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xfs: add scrub cross-referencing helpers for the refcount btrees

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Add a couple of functions to the refcount btrees that will be used
to cross-reference metadata against the refcountbt.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
This commit is contained in:
Darrick J. Wong
2018-01-16 18:52:14 -08:00
parent ed7c52d4bf
commit 49db55eca5
2 changed files with 22 additions and 0 deletions
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3
fs/xfs/libxfs/xfs_refcount.h
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@@ -83,4 +83,7 @@ static inline xfs_fileoff_t xfs_refcount_max_unmap(int log_res)
return (log_res * 3 / 4) / XFS_REFCOUNT_ITEM_OVERHEAD;
}
extern int xfs_refcount_has_record(struct xfs_btree_cur *cur,
xfs_agblock_t bno, xfs_extlen_t len, bool *exists);
#endif /* __XFS_REFCOUNT_H__ */