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-rw-r--r--fs/xfs/xfs_mount.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index b57423caef9..2ec967d93e5 100644
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -301,6 +301,15 @@ xfs_mount_validate_sb(
}
/*
+ * 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)) {