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| author | Darrick J. Wong <djwong@kernel.org> | 2021-09-16 12:27:34 -0700 |
|---|---|---|
| committer | Darrick J. Wong <djwong@kernel.org> | 2021-10-19 11:45:15 -0700 |
| commit | b74e15d720d0764345934ebb599a99a077c52533 (patch) | |
| tree | c57f72b02abd7757e6dd30d7a33095d06ec4c2c1 /fs/xfs/xfs_mount.c | |
| parent | 7cb3efb4cfdd4f3eb1f36b0ce39254b848ff2371 (diff) | |
| download | lwn-b74e15d720d0764345934ebb599a99a077c52533.tar.gz lwn-b74e15d720d0764345934ebb599a99a077c52533.zip | |
xfs: compute maximum AG btree height for critical reservation calculation
Compute the actual maximum AG btree height for deciding if a per-AG
block reservation is critically low. This only affects the sanity check
condition, since we /generally/ will trigger on the 10% threshold. This
is a long-winded way of saying that we're removing one more usage of
XFS_BTREE_MAXLEVELS.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Diffstat (limited to 'fs/xfs/xfs_mount.c')
| -rw-r--r-- | fs/xfs/xfs_mount.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c index 06dac09eddbd..359109b6f0d3 100644 --- a/fs/xfs/xfs_mount.c +++ b/fs/xfs/xfs_mount.c @@ -567,6 +567,18 @@ xfs_mount_setup_inode_geom( xfs_ialloc_setup_geometry(mp); } +/* Compute maximum possible height for per-AG btree types for this fs. */ +static inline void +xfs_agbtree_compute_maxlevels( + struct xfs_mount *mp) +{ + unsigned int levels; + + levels = max(mp->m_alloc_maxlevels, M_IGEO(mp)->inobt_maxlevels); + levels = max(levels, mp->m_rmap_maxlevels); + mp->m_agbtree_maxlevels = max(levels, mp->m_refc_maxlevels); +} + /* * This function does the following on an initial mount of a file system: * - reads the superblock from disk and init the mount struct @@ -638,6 +650,8 @@ xfs_mountfs( xfs_rmapbt_compute_maxlevels(mp); xfs_refcountbt_compute_maxlevels(mp); + xfs_agbtree_compute_maxlevels(mp); + /* * Check if sb_agblocks is aligned at stripe boundary. If sb_agblocks * is NOT aligned turn off m_dalign since allocator alignment is within |