From: Christoph Hellwig <hch@lst.de>
To: Ming Lei <ming.lei@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>, Jens Axboe <axboe@kernel.dk>,
linux-block@vger.kernel.org
Subject: Re: [PATCH 06/11] block: optimize generic_make_request for direct to blk-mq issue
Date: Mon, 27 Apr 2020 17:10:55 +0200 [thread overview]
Message-ID: <20200427151055.GA6425@lst.de> (raw)
In-Reply-To: <20200426025352.GA512559@T590>
On Sun, Apr 26, 2020 at 10:53:52AM +0800, Ming Lei wrote:
> blk_mq_make_request() still calls into generic_make_request(), so bio
> may be added to current->bio_list, then looks __direct_make_request()
> can't cover recursive bio submission any more.
True, we can't do the series as-is.
next prev parent reply other threads:[~2020-04-27 15:10 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-25 17:09 [RFC] more make_request optimizations Christoph Hellwig
2020-04-25 17:09 ` [PATCH 01/11] block: improve the kerneldoc comments for submit_bio and generic_make_request Christoph Hellwig
2020-04-26 2:59 ` Ming Lei
2020-04-25 17:09 ` [PATCH 02/11] block: cleanup the memory stall accounting in submit_bio Christoph Hellwig
2020-04-25 17:09 ` [PATCH 03/11] block: replace BIO_QUEUE_ENTERED with BIO_CGROUP_ACCT Christoph Hellwig
2020-04-25 17:09 ` [PATCH 04/11] block: add a bio_queue_enter helper Christoph Hellwig
2020-04-25 17:09 ` [PATCH 05/11] block: refactor generic_make_request Christoph Hellwig
2020-04-25 17:09 ` [PATCH 06/11] block: optimize generic_make_request for direct to blk-mq issue Christoph Hellwig
2020-04-26 2:53 ` Ming Lei
2020-04-27 15:10 ` Christoph Hellwig [this message]
2020-04-25 17:09 ` [PATCH 07/11] block: optimize do_make_request " Christoph Hellwig
2020-04-25 17:09 ` [PATCH 08/11] block: move the call to blk_queue_enter_live out of blk_mq_get_request Christoph Hellwig
2020-04-25 17:09 ` [PATCH 09/11] block: remove a pointless queue enter pair in blk_mq_alloc_request Christoph Hellwig
2020-04-25 17:09 ` [PATCH 10/11] block: remove a pointless queue enter pair in blk_mq_alloc_request_hctx Christoph Hellwig
2020-04-25 17:09 ` [PATCH 11/11] block: allow blk_mq_make_request to consume the q_usage_counter reference Christoph Hellwig
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