diff options
| author | Brian Foster <bfoster@redhat.com> | 2020-07-15 18:44:50 -0700 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2020-07-28 20:24:14 -0700 |
| commit | b2a8864728683443f34a9fd33a2b78b860934cc1 (patch) | |
| tree | b9f31c69c3ebf96ef39af35f47afd4c3f79bf0fb /fs/xfs | |
| parent | f376b45e861d8b7b34bf0eceeecfdd00dbe65cde (diff) | |
| download | linux-b2a8864728683443f34a9fd33a2b78b860934cc1.tar.gz linux-b2a8864728683443f34a9fd33a2b78b860934cc1.tar.bz2 linux-b2a8864728683443f34a9fd33a2b78b860934cc1.zip | |
xfs: fix inode allocation block res calculation precedence
The block reservation calculation for inode allocation is supposed
to consist of the blocks required for the inode chunk plus
(maxlevels-1) of the inode btree multiplied by the number of inode
btrees in the fs (2 when finobt is enabled, 1 otherwise).
Instead, the macro returns (ialloc_blocks + 2) due to a precedence
error in the calculation logic. This leads to block reservation
overruns via generic/531 on small block filesystems with finobt
enabled. Add braces to fix the calculation and reserve the
appropriate number of blocks.
Fixes: 9d43b180af67 ("xfs: update inode allocation/free transaction reservations for finobt")
Signed-off-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>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'fs/xfs')
| -rw-r--r-- | fs/xfs/libxfs/xfs_trans_space.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/xfs/libxfs/xfs_trans_space.h b/fs/xfs/libxfs/xfs_trans_space.h index 88221c7a04cc..c6df01a2a158 100644 --- a/fs/xfs/libxfs/xfs_trans_space.h +++ b/fs/xfs/libxfs/xfs_trans_space.h @@ -57,7 +57,7 @@ XFS_DAREMOVE_SPACE_RES(mp, XFS_DATA_FORK) #define XFS_IALLOC_SPACE_RES(mp) \ (M_IGEO(mp)->ialloc_blks + \ - (xfs_sb_version_hasfinobt(&mp->m_sb) ? 2 : 1 * \ + ((xfs_sb_version_hasfinobt(&mp->m_sb) ? 2 : 1) * \ (M_IGEO(mp)->inobt_maxlevels - 1))) /* |