jbd: Check return value of blkdev_issue_flush()

blkdev_issue_flush() can fail. Make sure the error gets properly propagated.

Signed-off-by: Jan Kara <jack@suse.cz>

diff --git a/fs/jbd/recovery.c b/fs/jbd/recovery.c
index 008bf06..a748fe2 100644 (file)
--- a/fs/jbd/recovery.c
+++ b/fs/jbd/recovery.c
@@ -265,8 +265,11 @@ int journal_recover(journal_t *journal)
        if (!err)
                err = err2;
        /* Flush disk caches to get replayed data on the permanent storage */
-       if (journal->j_flags & JFS_BARRIER)
-               blkdev_issue_flush(journal->j_fs_dev, GFP_KERNEL, NULL);
+       if (journal->j_flags & JFS_BARRIER) {
+               err2 = blkdev_issue_flush(journal->j_fs_dev, GFP_KERNEL, NULL);
+               if (!err)
+                       err = err2;
+       }
 
        return err;
 }