xfs: remove shared supberlock feature checking

We reject any filesystem that is mounted with this feature bit set,
so we don't need to check for it anywhere else. Remove the function
for checking if the feature bit is set and any code that uses it.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jie Liu <jeff.liu@oracle.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/fs/xfs/xfs_sb.c b/fs/xfs/xfs_sb.c
index de16dd558195..c3453b11f563 100644
--- a/fs/xfs/xfs_sb.c
+++ b/fs/xfs/xfs_sb.c
@@ -291,7 +291,8 @@ xfs_mount_validate_sb(
             (sbp->sb_imax_pct > 100 /* zero sb_imax_pct is valid */)    ||
             sbp->sb_dblocks == 0                                        ||
             sbp->sb_dblocks > XFS_MAX_DBLOCKS(sbp)                      ||
-            sbp->sb_dblocks < XFS_MIN_DBLOCKS(sbp))) {
+            sbp->sb_dblocks < XFS_MIN_DBLOCKS(sbp)                      ||
+            sbp->sb_shared_vn != 0)) {
                 xfs_notice(mp, "SB sanity check failed");
                 return XFS_ERROR(EFSCORRUPTED);
         }