1 files changed, 14 insertions, 0 deletions

diff --git a/fs/ubifs/io.c b/fs/ubifs/io.c
index 3374f91b6709..054363f2b207 100644
--- a/fs/ubifs/io.c
+++ b/fs/ubifs/io.c
@@ -54,6 +54,20 @@
 #include "ubifs.h"
 
 /**
+ * ubifs_ro_mode - switch UBIFS to read read-only mode.
+ * @c: UBIFS file-system description object
+ * @err: error code which is the reason of switching to R/O mode
+ */
+void ubifs_ro_mode(struct ubifs_info *c, int err)
+{
+        if (!c->ro_media) {
+                c->ro_media = 1;
+                ubifs_warn("switched to read-only mode, error %d", err);
+                dbg_dump_stack();
+        }
+}
+
+/**
  * ubifs_check_node - check node.
  * @c: UBIFS file-system description object
  * @buf: node to check