diff options
Diffstat (limited to 'fs/xfs/xfs_buf.c')
| -rw-r--r-- | fs/xfs/xfs_buf.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c index 52a382b8cbce..548344e25128 100644 --- a/fs/xfs/xfs_buf.c +++ b/fs/xfs/xfs_buf.c @@ -2213,7 +2213,7 @@ void xfs_buf_set_ref(struct xfs_buf *bp, int lru_ref) bool xfs_verify_magic( struct xfs_buf *bp, - uint32_t dmagic) + __be32 dmagic) { struct xfs_mount *mp = bp->b_target->bt_mount; int idx; @@ -2223,3 +2223,21 @@ xfs_verify_magic( return false; return dmagic == bp->b_ops->magic[idx]; } +/* + * Verify an on-disk magic value against the magic value specified in the + * verifier structure. The verifier magic is in disk byte order so the caller is + * expected to pass the value directly from disk. + */ +bool +xfs_verify_magic16( + struct xfs_buf *bp, + __be16 dmagic) +{ + struct xfs_mount *mp = bp->b_target->bt_mount; + int idx; + + idx = xfs_sb_version_hascrc(&mp->m_sb); + if (unlikely(WARN_ON(!bp->b_ops || !bp->b_ops->magic16[idx]))) + return false; + return dmagic == bp->b_ops->magic16[idx]; +} |