ocfs2: add IO error check in ocfs2_get_sector()

Check for IO error in ocfs2_get_sector().

Signed-off-by: Wengang Wang <wen.gang.wang@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>

diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index 1c3acc4..7ac83a8 100644 (file)
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -1537,6 +1537,13 @@ static int ocfs2_get_sector(struct super_block *sb,
        unlock_buffer(*bh);
        ll_rw_block(READ, 1, bh);
        wait_on_buffer(*bh);
+       if (!buffer_uptodate(*bh)) {
+               mlog_errno(-EIO);
+               brelse(*bh);
+               *bh = NULL;
+               return -EIO;
+       }
+
        return 0;
 }