xfs: add CRC checking to dir2 data blocks

[firefly-linux-kernel-4.4.55.git] / fs / xfs / xfs_dir2_format.h

diff --git a/fs/xfs/xfs_dir2_format.h b/fs/xfs/xfs_dir2_format.h
index ec5044a92b7045df9dcb32ab7d75e55961f14011..0ac09502b830096d5b9681f4e16e32f90deede5f 100644 (file)
--- a/fs/xfs/xfs_dir2_format.h
+++ b/fs/xfs/xfs_dir2_format.h
@@ -283,7 +283,8 @@ struct xfs_dir3_data_hdr {
 static inline struct xfs_dir2_data_free *
 xfs_dir3_data_bestfree_p(struct xfs_dir2_data_hdr *hdr)
 {
-       if (hdr->magic == cpu_to_be32(XFS_DIR3_BLOCK_MAGIC)) {
+       if (hdr->magic == cpu_to_be32(XFS_DIR3_DATA_MAGIC) ||
+           hdr->magic == cpu_to_be32(XFS_DIR3_BLOCK_MAGIC)) {
                struct xfs_dir3_data_hdr *hdr3 = (struct xfs_dir3_data_hdr *)hdr;
                return hdr3->best_free;
        }
@@ -345,17 +346,6 @@ xfs_dir2_data_unused_tag_p(struct xfs_dir2_data_unused *dup)
                        be16_to_cpu(dup->length) - sizeof(__be16));
 }
 
-static inline struct xfs_dir2_data_unused *
-xfs_dir3_data_unused_p(struct xfs_dir2_data_hdr *hdr)
-{
-       if (hdr->magic == cpu_to_be32(XFS_DIR3_BLOCK_MAGIC)) {
-               return (struct xfs_dir2_data_unused *)
-                       ((char *)hdr + sizeof(struct xfs_dir3_data_hdr));
-       }
-       return (struct xfs_dir2_data_unused *)
-               ((char *)hdr + sizeof(struct xfs_dir2_data_hdr));
-}
-
 static inline size_t
 xfs_dir3_data_hdr_size(bool dir3)
 {
@@ -379,6 +369,13 @@ xfs_dir3_data_entry_p(struct xfs_dir2_data_hdr *hdr)
                ((char *)hdr + xfs_dir3_data_entry_offset(hdr));
 }
 
+static inline struct xfs_dir2_data_unused *
+xfs_dir3_data_unused_p(struct xfs_dir2_data_hdr *hdr)
+{
+       return (struct xfs_dir2_data_unused *)
+               ((char *)hdr + xfs_dir3_data_entry_offset(hdr));
+}
+
 /*
  * Offsets of . and .. in data space (always block 0)
  */