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authorChristoph Hellwig <hch@lst.de>2024-08-27 07:03:21 +0200
committerChandan Babu R <chandanbabu@kernel.org>2024-09-03 10:07:47 +0530
commit90fa22da6d6b41dc17435aff7b800f9ca3c00401 (patch)
treebc4a367116c258848a798c59857aa6b3f66c3e1e /mm
parent866cf1dd3d5cc03e6544a9582ef9c79ecdfc92c0 (diff)
xfs: ensure st_blocks never goes to zero during COW writes
COW writes remove the amount overwritten either directly for delalloc reservations, or in earlier deferred transactions than adding the new amount back in the bmap map transaction. This means st_blocks on an inode where all data is overwritten using the COW path can temporarily show a 0 st_blocks. This can easily be reproduced with the pending zoned device support where all writes use this path and trips the check in generic/615, but could also happen on a reflink file without that. Fix this by temporarily add the pending blocks to be mapped to i_delayed_blks while the item is queued. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions