xfs: export _inobt_btrec_to_irec and _ialloc_cluster_alignment for scrub

Create a function to extract an in-core inobt record from a generic
btree_rec union so that scrub will be able to check inobt records
and check inode block alignment.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>

diff --git a/fs/xfs/libxfs/xfs_ialloc.c b/fs/xfs/libxfs/xfs_ialloc.c
index 1e5ed94..c514fe9 100644 (file)
--- a/fs/xfs/libxfs/xfs_ialloc.c
+++ b/fs/xfs/libxfs/xfs_ialloc.c
@@ -46,7 +46,7 @@
 /*
  * Allocation group level functions.
  */
-static inline int
+int
 xfs_ialloc_cluster_alignment(
        struct xfs_mount        *mp)
 {
@@ -98,24 +98,15 @@ xfs_inobt_update(
        return xfs_btree_update(cur, &rec);
 }
 
-/*
- * Get the data from the pointed-to record.
- */
-int                                    /* error */
-xfs_inobt_get_rec(
-       struct xfs_btree_cur    *cur,   /* btree cursor */
-       xfs_inobt_rec_incore_t  *irec,  /* btree record */
-       int                     *stat)  /* output: success/failure */
+/* Convert on-disk btree record to incore inobt record. */
+void
+xfs_inobt_btrec_to_irec(
+       struct xfs_mount                *mp,
+       union xfs_btree_rec             *rec,
+       struct xfs_inobt_rec_incore     *irec)
 {
-       union xfs_btree_rec     *rec;
-       int                     error;
-
-       error = xfs_btree_get_rec(cur, &rec, stat);
-       if (error || *stat == 0)
-               return error;
-
        irec->ir_startino = be32_to_cpu(rec->inobt.ir_startino);
-       if (xfs_sb_version_hassparseinodes(&cur->bc_mp->m_sb)) {
+       if (xfs_sb_version_hassparseinodes(&mp->m_sb)) {
                irec->ir_holemask = be16_to_cpu(rec->inobt.ir_u.sp.ir_holemask);
                irec->ir_count = rec->inobt.ir_u.sp.ir_count;
                irec->ir_freecount = rec->inobt.ir_u.sp.ir_freecount;
@@ -130,6 +121,25 @@ xfs_inobt_get_rec(
                                be32_to_cpu(rec->inobt.ir_u.f.ir_freecount);
        }
        irec->ir_free = be64_to_cpu(rec->inobt.ir_free);
+}
+
+/*
+ * Get the data from the pointed-to record.
+ */
+int
+xfs_inobt_get_rec(
+       struct xfs_btree_cur            *cur,
+       struct xfs_inobt_rec_incore     *irec,
+       int                             *stat)
+{
+       union xfs_btree_rec             *rec;
+       int                             error;
+
+       error = xfs_btree_get_rec(cur, &rec, stat);
+       if (error || *stat == 0)
+               return error;
+
+       xfs_inobt_btrec_to_irec(cur->bc_mp, rec, irec);
 
        return 0;
 }

diff --git a/fs/xfs/libxfs/xfs_ialloc.h b/fs/xfs/libxfs/xfs_ialloc.h
index 0bb8966..b32cfb5 100644 (file)
--- a/fs/xfs/libxfs/xfs_ialloc.h
+++ b/fs/xfs/libxfs/xfs_ialloc.h
@@ -168,5 +168,10 @@ int xfs_ialloc_inode_init(struct xfs_mount *mp, struct xfs_trans *tp,
 int xfs_read_agi(struct xfs_mount *mp, struct xfs_trans *tp,
                xfs_agnumber_t agno, struct xfs_buf **bpp);
 
+union xfs_btree_rec;
+void xfs_inobt_btrec_to_irec(struct xfs_mount *mp, union xfs_btree_rec *rec,
+               struct xfs_inobt_rec_incore *irec);
+
+int xfs_ialloc_cluster_alignment(struct xfs_mount *mp);
 
 #endif /* __XFS_IALLOC_H__ */