diff options
| author | Darrick J. Wong <djwong@kernel.org> | 2021-09-23 10:32:06 -0700 |
|---|---|---|
| committer | Darrick J. Wong <djwong@kernel.org> | 2021-10-19 11:45:16 -0700 |
| commit | 0ed5f7356daee74244b02e100b3cc043e886e686 (patch) | |
| tree | 12bc85f663f6be62fff23c583309bcd0bf0c1237 /fs/xfs/libxfs/xfs_fs.h | |
| parent | bc8883eb775dd18d8b84733d8b3a3955b72d103a (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>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Diffstat (limited to 'fs/xfs/libxfs/xfs_fs.h')
| -rw-r--r-- | fs/xfs/libxfs/xfs_fs.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/xfs/libxfs/xfs_fs.h b/fs/xfs/libxfs/xfs_fs.h index bde2b4c64dbe..c43877c8a279 100644 --- a/fs/xfs/libxfs/xfs_fs.h +++ b/fs/xfs/libxfs/xfs_fs.h @@ -268,6 +268,8 @@ typedef struct xfs_fsop_resblks { */ #define XFS_MIN_AG_BYTES (1ULL << 24) /* 16 MB */ #define XFS_MAX_AG_BYTES (1ULL << 40) /* 1 TB */ +#define XFS_MAX_AG_BLOCKS (XFS_MAX_AG_BYTES / XFS_MIN_BLOCKSIZE) +#define XFS_MAX_CRC_AG_BLOCKS (XFS_MAX_AG_BYTES / XFS_MIN_CRC_BLOCKSIZE) /* keep the maximum size under 2^31 by a small amount */ #define XFS_MAX_LOG_BYTES \ |