From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933598Ab3GZVak (ORCPT ); Fri, 26 Jul 2013 17:30:40 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:50911 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759987Ab3GZUsw (ORCPT ); Fri, 26 Jul 2013 16:48:52 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Kent Overstreet Subject: [ 49/79] bcache: Advertise that flushes are supported Date: Fri, 26 Jul 2013 13:47:39 -0700 Message-Id: <20130726204727.672361489@linuxfoundation.org> X-Mailer: git-send-email 1.8.3.rc0.20.gb99dd2e In-Reply-To: <20130726204721.849052763@linuxfoundation.org> References: <20130726204721.849052763@linuxfoundation.org> User-Agent: quilt/0.60-5.1.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Kent Overstreet commit 54d12f2b4fd0f218590d1490b41a18d0e2328a9a upstream. Whoops - bcache's flush/FUA was mostly correct, but flushes get filtered out unless we say we support them... Signed-off-by: Kent Overstreet Signed-off-by: Greg Kroah-Hartman --- drivers/md/bcache/request.c | 8 +++++++- drivers/md/bcache/super.c | 2 ++ 2 files changed, 9 insertions(+), 1 deletion(-) --- a/drivers/md/bcache/request.c +++ b/drivers/md/bcache/request.c @@ -489,6 +489,12 @@ static void bch_insert_data_loop(struct bch_queue_gc(op->c); } + /* + * Journal writes are marked REQ_FLUSH; if the original write was a + * flush, it'll wait on the journal write. + */ + bio->bi_rw &= ~(REQ_FLUSH|REQ_FUA); + do { unsigned i; struct bkey *k; @@ -716,7 +722,7 @@ static struct search *search_alloc(struc s->task = current; s->orig_bio = bio; s->write = (bio->bi_rw & REQ_WRITE) != 0; - s->op.flush_journal = (bio->bi_rw & REQ_FLUSH) != 0; + s->op.flush_journal = (bio->bi_rw & (REQ_FLUSH|REQ_FUA)) != 0; s->op.skip = (bio->bi_rw & REQ_DISCARD) != 0; s->recoverable = 1; s->start_time = jiffies; --- a/drivers/md/bcache/super.c +++ b/drivers/md/bcache/super.c @@ -781,6 +781,8 @@ static int bcache_device_init(struct bca set_bit(QUEUE_FLAG_NONROT, &d->disk->queue->queue_flags); set_bit(QUEUE_FLAG_DISCARD, &d->disk->queue->queue_flags); + blk_queue_flush(q, REQ_FLUSH|REQ_FUA); + return 0; }