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| author | Darrick J. Wong <darrick.wong@oracle.com> | 2018-05-09 10:02:01 -0700 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2018-05-15 17:57:05 -0700 |
| commit | 14861c47400b4a1669956d8b027fe4b7855e39f1 (patch) | |
| tree | 43c5f049a512128ed99e054fb94e10fea0b37e1c /fs/xfs/libxfs/xfs_alloc_btree.c | |
| parent | 9d9c90286a74decf11caa9dd625f862ae0257ce0 (diff) | |
| download | linux-14861c47400b4a1669956d8b027fe4b7855e39f1.tar.gz linux-14861c47400b4a1669956d8b027fe4b7855e39f1.tar.bz2 linux-14861c47400b4a1669956d8b027fe4b7855e39f1.zip | |
xfs: add helpers to calculate btree size
Add a bunch of helper functions that calculate the sizes of various
btrees. These will be used to repair btrees and btree headers.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Diffstat (limited to 'fs/xfs/libxfs/xfs_alloc_btree.c')
| -rw-r--r-- | fs/xfs/libxfs/xfs_alloc_btree.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/xfs/libxfs/xfs_alloc_btree.c b/fs/xfs/libxfs/xfs_alloc_btree.c index b451649ba176..18aec7a0e599 100644 --- a/fs/xfs/libxfs/xfs_alloc_btree.c +++ b/fs/xfs/libxfs/xfs_alloc_btree.c @@ -547,3 +547,12 @@ xfs_allocbt_maxrecs( return blocklen / sizeof(xfs_alloc_rec_t); return blocklen / (sizeof(xfs_alloc_key_t) + sizeof(xfs_alloc_ptr_t)); } + +/* Calculate the freespace btree size for some records. */ +xfs_extlen_t +xfs_allocbt_calc_size( + struct xfs_mount *mp, + unsigned long long len) +{ + return xfs_btree_calc_size(mp->m_alloc_mnr, len); +} |