diff options
| author | Darrick J. Wong <djwong@kernel.org> | 2021-09-23 10:32:06 -0700 |
|---|---|---|
| committer | Darrick J. Wong <djwong@kernel.org> | 2021-10-14 13:11:56 -0700 |
| commit | b30824d98993239c1e1bd4124e458ad1fcbe1f14 (patch) | |
| tree | 87f7982a5ae9c1251fe14bc2aeadba03ebf10b8d /fs/xfs/libxfs/xfs_refcount_btree.h | |
| parent | b0e4563697bc585f272d002ae1c0b3a7b62d1d10 (diff) | |
xfs: compute absolute maximum nlevels for each btree type
Add code for all five btree types so that we can compute the absolute
maximum possible btree height for each btree type. This is a setup for
the next patch, which makes every btree type have its own cursor cache.
The functions are exported so that we can have xfs_db report the
absolute maximum btree heights for each btree type, rather than making
everyone run their own ad-hoc computations.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Diffstat (limited to 'fs/xfs/libxfs/xfs_refcount_btree.h')
| -rw-r--r-- | fs/xfs/libxfs/xfs_refcount_btree.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/xfs/libxfs/xfs_refcount_btree.h b/fs/xfs/libxfs/xfs_refcount_btree.h index bd9ed9e1e41f..d7f7c89cbf35 100644 --- a/fs/xfs/libxfs/xfs_refcount_btree.h +++ b/fs/xfs/libxfs/xfs_refcount_btree.h @@ -65,4 +65,6 @@ extern int xfs_refcountbt_calc_reserves(struct xfs_mount *mp, void xfs_refcountbt_commit_staged_btree(struct xfs_btree_cur *cur, struct xfs_trans *tp, struct xfs_buf *agbp); +unsigned int xfs_refcountbt_maxlevels_ondisk(void); + #endif /* __XFS_REFCOUNT_BTREE_H__ */ |