From: Christoph Hellwig <hch@lst.de>
To: Ming Lin <mlin@kernel.org>
Cc: Mike Snitzer <snitzer@redhat.com>, Neil Brown <neilb@suse.de>,
Ming Lei <ming.lei@canonical.com>,
dm-devel@redhat.com, Christoph Hellwig <hch@lst.de>,
Alasdair Kergon <agk@redhat.com>,
Lars Ellenberg <drbd-dev@lists.linbit.com>,
Philip Kelleher <pjk1939@linux.vnet.ibm.com>,
Joshua Morris <josh.h.morris@us.ibm.com>,
Christoph Hellwig <hch@infradead.org>,
Kent Overstreet <kent.overstreet@gmail.com>,
Nitin Gupta <ngupta@vflare.org>,
Oleg Drokin <oleg.drokin@intel.com>,
Al Viro <viro@zeniv.linux.org.uk>, Jens Axboe <axboe@kernel.dk>,
Andreas Dilger <andreas.dilger@intel.com>,
Geoff Levand <geoff@infradead.org>, Jiri Kosina <jkosina@suse.cz>,
linux-kernel@vger.kernel.org, Jim Paris <jim@jtan.com>,
Minchan Kim <minchan@kernel.org>, Dongsu Park <dpark@posteo.net>,
drbd-user@lists.linbit.com
Subject: Re: [Drbd-dev] [PATCH v3 01/11] block: make generic_make_request handle arbitrarily sized bios
Date: Wed, 20 May 2015 14:44:18 +0200 [thread overview]
Message-ID: <20150520124418.GA15594@lst.de> (raw)
In-Reply-To: <1430980461-5235-2-git-send-email-mlin@kernel.org>
This needs the patch below for the blk-mq case with multiple queues.
Also I wonder why we really want to push this below ->make_request.
Moving it just outside ->make_request would make the callchain more
obvious and avoid the recursion into the driver.
diff --git a/block/blk-mq.c b/block/blk-mq.c
index e9bbc04..e7fae76 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -1256,6 +1256,8 @@ static void blk_mq_make_request(struct request_queue *q, struct bio *bio)
return;
}
+ blk_queue_split(q, &bio, q->bio_split);
+
rq = blk_mq_map_request(q, bio, &data);
if (unlikely(!rq))
return;
next prev parent reply other threads:[~2015-05-20 12:44 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1430980461-5235-1-git-send-email-mlin@kernel.org>
2015-05-07 6:34 ` [Drbd-dev] [PATCH v3 01/11] block: make generic_make_request handle arbitrarily sized bios Ming Lin
2015-05-18 16:52 ` Jeff Moyer
2015-05-18 17:22 ` Christoph Hellwig
2015-05-22 7:51 ` Ming Lin
2015-05-20 18:30 ` Ming Lin
2015-05-20 18:58 ` Jeff Moyer
2015-05-20 20:18 ` Ming Lin
2015-05-22 17:49 ` Ming Lin
2015-05-20 12:44 ` Christoph Hellwig [this message]
2015-05-20 18:16 ` Ming Lin
2015-05-07 6:34 ` [Drbd-dev] [PATCH v3 08/11] block: kill merge_bvec_fn() completely Ming Lin
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