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xfs: only log freed extents for the current RTG in zoned growfs

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Otherwise a power fail or crash during growfs could lead to an
elevated sb_rblocks counter.

Note that the step function is much simpler compared to the classic RT
allocator as zoned RT sections must be aligned to real time group
boundaries.

Fixes: 01b71e64bb ("xfs: support growfs on zoned file systems")
Cc: <stable@vger.kernel.org> # v6.15
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
This commit is contained in:
Christoph Hellwig
2026-06-10 07:07:21 +02:00
committed by Carlos Maiolino
parent ae3692c7f4
commit 44cccefe65
1 changed files with 4 additions and 4 deletions
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8
fs/xfs/xfs_rtalloc.c
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@@ -890,8 +890,7 @@ xfs_growfs_rt_sb_fields(
static int
xfs_growfs_rt_zoned(
struct xfs_rtgroup *rtg,
xfs_rfsblock_t nrblocks)
struct xfs_rtgroup *rtg)
{
struct xfs_mount *mp = rtg_mount(rtg);
struct xfs_mount *nmp;
@@ -903,7 +902,8 @@ xfs_growfs_rt_zoned(
* Calculate new sb and mount fields for this round. Also ensure the
* rtg_extents value is uptodate as the rtbitmap code relies on it.
*/
nmp = xfs_growfs_rt_alloc_fake_mount(mp, nrblocks,
nmp = xfs_growfs_rt_alloc_fake_mount(mp,
xfs_rtgs_to_rfsbs(mp, rtg_rgno(rtg) + 1),
mp->m_sb.sb_rextsize);
if (!nmp)
return -ENOMEM;
@@ -1226,7 +1226,7 @@ xfs_growfs_rtg(
}
if (xfs_has_zoned(mp)) {
error = xfs_growfs_rt_zoned(rtg, nrblocks);
error = xfs_growfs_rt_zoned(rtg);
goto out_rele;
}