Merge tag 'wireless-drivers-for-davem-2015-12-28' of git://git.kernel.org/pub/scm...

[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..a0b071d 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)) {