the entry is null but there actually /is/ a directory data block.
Found by fuzzing lbests[0] = ones in xfs/391.
Fixes: df481968f33b ("xfs: scrub directory freespace")
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
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We always know the correct state of the rmap record flags (attr, bmbt,
unwritten) so check them by direct comparison.
Fixes: d852657ccfc0 ("xfs: cross-reference reverse-mapping btree")
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
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The comment and logic in xchk_btree_check_minrecs for dealing with
inode-rooted btrees isn't quite correct. While the direct children of
the inode root are allowed to have fewer records than what would
normally be allowed for a regular ondisk btree block, this is only true
if there is only one child block and the number of records don't fit in
the inode root.
Fixes: 08a3a692ef58 ("xfs: btree scrub should check minrecs")
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
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Fix some serious WTF in the reference count scrubber's rmap fragment
processing. The code comment says that this loop is supposed to move
all fragment records starting at or before bno onto the worklist, but
there's no obvious reason why nr (the number of items added) should
increment starting from 1, and breaking the loop when we've added the
target number seems dubious since we could have more rmap fragments that
should have been added to the worklist.
This seems to manifest in xfs/411 when adding one to the refcount field.
Fixes: dbde19da9637 ("xfs: cross-reference the rmapbt data with the refcountbt")
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
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When the bmbt scrubber is looking up rmap extents, we need to set the
extent flags from the bmbt record fully. This will matter once we fix
the rmap btree comparison functions to check those flags correctly.
Fixes: d852657ccfc0 ("xfs: cross-reference reverse-mapping btree")
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
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The kernel has always allowed directories to have the rtinherit flag
set, even if there is no rt device, so this check is wrong.
Fixes: 80e4e1268802 ("xfs: scrub inodes")
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
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When xchk_da_btree_block is loading a non-root dabtree block, we know
that the parent block had to have a (hashval, address) pointer to the
block that we just loaded. Check that the hashval in the parent matches
the block we just loaded.
This was found by fuzzing nbtree[3].hashval = ones in xfs/394.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
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This patch aims to replace kmem_zalloc_large() with global kernel memory
API. So, all its callers are now using kvzalloc() directly, so kmalloc()
fallsback to vmalloc() automatically.
Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
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Redesign the ondisk inode timestamps to be a simple unsigned 64-bit
counter of nanoseconds since 14 Dec 1901 (i.e. the minimum time in the
32-bit unix time epoch). This enables us to handle dates up to 2486,
which solves the y2038 problem.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Gao Xiang <hsiangkao@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
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Redefine xfs_timestamp_t as a __be64 typedef in preparation for the
bigtime functionality. Preserve the legacy structure format so that we
can let the compiler take care of masking and shifting.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Gao Xiang <hsiangkao@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
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Add the necessary bits to the online repair code to support logging the
inode btree counters when rebuilding the btrees, and to support fixing
the counters when rebuilding the AGI.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
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Add the necessary bits to the online scrub code to check the inode btree
counters when enabled.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
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Every call to xfs_da_state_alloc() also requires setting up state->args
and state->mp
Change xfs_da_state_alloc() to receive an xfs_da_args_t as argument and
return a xfs_da_state_t with both args and mp already set.
Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
[darrick: reduce struct typedef usage]
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
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Create a new type (xfs_dqtype_t) to represent the type of an incore
dquot (user, group, project, or none). Rename the incore dquot's
dq_flags field to q_type.
This allows us to replace all the "uint type" arguments to the quota
functions with "xfs_dqtype_t type", to make it obvious when we're
passing a quota type argument into a function.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
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We're going to split up the incore dquot state flags from the ondisk
dquot flags (eventually renaming this "type") so start by renaming the
three flags and the bitmask that are going to participate in this.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
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Now that we've stopped using qcore entirely, drop it from the incore
dquot.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
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Add counter fields to the incore dquot, and use that instead of the ones
in qcore. This eliminates a bunch of endian conversions and will
eventually allow us to remove qcore entirely.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Allison Collins <allison.henderson@oracle.com>
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Add limits fields in the incore dquot, and use that instead of the ones
in qcore. This eliminates a bunch of endian conversions and will
eventually allow us to remove qcore entirely.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Allison Collins <allison.henderson@oracle.com>
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Add a dquot id field to the incore dquot, and use that instead of the
one in qcore. This eliminates a bunch of endian conversions and will
eventually allow us to remove qcore entirely.
We also rearrange the start of xfs_dquot to remove padding holes, saving
8 bytes.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Allison Collins <allison.henderson@oracle.com>
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Make sure the rtbitmap is large enough to store the entire bitmap.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Allison Collins <allison.henderson@oracle.com>
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Ensure that the realtime bitmap file is backed entirely by written
extents. No holes, no unwritten blocks, etc.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Allison Collins <allison.henderson@oracle.com>
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The data fork scrubber calls filemap_write_and_wait to flush dirty pages
and delalloc reservations out to disk prior to checking the data fork's
extent mappings. Unfortunately, this means that scrub can consume the
EIO/ENOSPC errors that would otherwise have stayed around in the address
space until (we hope) the writer application calls fsync to persist data
and collect errors. The end result is that programs that wrote to a
file might never see the error code and proceed as if nothing were
wrong.
xfs_scrub is not in a position to notify file writers about the
writeback failure, and it's only here to check metadata, not file
contents. Therefore, if writeback fails, we should stuff the error code
back into the address space so that an fsync by the writer application
can pick that up.
Fixes: 99d9d8d05da2 ("xfs: scrub inode block mappings")
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
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Both the data and attr fork have a format that is stored in the legacy
idinode. Move it into the xfs_ifork structure instead, where it uses
up padding.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
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There are there are three extents counters per inode, one for each of
the forks. Two are in the legacy icdinode and one is directly in
struct xfs_inode. Switch to a single counter in the xfs_ifork structure
where it uses up padding at the end of the structure. This simplifies
various bits of code that just wants the number of extents counter and
can now directly dereference it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Chandan Babu R <chandanrlinux@gmail.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>
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XFS_IFORK_Q is supposed to be a predicate, not a function returning a
value. Its usage is in xchk_bmap_check_rmaps is incorrect, but that
function only cares about whether or not the "size" of the data is zero
or not. Convert that logic to use a proper boolean, and teach the
caller to skip the call entirely if the end result would be that we'd do
nothing anyway. This avoids a crash later in this series.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
[hch: generalized the NULL ifor check]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
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iget_flags is unused in xfs_imap_to_bp(). Remove the parameter and
fix up the callers.
Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Allison Collins <allison.henderson@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
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I noticed that fsfreeze can take a very long time to freeze an XFS if
there happens to be a GETFSMAP caller running in the background. I also
happened to notice the following in dmesg:
------------[ cut here ]------------
WARNING: CPU: 2 PID: 43492 at fs/xfs/xfs_super.c:853 xfs_quiesce_attr+0x83/0x90 [xfs]
Modules linked in: xfs libcrc32c ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4 ip_set_hash_ip ip_set_hash_net xt_tcpudp xt_set ip_set_hash_mac ip_set nfnetlink ip6table_filter ip6_tables bfq iptable_filter sch_fq_codel ip_tables x_tables nfsv4 af_packet [last unloaded: xfs]
CPU: 2 PID: 43492 Comm: xfs_io Not tainted 5.6.0-rc4-djw #rc4
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.10.2-1ubuntu1 04/01/2014
RIP: 0010:xfs_quiesce_attr+0x83/0x90 [xfs]
Code: 7c 07 00 00 85 c0 75 22 48 89 df 5b e9 96 c1 00 00 48 c7 c6 b0 2d 38 a0 48 89 df e8 57 64 ff ff 8b 83 7c 07 00 00 85 c0 74 de <0f> 0b 48 89 df 5b e9 72 c1 00 00 66 90 0f 1f 44 00 00 41 55 41 54
RSP: 0018:ffffc900030f3e28 EFLAGS: 00010202
RAX: 0000000000000001 RBX: ffff88802ac54000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff81e4a6f0 RDI: 00000000ffffffff
RBP: ffff88807859f070 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000010 R12: 0000000000000000
R13: ffff88807859f388 R14: ffff88807859f4b8 R15: ffff88807859f5e8
FS: 00007fad1c6c0fc0(0000) GS:ffff88807e000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0c7d237000 CR3: 0000000077f01003 CR4: 00000000001606a0
Call Trace:
xfs_fs_freeze+0x25/0x40 [xfs]
freeze_super+0xc8/0x180
do_vfs_ioctl+0x70b/0x750
? __fget_files+0x135/0x210
ksys_ioctl+0x3a/0xb0
__x64_sys_ioctl+0x16/0x20
do_syscall_64+0x50/0x1a0
entry_SYSCALL_64_after_hwframe+0x49/0xbe
These two things appear to be related. The assertion trips when another
thread initiates a fsmap request (which uses an empty transaction) after
the freezer waited for m_active_trans to hit zero but before the the
freezer executes the WARN_ON just prior to calling xfs_log_quiesce.
The lengthy delays in freezing happen because the freezer calls
xfs_wait_buftarg to clean out the buffer lru list. Meanwhile, the
GETFSMAP caller is continuing to grab and release buffers, which means
that it can take a very long time for the buffer lru list to empty out.
We fix both of these races by calling sb_start_write to obtain freeze
protection while using empty transactions for GETFSMAP and for metadata
scrubbing. The other two users occur during mount, during which time we
cannot fs freeze.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
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When we're checking bestfree information in directory blocks, always
drop the block buffer at the end of the function. We should always
release resources when we're done using them.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
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The dirattr btree checking code uses the altpath substructure of the
dirattr state structure to check the sibling pointers of dir/attr tree
blocks. At the end of sibling checks, xfs_da3_path_shift could have
changed multiple levels of buffer pointers in the altpath structure.
Although we release the leaf level buffer, this isn't enough -- we also
need to release the node buffers that are unique to the altpath.
Not releasing all of the altpath buffers leaves them locked to the
transaction. This is suboptimal because we should release resources
when we don't need them anymore. Fix the function to loop all levels of
the altpath, and fix the return logic so that we always run the loop.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
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Add a xbitmap_hweight helper function so that we can get rid of the
open-coded loop.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
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Shorten the name of xfs_bitmap to xbitmap since the scrub bitmap has
nothing to do with the libxfs bitmap.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
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Remove the xfs_bitmap_destroy call from the end of xrep_reap_extents
because this sort of violates our rule that the function initializing a
structure should destroy it.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
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bc_private.b -> bc_ino conversion via script:
$ sed -i 's/bc_private\.b/bc_ino/g' fs/xfs/*[ch] fs/xfs/*/*[ch]
And then revert the change to the bc_ino #define in
fs/xfs/libxfs/xfs_btree.h manually.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
[darrick: tweak the subject line slightly]
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
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bc_private.a -> bc_ag conversion via script:
`sed -i 's/bc_private\.a/bc_ag/g' fs/xfs/*[ch] fs/xfs/*/*[ch]`
And then revert the change to the bc_ag #define in
fs/xfs/libxfs/xfs_btree.h manually.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
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In xchk_xattr_listent, we attempt to validate the extended attribute
hash structures by performing a attr lookup by (hashed) name. If the
lookup returns ENODATA, that means that the hash information is corrupt.
The _process_error functions don't catch this, so we have to add that
explicitly.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
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In xchk_dir_actor, we attempt to validate the directory hash structures
by performing a directory entry lookup by (hashed) name. If the lookup
returns ENOENT, that means that the hash information is corrupt. The
_process_error functions don't catch this, so we have to add that
explicitly.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
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