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xfs: Fix xfs_prepare_shift() range for RT

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BugLink: https://bugs.launchpad.net/bugs/2102266

commit f23660f059470ec7043748da7641e84183c23bc8 upstream.

The RT extent range must be considered in the xfs_flush_unmap_range() call
to stabilize the boundary.

This code change is originally from Dave Chinner.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: John Garry <john.g.garry@oracle.com>
Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>
Signed-off-by: Catherine Hoang <catherine.hoang@oracle.com>
Acked-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Mehmet Basaran <mehmet.basaran@canonical.com>
This commit is contained in:
John Garry
2025-03-14 12:03:09 +09:00
committed by Mehmet Basaran
parent 445220ea2e
commit 51baead509
1 changed files with 6 additions and 4 deletions
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fs/xfs/xfs_bmap_util.c
+6 -4
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@@ -910,7 +910,7 @@ xfs_prepare_shift(
struct xfs_inode *ip,
loff_t offset)
{
struct xfs_mount *mp = ip->i_mount;
unsigned int rounding;
int error;
/*
@@ -928,11 +928,13 @@ xfs_prepare_shift(
* with the full range of the operation. If we don't, a COW writeback
* completion could race with an insert, front merge with the start
* extent (after split) during the shift and corrupt the file. Start
* with the block just prior to the start to stabilize the boundary.
* with the allocation unit just prior to the start to stabilize the
* boundary.
*/
offset = round_down(offset, mp->m_sb.sb_blocksize);
rounding = xfs_inode_alloc_unitsize(ip);
offset = rounddown_64(offset, rounding);
if (offset)
offset -= mp->m_sb.sb_blocksize;
offset -= rounding;
/*
* Writeback and invalidate cache for the remainder of the file as we're