1 files changed, 2 insertions, 1 deletions

diff --git a/fs/ubifs/master.c b/fs/ubifs/master.c
index 28beaeedadc0..21f47afdacff 100644
--- a/fs/ubifs/master.c
+++ b/fs/ubifs/master.c
@@ -361,7 +361,8 @@ int ubifs_write_master(struct ubifs_info *c)
 {
         int err, lnum, offs, len;
 
-        if (c->ro_media)
+        ubifs_assert(!c->ro_media && !c->ro_mount);
+        if (c->ro_error)
                 return -EROFS;
 
         lnum = UBIFS_MST_LNUM;