[XFS] Block mount attempts for filesystems with version 1 directories.
SGI Modid: xfs-linux:xfs-kern:21937a
Signed-off-by: Nathan Scott <nathans@sgi.com>
Signed-off-by: Christoph Hellwig <hch@sgi.com>
diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index b57423c..2ec967d 100644
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -301,6 +301,15 @@
}
/*
+ * Version 1 directory format has never worked on Linux.
+ */
+ if (unlikely(!XFS_SB_VERSION_HASDIRV2(sbp))) {
+ cmn_err(CE_WARN,
+ "XFS: Attempted to mount file system using version 1 directory format");
+ return XFS_ERROR(ENOSYS);
+ }
+
+ /*
* Until this is fixed only page-sized or smaller data blocks work.
*/
if (unlikely(sbp->sb_blocksize > PAGE_SIZE)) {