bcache: deleted code comments for dead code in bch_data_insert_keys()

In request.c:bch_data_insert_keys(), there is code comment for a piece
of dead code. This patch deletes the dead code and its code comment
since they are useless in practice.

Signed-off-by: Coly Li <colyli@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c
index 41adcd1..73478a9 100644 (file)
--- a/drivers/md/bcache/request.c
+++ b/drivers/md/bcache/request.c
@@ -62,18 +62,6 @@ static void bch_data_insert_keys(struct closure *cl)
        struct bkey *replace_key = op->replace ? &op->replace_key : NULL;
        int ret;
 
-       /*
-        * If we're looping, might already be waiting on
-        * another journal write - can't wait on more than one journal write at
-        * a time
-        *
-        * XXX: this looks wrong
-        */
-#if 0
-       while (atomic_read(&s->cl.remaining) & CLOSURE_WAITING)
-               closure_sync(&s->cl);
-#endif
-
        if (!op->replace)
                journal_ref = bch_journal(op->c, &op->insert_keys,
                                          op->flush_journal ? cl : NULL);