From: Pavel Begunkov <asml.silence@gmail.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: linux-block@vger.kernel.org, Jens Axboe <axboe@kernel.dk>
Subject: Re: [PATCH 11/16] block: add optimised version bio_set_dev()
Date: Wed, 20 Oct 2021 13:29:57 +0100 [thread overview]
Message-ID: <63ec3431-ac17-be27-d05b-bb519602de81@gmail.com> (raw)
In-Reply-To: <YW+1OxkLRboWQNm4@infradead.org>
On 10/20/21 07:20, Christoph Hellwig wrote:
> On Tue, Oct 19, 2021 at 10:24:20PM +0100, Pavel Begunkov wrote:
>> If a bio was just allocated its flags should be zero and there is no
>> need to clear them. Add __bio_set_dev(), which is faster and doesn't
>> care about clering flags.
>
> This is entirely the wrong way around. Please add a new bio_reset_dev
> for the no more than about two hand full callers that actually had
> a device set and just optimize bio_set_dev.
makes sense, thanks
--
Pavel Begunkov
next prev parent reply other threads:[~2021-10-20 12:29 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-19 21:24 [PATCH 00/16] block optimisation round Pavel Begunkov
2021-10-19 21:24 ` [PATCH 01/16] block: turn macro helpers into inline functions Pavel Begunkov
2021-10-20 6:09 ` Christoph Hellwig
2021-10-19 21:24 ` [PATCH 02/16] block: convert leftovers to bdev_get_queue Pavel Begunkov
2021-10-19 22:34 ` Chaitanya Kulkarni
2021-10-19 21:24 ` [PATCH 03/16] block: optimise req_bio_endio() Pavel Begunkov
2021-10-20 6:11 ` Christoph Hellwig
2021-10-22 9:58 ` Shinichiro Kawasaki
2021-10-22 10:58 ` Pavel Begunkov
2021-10-19 21:24 ` [PATCH 04/16] block: don't bloat enter_queue with percpu_ref Pavel Begunkov
2021-10-19 22:32 ` Chaitanya Kulkarni
2021-10-20 6:12 ` Christoph Hellwig
2021-10-20 12:08 ` Pavel Begunkov
2021-10-19 21:24 ` [PATCH 05/16] block: inline a part of bio_release_pages() Pavel Begunkov
2021-10-20 6:13 ` Christoph Hellwig
2021-10-20 12:19 ` Pavel Begunkov
2021-10-20 14:15 ` Jens Axboe
2021-10-20 17:29 ` Christoph Hellwig
2021-10-19 21:24 ` [PATCH 06/16] block: clean up blk_mq_submit_bio() merging Pavel Begunkov
2021-10-20 6:16 ` Christoph Hellwig
2021-10-20 12:20 ` Pavel Begunkov
2021-10-19 21:24 ` [PATCH 07/16] blocK: move plug flush functions to blk-mq.c Pavel Begunkov
2021-10-19 22:34 ` Chaitanya Kulkarni
2021-10-20 6:17 ` Christoph Hellwig
2021-10-20 12:23 ` Pavel Begunkov
2021-10-20 12:37 ` Christoph Hellwig
2021-10-20 13:18 ` Pavel Begunkov
2021-10-19 21:24 ` [PATCH 08/16] block: optimise blk_flush_plug_list Pavel Begunkov
2021-10-20 6:29 ` Christoph Hellwig
2021-10-20 12:26 ` Pavel Begunkov
2021-10-19 21:24 ` [PATCH 09/16] block: optimise boundary blkdev_read_iter's checks Pavel Begunkov
2021-10-20 6:29 ` Christoph Hellwig
2021-10-19 21:24 ` [PATCH 10/16] block: optimise blkdev_bio_end_io() Pavel Begunkov
2021-10-20 6:30 ` Christoph Hellwig
2021-10-20 12:29 ` Pavel Begunkov
2021-10-19 21:24 ` [PATCH 11/16] block: add optimised version bio_set_dev() Pavel Begunkov
2021-10-19 22:36 ` Chaitanya Kulkarni
2021-10-20 6:20 ` Christoph Hellwig
2021-10-20 12:29 ` Pavel Begunkov [this message]
2021-10-19 21:24 ` [PATCH 12/16] block: add single bio async direct IO helper Pavel Begunkov
2021-10-20 6:36 ` Christoph Hellwig
2021-10-20 12:35 ` Pavel Begunkov
2021-10-19 21:24 ` [PATCH 13/16] block: add async version of bio_set_polled Pavel Begunkov
2021-10-20 6:37 ` Christoph Hellwig
2021-10-20 12:58 ` Pavel Begunkov
2021-10-19 21:24 ` [PATCH 14/16] block: skip advance when async and not needed Pavel Begunkov
2021-10-20 6:41 ` Christoph Hellwig
2021-10-19 21:24 ` [PATCH 15/16] block: optimise blk_may_split for normal rw Pavel Begunkov
2021-10-20 6:25 ` Christoph Hellwig
2021-10-20 13:38 ` Pavel Begunkov
2021-10-19 21:24 ` [PATCH 16/16] block: optimise submit_bio_checks " Pavel Begunkov
2021-10-20 6:26 ` Christoph Hellwig
2021-10-19 23:31 ` [PATCH 00/16] block optimisation round Jens Axboe
2021-10-20 0:21 ` Jens Axboe
2021-10-20 0:22 ` Jens Axboe
2021-10-20 14:12 ` (subset) " Jens Axboe
2021-10-20 14:54 ` Pavel Begunkov
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