diff options
| author | Darrick J. Wong <djwong@kernel.org> | 2021-09-16 12:27:43 -0700 |
|---|---|---|
| committer | Darrick J. Wong <djwong@kernel.org> | 2021-10-19 11:45:16 -0700 |
| commit | 9ec691205e7d4a11190519df6561a168ae6af3a4 (patch) | |
| tree | b1f20b3caabbd484e34057a0566f0d0325abbe0d /fs/xfs/libxfs/xfs_btree.h | |
| parent | 1b236ad7ba800bc3e9994881a8a453eb8bf5ca0f (diff) | |
xfs: compute the maximum height of the rmap btree when reflink enabled
Instead of assuming that the hardcoded XFS_BTREE_MAXLEVELS value is big
enough to handle the maximally tall rmap btree when all blocks are in
use and maximally shared, let's compute the maximum height assuming the
rmapbt consumes as many blocks as possible.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Chandan Babu R <chandan.babu@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Diffstat (limited to 'fs/xfs/libxfs/xfs_btree.h')
| -rw-r--r-- | fs/xfs/libxfs/xfs_btree.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/xfs/libxfs/xfs_btree.h b/fs/xfs/libxfs/xfs_btree.h index 3bd69fe425a7..e488bfcc1fc0 100644 --- a/fs/xfs/libxfs/xfs_btree.h +++ b/fs/xfs/libxfs/xfs_btree.h @@ -491,6 +491,8 @@ unsigned int xfs_btree_compute_maxlevels(const unsigned int *limits, unsigned long long records); unsigned long long xfs_btree_calc_size(const unsigned int *limits, unsigned long long records); +unsigned int xfs_btree_space_to_height(const unsigned int *limits, + unsigned long long blocks); /* * Return codes for the query range iterator function are 0 to continue |