Merge branch 'xfs-misc-fixes-for-4.5-2' into for-next

[cascardo/linux.git] / fs / xfs / libxfs / xfs_sb.c

diff --git a/fs/xfs/libxfs/xfs_sb.c b/fs/xfs/libxfs/xfs_sb.c
index 4742514..8a53eaa 100644 (file)
--- a/fs/xfs/libxfs/xfs_sb.c
+++ b/fs/xfs/libxfs/xfs_sb.c
@@ -35,6 +35,7 @@
 #include "xfs_bmap_btree.h"
 #include "xfs_alloc_btree.h"
 #include "xfs_ialloc_btree.h"
+#include "xfs_log.h"
 
 /*
  * Physical superblock buffer manipulations. Shared with libxfs in userspace.
@@ -163,6 +164,15 @@ xfs_mount_validate_sb(
 "Filesystem can not be safely mounted by this kernel.");
                        return -EINVAL;
                }
+       } else if (xfs_sb_version_hascrc(sbp)) {
+               /*
+                * We can't read verify the sb LSN because the read verifier is
+                * called before the log is allocated and processed. We know the
+                * log is set up before write verifier (!check_version) calls,
+                * so just check it here.
+                */
+               if (!xfs_log_check_lsn(mp, sbp->sb_lsn))
+                       return -EFSCORRUPTED;
        }
 
        if (xfs_sb_version_has_pquotino(sbp)) {
@@ -669,11 +679,13 @@ xfs_sb_write_verify(
 }
 
 const struct xfs_buf_ops xfs_sb_buf_ops = {
+       .name = "xfs_sb",
        .verify_read = xfs_sb_read_verify,
        .verify_write = xfs_sb_write_verify,
 };
 
 const struct xfs_buf_ops xfs_sb_quiet_buf_ops = {
+       .name = "xfs_sb_quiet",
        .verify_read = xfs_sb_quiet_read_verify,
        .verify_write = xfs_sb_write_verify,
 };