[PATCH] ubifs: add update vfs super block infomation when remount to ro mode

[ZhangJieJing]

If some read/write error happens(eg.CRC error), ubifs make self a read
only mode,
but the vfs infomation still not update.
This patch add this also make /proc/mounts update.

Signed-off-by: Zhang Jiejing <kzjeef at gmail.com>
---
 fs/ubifs/io.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/fs/ubifs/io.c b/fs/ubifs/io.c
index 0168271..d33c233 100644
--- a/fs/ubifs/io.c
+++ b/fs/ubifs/io.c
@@ -63,6 +63,7 @@ void ubifs_ro_mode(struct ubifs_info *c, int err)
       if (!c->ro_media) {
               c->ro_media = 1;
               c->no_chk_data_crc = 0;
+              c->vfs_sb->s_flags |= MS_RDONLY;
               ubifs_warn("switched to read-only mode, error %d", err);
               dbg_dump_stack();
       }
--
1.6.3.3