xfs: create block pointer check functions
Create some helper functions to check that a block pointer points
within the filesystem (or AG) and doesn't point at static metadata.
We will use this for scrub.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
diff --git a/fs/xfs/xfs_rtalloc.h b/fs/xfs/xfs_rtalloc.h
index 79defa7..3f30f84 100644
--- a/fs/xfs/xfs_rtalloc.h
+++ b/fs/xfs/xfs_rtalloc.h
@@ -138,6 +138,7 @@ int xfs_rtalloc_query_range(struct xfs_trans *tp,
int xfs_rtalloc_query_all(struct xfs_trans *tp,
xfs_rtalloc_query_range_fn fn,
void *priv);
+bool xfs_verify_rtbno(struct xfs_mount *mp, xfs_rtblock_t rtbno);
#else
# define xfs_rtallocate_extent(t,b,min,max,l,f,p,rb) (ENOSYS)
# define xfs_rtfree_extent(t,b,l) (ENOSYS)
@@ -146,6 +147,7 @@ int xfs_rtalloc_query_all(struct xfs_trans *tp,
# define xfs_rtalloc_query_range(t,l,h,f,p) (ENOSYS)
# define xfs_rtalloc_query_all(t,f,p) (ENOSYS)
# define xfs_rtbuf_get(m,t,b,i,p) (ENOSYS)
+# define xfs_verify_rtbno(m, r) (false)
static inline int /* error */
xfs_rtmount_init(
xfs_mount_t *mp) /* file system mount structure */