@@ -141,10 +141,7 @@ xfs_refcount_get_rec(
if (irec->rc_blockcount == 0 || irec->rc_blockcount > MAXREFCEXTLEN)
goto out_bad_rec;
- /* handle special COW-staging domain */
- if (irec->rc_domain == XFS_REFC_DOMAIN_COW && irec->rc_refcount != 1)
- goto out_bad_rec;
- if (irec->rc_domain == XFS_REFC_DOMAIN_SHARED && irec->rc_refcount < 2)
+ if (!xfs_refcount_check_domain(irec))
goto out_bad_rec;
/* check for valid extent range, including overflow */
@@ -55,6 +55,18 @@ struct xfs_refcount_intent {
xfs_fsblock_t ri_startblock;
};
+/* Check that the refcount is appropriate for the record domain. */
+static inline bool
+xfs_refcount_check_domain(
+ const struct xfs_refcount_irec *irec)
+{
+ if (irec->rc_domain == XFS_REFC_DOMAIN_COW && irec->rc_refcount != 1)
+ return false;
+ if (irec->rc_domain == XFS_REFC_DOMAIN_SHARED && irec->rc_refcount < 2)
+ return false;
+ return true;
+}
+
void xfs_refcount_increase_extent(struct xfs_trans *tp,
struct xfs_bmbt_irec *irec);
void xfs_refcount_decrease_extent(struct xfs_trans *tp,