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From: Ming Lei <ming.lei@redhat.com>
To: Omar Sandoval <osandov@osandov.com>
Cc: Jens Axboe <axboe@kernel.dk>,
	linux-block@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-mm@kvack.org, Dave Chinner <dchinner@redhat.com>,
	Kent Overstreet <kent.overstreet@gmail.com>,
	Mike Snitzer <snitzer@redhat.com>,
	dm-devel@redhat.com, Alexander Viro <viro@zeniv.linux.org.uk>,
	linux-fsdevel@vger.kernel.org, Shaohua Li <shli@kernel.org>,
	linux-raid@vger.kernel.org, linux-erofs@lists.ozlabs.org,
	David Sterba <dsterba@suse.com>,
	linux-btrfs@vger.kernel.org,
	"Darrick J . Wong" <darrick.wong@oracle.com>,
	linux-xfs@vger.kernel.org, Gao Xiang <gaoxiang25@huawei.com>,
	Christoph Hellwig <hch@lst.de>, Theodore Ts'o <tytso@mit.edu>,
	linux-ext4@vger.kernel.org, Coly Li <colyli@suse.de>,
	linux-bcache@vger.kernel.org, Boaz Harrosh <ooo@electrozaur.com>,
	Bob Peterson <rpeterso@r>
Subject: Re: [PATCH V10 18/19] block: kill QUEUE_FLAG_NO_SG_MERGE
Date: Mon, 19 Nov 2018 17:17:46 +0800	[thread overview]
Message-ID: <20181119091746.GO16736@ming.t460p> (raw)
In-Reply-To: <20181116021811.GM23828@vader>

On Thu, Nov 15, 2018 at 06:18:11PM -0800, Omar Sandoval wrote:
> On Thu, Nov 15, 2018 at 04:53:05PM +0800, Ming Lei wrote:
> > Since bdced438acd83ad83a6c ("block: setup bi_phys_segments after splitting"),
> > physical segment number is mainly figured out in blk_queue_split() for
> > fast path, and the flag of BIO_SEG_VALID is set there too.
> > 
> > Now only blk_recount_segments() and blk_recalc_rq_segments() use this
> > flag.
> > 
> > Basically blk_recount_segments() is bypassed in fast path given BIO_SEG_VALID
> > is set in blk_queue_split().
> > 
> > For another user of blk_recalc_rq_segments():
> > 
> > - run in partial completion branch of blk_update_request, which is an unusual case
> > 
> > - run in blk_cloned_rq_check_limits(), still not a big problem if the flag is killed
> > since dm-rq is the only user.
> > 
> > Multi-page bvec is enabled now, QUEUE_FLAG_NO_SG_MERGE doesn't make sense any more.
> 
> This commit message wasn't very clear. Is it the case that
> QUEUE_FLAG_NO_SG_MERGE is no longer set by any drivers?

OK, I will add the explanation to commit log in next version.

05f1dd53152173 (block: add queue flag for disabling SG merging) introduces this
flag for NVMe performance purpose only, so that merging to segment can
be bypassed for NVMe.

Actually this optimization was bypassed by 54efd50bfd873e2d (block: make
generic_make_request handle arbitrarily sized bios) and bdced438acd83ad83a6c
("block: setup bi_phys_segments after splitting").

Now segment computation can be very quick, given most of times one bvec
can be thought as one segment, so we can remove the flag.

thanks, 
Ming

WARNING: multiple messages have this Message-ID (diff)
From: Ming Lei <ming.lei@redhat.com>
To: Omar Sandoval <osandov@osandov.com>
Cc: Jens Axboe <axboe@kernel.dk>,
	linux-block@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-mm@kvack.org, Dave Chinner <dchinner@redhat.com>,
	Kent Overstreet <kent.overstreet@gmail.com>,
	Mike Snitzer <snitzer@redhat.com>,
	dm-devel@redhat.com, Alexander Viro <viro@zeniv.linux.org.uk>,
	linux-fsdevel@vger.kernel.org, Shaohua Li <shli@kernel.org>,
	linux-raid@vger.kernel.org, linux-erofs@lists.ozlabs.org,
	David Sterba <dsterba@suse.com>,
	linux-btrfs@vger.kernel.org,
	"Darrick J . Wong" <darrick.wong@oracle.com>,
	linux-xfs@vger.kernel.org, Gao Xiang <gaoxiang25@huawei.com>,
	Christoph Hellwig <hch@lst.de>, Theodore Ts'o <tytso@mit.edu>,
	linux-ext4@vger.kernel.org, Coly Li <colyli@suse.de>,
	linux-bcache@vger.kernel.org, Boaz Harrosh <ooo@electrozaur.com>,
	Bob Peterson <rpeterso@redhat.com>,
	cluster-devel@redhat.com
Subject: Re: [PATCH V10 18/19] block: kill QUEUE_FLAG_NO_SG_MERGE
Date: Mon, 19 Nov 2018 17:17:46 +0800	[thread overview]
Message-ID: <20181119091746.GO16736@ming.t460p> (raw)
In-Reply-To: <20181116021811.GM23828@vader>

On Thu, Nov 15, 2018 at 06:18:11PM -0800, Omar Sandoval wrote:
> On Thu, Nov 15, 2018 at 04:53:05PM +0800, Ming Lei wrote:
> > Since bdced438acd83ad83a6c ("block: setup bi_phys_segments after splitting"),
> > physical segment number is mainly figured out in blk_queue_split() for
> > fast path, and the flag of BIO_SEG_VALID is set there too.
> > 
> > Now only blk_recount_segments() and blk_recalc_rq_segments() use this
> > flag.
> > 
> > Basically blk_recount_segments() is bypassed in fast path given BIO_SEG_VALID
> > is set in blk_queue_split().
> > 
> > For another user of blk_recalc_rq_segments():
> > 
> > - run in partial completion branch of blk_update_request, which is an unusual case
> > 
> > - run in blk_cloned_rq_check_limits(), still not a big problem if the flag is killed
> > since dm-rq is the only user.
> > 
> > Multi-page bvec is enabled now, QUEUE_FLAG_NO_SG_MERGE doesn't make sense any more.
> 
> This commit message wasn't very clear. Is it the case that
> QUEUE_FLAG_NO_SG_MERGE is no longer set by any drivers?

OK, I will add the explanation to commit log in next version.

05f1dd53152173 (block: add queue flag for disabling SG merging) introduces this
flag for NVMe performance purpose only, so that merging to segment can
be bypassed for NVMe.

Actually this optimization was bypassed by 54efd50bfd873e2d (block: make
generic_make_request handle arbitrarily sized bios) and bdced438acd83ad83a6c
("block: setup bi_phys_segments after splitting").

Now segment computation can be very quick, given most of times one bvec
can be thought as one segment, so we can remove the flag.

thanks, 
Ming

WARNING: multiple messages have this Message-ID (diff)
From: ming.lei@redhat.com (Ming Lei)
Subject: [PATCH V10 18/19] block: kill QUEUE_FLAG_NO_SG_MERGE
Date: Mon, 19 Nov 2018 17:17:46 +0800	[thread overview]
Message-ID: <20181119091746.GO16736@ming.t460p> (raw)
In-Reply-To: <20181116021811.GM23828@vader>

On Thu, Nov 15, 2018@06:18:11PM -0800, Omar Sandoval wrote:
> On Thu, Nov 15, 2018@04:53:05PM +0800, Ming Lei wrote:
> > Since bdced438acd83ad83a6c ("block: setup bi_phys_segments after splitting"),
> > physical segment number is mainly figured out in blk_queue_split() for
> > fast path, and the flag of BIO_SEG_VALID is set there too.
> > 
> > Now only blk_recount_segments() and blk_recalc_rq_segments() use this
> > flag.
> > 
> > Basically blk_recount_segments() is bypassed in fast path given BIO_SEG_VALID
> > is set in blk_queue_split().
> > 
> > For another user of blk_recalc_rq_segments():
> > 
> > - run in partial completion branch of blk_update_request, which is an unusual case
> > 
> > - run in blk_cloned_rq_check_limits(), still not a big problem if the flag is killed
> > since dm-rq is the only user.
> > 
> > Multi-page bvec is enabled now, QUEUE_FLAG_NO_SG_MERGE doesn't make sense any more.
> 
> This commit message wasn't very clear. Is it the case that
> QUEUE_FLAG_NO_SG_MERGE is no longer set by any drivers?

OK, I will add the explanation to commit log in next version.

05f1dd53152173 (block: add queue flag for disabling SG merging) introduces this
flag for NVMe performance purpose only, so that merging to segment can
be bypassed for NVMe.

Actually this optimization was bypassed by 54efd50bfd873e2d (block: make
generic_make_request handle arbitrarily sized bios) and bdced438acd83ad83a6c
("block: setup bi_phys_segments after splitting").

Now segment computation can be very quick, given most of times one bvec
can be thought as one segment, so we can remove the flag.

thanks, 
Ming

WARNING: multiple messages have this Message-ID (diff)
From: Ming Lei <ming.lei@redhat.com>
To: cluster-devel.redhat.com
Subject: [Cluster-devel] [PATCH V10 18/19] block: kill QUEUE_FLAG_NO_SG_MERGE
Date: Mon, 19 Nov 2018 17:17:46 +0800	[thread overview]
Message-ID: <20181119091746.GO16736@ming.t460p> (raw)
In-Reply-To: <20181116021811.GM23828@vader>

On Thu, Nov 15, 2018 at 06:18:11PM -0800, Omar Sandoval wrote:
> On Thu, Nov 15, 2018 at 04:53:05PM +0800, Ming Lei wrote:
> > Since bdced438acd83ad83a6c ("block: setup bi_phys_segments after splitting"),
> > physical segment number is mainly figured out in blk_queue_split() for
> > fast path, and the flag of BIO_SEG_VALID is set there too.
> > 
> > Now only blk_recount_segments() and blk_recalc_rq_segments() use this
> > flag.
> > 
> > Basically blk_recount_segments() is bypassed in fast path given BIO_SEG_VALID
> > is set in blk_queue_split().
> > 
> > For another user of blk_recalc_rq_segments():
> > 
> > - run in partial completion branch of blk_update_request, which is an unusual case
> > 
> > - run in blk_cloned_rq_check_limits(), still not a big problem if the flag is killed
> > since dm-rq is the only user.
> > 
> > Multi-page bvec is enabled now, QUEUE_FLAG_NO_SG_MERGE doesn't make sense any more.
> 
> This commit message wasn't very clear. Is it the case that
> QUEUE_FLAG_NO_SG_MERGE is no longer set by any drivers?

OK, I will add the explanation to commit log in next version.

05f1dd53152173 (block: add queue flag for disabling SG merging) introduces this
flag for NVMe performance purpose only, so that merging to segment can
be bypassed for NVMe.

Actually this optimization was bypassed by 54efd50bfd873e2d (block: make
generic_make_request handle arbitrarily sized bios) and bdced438acd83ad83a6c
("block: setup bi_phys_segments after splitting").

Now segment computation can be very quick, given most of times one bvec
can be thought as one segment, so we can remove the flag.

thanks, 
Ming



  parent reply	other threads:[~2018-11-19  9:17 UTC|newest]

Thread overview: 410+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-11-15  8:52 [PATCH V10 00/19] block: support multi-page bvec Ming Lei
2018-11-15  8:52 ` [Cluster-devel] " Ming Lei
2018-11-15  8:52 ` Ming Lei
2018-11-15  8:52 ` Ming Lei
2018-11-15  8:52 ` [PATCH V10 01/19] block: introduce multi-page page bvec helpers Ming Lei
2018-11-15  8:52   ` [Cluster-devel] " Ming Lei
2018-11-15  8:52   ` Ming Lei
2018-11-15  8:52   ` Ming Lei
2018-11-15 18:25   ` Omar Sandoval
2018-11-15 18:25     ` [Cluster-devel] " Omar Sandoval
2018-11-15 18:25     ` Omar Sandoval
2018-11-15 18:25     ` Omar Sandoval
2018-11-19  2:25     ` Ming Lei
2018-11-19  2:25       ` [Cluster-devel] " Ming Lei
2018-11-19  2:25       ` Ming Lei
2018-11-19  2:25       ` Ming Lei
2018-11-16 13:13   ` Christoph Hellwig
2018-11-16 13:13     ` [Cluster-devel] " Christoph Hellwig
2018-11-16 13:13     ` Christoph Hellwig
2018-11-16 13:13     ` Christoph Hellwig
2018-11-19  2:23     ` Ming Lei
2018-11-19  2:23       ` [Cluster-devel] " Ming Lei
2018-11-19  2:23       ` Ming Lei
2018-11-19  2:23       ` Ming Lei
2018-11-19  3:10       ` Jens Axboe
2018-11-19  3:10         ` [Cluster-devel] " Jens Axboe
2018-11-19  3:10         ` Jens Axboe
2018-11-19  3:35         ` Ming Lei
2018-11-19  3:35           ` [Cluster-devel] " Ming Lei
2018-11-19  3:35           ` Ming Lei
2018-11-19  3:35           ` Ming Lei
2018-11-15  8:52 ` [PATCH V10 02/19] block: introduce bio_for_each_bvec() Ming Lei
2018-11-15  8:52   ` [Cluster-devel] " Ming Lei
2018-11-15  8:52   ` Ming Lei
2018-11-15  8:52   ` Ming Lei
2018-11-15 18:28   ` Omar Sandoval
2018-11-15 18:28     ` [Cluster-devel] " Omar Sandoval
2018-11-15 18:28     ` Omar Sandoval
2018-11-15 18:28     ` Omar Sandoval
2018-11-16 13:30   ` Christoph Hellwig
2018-11-16 13:30     ` [Cluster-devel] " Christoph Hellwig
2018-11-16 13:30     ` Christoph Hellwig
2018-11-16 13:30     ` Christoph Hellwig
2018-11-19  3:31     ` Ming Lei
2018-11-19  3:31       ` [Cluster-devel] " Ming Lei
2018-11-19  3:31       ` Ming Lei
2018-11-19  3:31       ` Ming Lei
2018-11-15  8:52 ` [PATCH V10 03/19] block: use bio_for_each_bvec() to compute multi-page bvec count Ming Lei
2018-11-15  8:52   ` [Cluster-devel] " Ming Lei
2018-11-15  8:52   ` Ming Lei
2018-11-15  8:52   ` Ming Lei
2018-11-15 20:20   ` Omar Sandoval
2018-11-15 20:20     ` [Cluster-devel] " Omar Sandoval
2018-11-15 20:20     ` Omar Sandoval
2018-11-15 20:20     ` Omar Sandoval
2018-11-15 21:05     ` Mike Snitzer
2018-11-15 21:05       ` [Cluster-devel] " Mike Snitzer
2018-11-15 21:05       ` Mike Snitzer
2018-11-15 21:05       ` Mike Snitzer
2018-11-15 22:18       ` Omar Sandoval
2018-11-15 22:18         ` [Cluster-devel] " Omar Sandoval
2018-11-15 22:18         ` Omar Sandoval
2018-11-15 22:18         ` Omar Sandoval
2018-11-16  9:19         ` Christoph Hellwig
2018-11-16  9:19           ` [Cluster-devel] " Christoph Hellwig
2018-11-16  9:19           ` Christoph Hellwig
2018-11-16  9:19           ` Christoph Hellwig
2018-11-16  9:41           ` Gao Xiang
2018-11-16  9:41             ` [Cluster-devel] " Gao Xiang
2018-11-16  9:41             ` Gao Xiang
2018-11-16  9:41             ` Gao Xiang
2018-11-16  9:41             ` Gao Xiang
2018-11-16 16:04           ` Omar Sandoval
2018-11-16 16:04             ` [Cluster-devel] " Omar Sandoval
2018-11-16 16:04             ` Omar Sandoval
2018-11-16 16:04             ` Omar Sandoval
2018-11-19  7:50     ` Ming Lei
2018-11-19  7:50       ` [Cluster-devel] " Ming Lei
2018-11-19  7:50       ` Ming Lei
2018-11-19  7:50       ` Ming Lei
2018-11-15  8:52 ` [PATCH V10 04/19] block: use bio_for_each_bvec() to map sg Ming Lei
2018-11-15  8:52   ` [Cluster-devel] " Ming Lei
2018-11-15  8:52   ` Ming Lei
2018-11-15  8:52   ` Ming Lei
2018-11-15 22:33   ` Omar Sandoval
2018-11-15 22:33     ` [Cluster-devel] " Omar Sandoval
2018-11-15 22:33     ` Omar Sandoval
2018-11-15 22:33     ` Omar Sandoval
2018-11-16 13:33   ` Christoph Hellwig
2018-11-16 13:33     ` [Cluster-devel] " Christoph Hellwig
2018-11-16 13:33     ` Christoph Hellwig
2018-11-16 13:33     ` Christoph Hellwig
2018-11-19  7:51     ` Ming Lei
2018-11-19  7:51       ` [Cluster-devel] " Ming Lei
2018-11-19  7:51       ` Ming Lei
2018-11-19  7:51       ` Ming Lei
2018-11-15  8:52 ` [PATCH V10 05/19] block: introduce bvec_last_segment() Ming Lei
2018-11-15  8:52   ` [Cluster-devel] " Ming Lei
2018-11-15  8:52   ` Ming Lei
2018-11-15  8:52   ` Ming Lei
2018-11-15 23:23   ` Omar Sandoval
2018-11-15 23:23     ` [Cluster-devel] " Omar Sandoval
2018-11-15 23:23     ` Omar Sandoval
2018-11-15 23:23     ` Omar Sandoval
2018-11-19  7:57     ` Ming Lei
2018-11-19  7:57       ` [Cluster-devel] " Ming Lei
2018-11-19  7:57       ` Ming Lei
2018-11-19  7:57       ` Ming Lei
2018-11-16 13:34   ` Christoph Hellwig
2018-11-16 13:34     ` [Cluster-devel] " Christoph Hellwig
2018-11-16 13:34     ` Christoph Hellwig
2018-11-16 13:34     ` Christoph Hellwig
2018-11-15  8:52 ` [PATCH V10 06/19] fs/buffer.c: use bvec iterator to truncate the bio Ming Lei
2018-11-15  8:52   ` [Cluster-devel] " Ming Lei
2018-11-15  8:52   ` Ming Lei
2018-11-15  8:52   ` Ming Lei
2018-11-16  0:20   ` Omar Sandoval
2018-11-16  0:20     ` [Cluster-devel] " Omar Sandoval
2018-11-16  0:20     ` Omar Sandoval
2018-11-16  0:20     ` Omar Sandoval
2018-11-16 13:36   ` Christoph Hellwig
2018-11-16 13:36     ` [Cluster-devel] " Christoph Hellwig
2018-11-16 13:36     ` Christoph Hellwig
2018-11-16 13:36     ` Christoph Hellwig
2018-11-15  8:52 ` [PATCH V10 07/19] btrfs: use bvec_last_segment to get bio's last page Ming Lei
2018-11-15  8:52   ` [Cluster-devel] " Ming Lei
2018-11-15  8:52   ` Ming Lei
2018-11-15  8:52   ` Ming Lei
2018-11-16  0:21   ` Omar Sandoval
2018-11-16  0:21     ` [Cluster-devel] " Omar Sandoval
2018-11-16  0:21     ` Omar Sandoval
2018-11-16  0:21     ` Omar Sandoval
2018-11-16 13:37   ` Christoph Hellwig
2018-11-16 13:37     ` [Cluster-devel] " Christoph Hellwig
2018-11-16 13:37     ` Christoph Hellwig
2018-11-16 13:37     ` Christoph Hellwig
2018-11-19  8:09     ` Ming Lei
2018-11-19  8:09       ` [Cluster-devel] " Ming Lei
2018-11-19  8:09       ` Ming Lei
2018-11-19  8:09       ` Ming Lei
2018-11-15  8:52 ` [PATCH V10 08/19] btrfs: move bio_pages_all() to btrfs Ming Lei
2018-11-15  8:52   ` [Cluster-devel] " Ming Lei
2018-11-15  8:52   ` Ming Lei
2018-11-15  8:52   ` Ming Lei
2018-11-16  0:23   ` Omar Sandoval
2018-11-16  0:23     ` [Cluster-devel] " Omar Sandoval
2018-11-16  0:23     ` Omar Sandoval
2018-11-16  0:23     ` Omar Sandoval
2018-11-19  8:15     ` Ming Lei
2018-11-19  8:15       ` [Cluster-devel] " Ming Lei
2018-11-19  8:15       ` Ming Lei
2018-11-19  8:15       ` Ming Lei
2018-11-16 13:38   ` Christoph Hellwig
2018-11-16 13:38     ` [Cluster-devel] " Christoph Hellwig
2018-11-16 13:38     ` Christoph Hellwig
2018-11-16 13:38     ` Christoph Hellwig
2018-11-19  8:19     ` Ming Lei
2018-11-19  8:19       ` [Cluster-devel] " Ming Lei
2018-11-19  8:19       ` Ming Lei
2018-11-19  8:19       ` Ming Lei
2018-11-19  8:24       ` Christoph Hellwig
2018-11-19  8:24         ` [Cluster-devel] " Christoph Hellwig
2018-11-19  8:24         ` Christoph Hellwig
2018-11-19  8:24         ` Christoph Hellwig
2018-11-15  8:52 ` [PATCH V10 09/19] block: introduce bio_bvecs() Ming Lei
2018-11-15  8:52   ` [Cluster-devel] " Ming Lei
2018-11-15  8:52   ` Ming Lei
2018-11-15  8:52   ` Ming Lei
2018-11-16  0:26   ` Omar Sandoval
2018-11-16  0:26     ` [Cluster-devel] " Omar Sandoval
2018-11-16  0:26     ` Omar Sandoval
2018-11-16  0:26     ` Omar Sandoval
2018-11-16 13:45   ` Christoph Hellwig
2018-11-16 13:45     ` [Cluster-devel] " Christoph Hellwig
2018-11-16 13:45     ` Christoph Hellwig
2018-11-16 13:45     ` Christoph Hellwig
2018-11-19  8:21     ` Ming Lei
2018-11-19  8:21       ` [Cluster-devel] " Ming Lei
2018-11-19  8:21       ` Ming Lei
2018-11-19  8:21       ` Ming Lei
2018-11-20  0:49     ` Sagi Grimberg
2018-11-20  0:49       ` [Cluster-devel] " Sagi Grimberg
2018-11-20  0:49       ` Sagi Grimberg
2018-11-20  0:49       ` Sagi Grimberg
2018-11-20 16:16       ` Christoph Hellwig
2018-11-20 16:16         ` [Cluster-devel] " Christoph Hellwig
2018-11-20 16:16         ` Christoph Hellwig
2018-11-20 16:16         ` Christoph Hellwig
2018-11-20 20:11         ` Sagi Grimberg
2018-11-20 20:11           ` [Cluster-devel] " Sagi Grimberg
2018-11-20 20:11           ` Sagi Grimberg
2018-11-20 20:11           ` Sagi Grimberg
2018-11-21  0:59           ` Ming Lei
2018-11-21  0:59             ` [Cluster-devel] " Ming Lei
2018-11-21  0:59             ` Ming Lei
2018-11-21  0:59             ` Ming Lei
2018-11-21  3:20             ` Sagi Grimberg
2018-11-21  3:20               ` [Cluster-devel] " Sagi Grimberg
2018-11-21  3:20               ` Sagi Grimberg
2018-11-21  3:20               ` Sagi Grimberg
2018-11-21  3:44               ` Ming Lei
2018-11-21  3:44                 ` [Cluster-devel] " Ming Lei
2018-11-21  3:44                 ` Ming Lei
2018-11-21  3:44                 ` Ming Lei
2018-11-21  4:25                 ` Sagi Grimberg
2018-11-21  4:25                   ` [Cluster-devel] " Sagi Grimberg
2018-11-21  4:25                   ` Sagi Grimberg
2018-11-21  4:25                   ` Sagi Grimberg
2018-11-21  4:42                   ` Sagi Grimberg
2018-11-21  4:42                     ` [Cluster-devel] " Sagi Grimberg
2018-11-21  4:42                     ` Sagi Grimberg
2018-11-21  4:42                     ` Sagi Grimberg
2018-11-21  5:04                     ` Ming Lei
2018-11-21  5:04                       ` [Cluster-devel] " Ming Lei
2018-11-21  5:04                       ` Ming Lei
2018-11-21  5:04                       ` Ming Lei
2018-11-21  5:35                       ` Sagi Grimberg
2018-11-21  5:35                         ` [Cluster-devel] " Sagi Grimberg
2018-11-21  5:35                         ` Sagi Grimberg
2018-11-21  5:35                         ` Sagi Grimberg
2018-11-21  8:46                         ` Christoph Hellwig
2018-11-21  8:46                           ` [Cluster-devel] " Christoph Hellwig
2018-11-21  8:46                           ` Christoph Hellwig
2018-11-21  8:46                           ` Christoph Hellwig
2018-11-21 10:19                         ` Ming Lei
2018-11-21 10:19                           ` [Cluster-devel] " Ming Lei
2018-11-21 10:19                           ` Ming Lei
2018-11-21 10:19                           ` Ming Lei
2018-11-15  8:52 ` [PATCH V10 10/19] block: loop: pass multi-page bvec to iov_iter Ming Lei
2018-11-15  8:52   ` [Cluster-devel] " Ming Lei
2018-11-15  8:52   ` Ming Lei
2018-11-15  8:52   ` Ming Lei
2018-11-16  0:40   ` Omar Sandoval
2018-11-16  0:40     ` [Cluster-devel] " Omar Sandoval
2018-11-16  0:40     ` Omar Sandoval
2018-11-16  0:40     ` Omar Sandoval
2018-11-19  8:25     ` Ming Lei
2018-11-19  8:25       ` [Cluster-devel] " Ming Lei
2018-11-19  8:25       ` Ming Lei
2018-11-19  8:25       ` Ming Lei
2018-11-15  8:52 ` [PATCH V10 11/19] bcache: avoid to use bio_for_each_segment_all() in bch_bio_alloc_pages() Ming Lei
2018-11-15  8:52   ` [Cluster-devel] " Ming Lei
2018-11-15  8:52   ` Ming Lei
2018-11-15  8:52   ` Ming Lei
2018-11-16  0:44   ` Omar Sandoval
2018-11-16  0:44     ` [Cluster-devel] " Omar Sandoval
2018-11-16  0:44     ` Omar Sandoval
2018-11-16  0:44     ` Omar Sandoval
2018-11-19  8:27     ` Ming Lei
2018-11-19  8:27       ` [Cluster-devel] " Ming Lei
2018-11-19  8:27       ` Ming Lei
2018-11-19  8:27       ` Ming Lei
2018-11-16 13:46   ` Christoph Hellwig
2018-11-16 13:46     ` [Cluster-devel] " Christoph Hellwig
2018-11-16 13:46     ` Christoph Hellwig
2018-11-16 13:46     ` Christoph Hellwig
2018-11-19  8:28     ` Ming Lei
2018-11-19  8:28       ` [Cluster-devel] " Ming Lei
2018-11-19  8:28       ` Ming Lei
2018-11-19  8:28       ` Ming Lei
2018-11-15  8:52 ` [PATCH V10 12/19] block: allow bio_for_each_segment_all() to iterate over multi-page bvec Ming Lei
2018-11-15  8:52   ` [Cluster-devel] " Ming Lei
2018-11-15  8:52   ` Ming Lei
2018-11-15 12:42   ` David Sterba
2018-11-15 12:42     ` [Cluster-devel] " David Sterba
2018-11-15 12:42     ` David Sterba
2018-11-19  8:29     ` Ming Lei
2018-11-19  8:29       ` [Cluster-devel] " Ming Lei
2018-11-19  8:29       ` Ming Lei
2018-11-16  1:22   ` Omar Sandoval
2018-11-16  1:22     ` [Cluster-devel] " Omar Sandoval
2018-11-16  1:22     ` Omar Sandoval
2018-11-19  8:32     ` Ming Lei
2018-11-19  8:32       ` [Cluster-devel] " Ming Lei
2018-11-19  8:32       ` Ming Lei
2018-11-15  8:53 ` [PATCH V10 13/19] iomap & xfs: only account for new added page Ming Lei
2018-11-15  8:53   ` [Cluster-devel] " Ming Lei
2018-11-15  8:53   ` Ming Lei
2018-11-15  8:53   ` Ming Lei
2018-11-16  1:46   ` Omar Sandoval
2018-11-16  1:46     ` [Cluster-devel] " Omar Sandoval
2018-11-16  1:46     ` Omar Sandoval
2018-11-16  1:46     ` Omar Sandoval
2018-11-19  8:35     ` Ming Lei
2018-11-19  8:35       ` [Cluster-devel] " Ming Lei
2018-11-19  8:35       ` Ming Lei
2018-11-19  8:35       ` Ming Lei
2018-11-16 13:49   ` Christoph Hellwig
2018-11-16 13:49     ` [Cluster-devel] " Christoph Hellwig
2018-11-16 13:49     ` Christoph Hellwig
2018-11-16 13:49     ` Christoph Hellwig
2018-11-19  8:39     ` Ming Lei
2018-11-19  8:39       ` [Cluster-devel] " Ming Lei
2018-11-19  8:39       ` Ming Lei
2018-11-19  8:39       ` Ming Lei
2018-11-15  8:53 ` [PATCH V10 14/19] block: enable multipage bvecs Ming Lei
2018-11-15  8:53   ` [Cluster-devel] " Ming Lei
2018-11-15  8:53   ` Ming Lei
2018-11-15  8:53   ` Ming Lei
2018-11-16  1:56   ` Omar Sandoval
2018-11-16  1:56     ` [Cluster-devel] " Omar Sandoval
2018-11-16  1:56     ` Omar Sandoval
2018-11-16  1:56     ` Omar Sandoval
2018-11-19  8:45     ` Ming Lei
2018-11-19  8:45       ` [Cluster-devel] " Ming Lei
2018-11-19  8:45       ` Ming Lei
2018-11-19  8:45       ` Ming Lei
2018-11-16 13:53   ` Christoph Hellwig
2018-11-16 13:53     ` [Cluster-devel] " Christoph Hellwig
2018-11-16 13:53     ` Christoph Hellwig
2018-11-16 13:53     ` Christoph Hellwig
2018-11-19  9:00     ` Ming Lei
2018-11-19  9:00       ` [Cluster-devel] " Ming Lei
2018-11-19  9:00       ` Ming Lei
2018-11-19  9:00       ` Ming Lei
2018-11-15  8:53 ` [PATCH V10 15/19] block: always define BIO_MAX_PAGES as 256 Ming Lei
2018-11-15  8:53   ` [Cluster-devel] " Ming Lei
2018-11-15  8:53   ` Ming Lei
2018-11-15  8:53   ` Ming Lei
2018-11-16  1:59   ` Omar Sandoval
2018-11-16  1:59     ` [Cluster-devel] " Omar Sandoval
2018-11-16  1:59     ` Omar Sandoval
2018-11-16  1:59     ` Omar Sandoval
2018-11-19  9:04     ` Ming Lei
2018-11-19  9:04       ` [Cluster-devel] " Ming Lei
2018-11-19  9:04       ` Ming Lei
2018-11-19  9:04       ` Ming Lei
2018-11-20  2:45       ` Huang, Ying
2018-11-20  2:45         ` [Cluster-devel] " Huang, Ying
2018-11-20  2:45         ` Huang, Ying
2018-11-20  2:45         ` Huang, Ying
2018-11-20  2:45         ` Huang, Ying
2018-11-20  2:45         ` Huang, Ying
2018-11-16 13:53   ` Christoph Hellwig
2018-11-16 13:53     ` [Cluster-devel] " Christoph Hellwig
2018-11-16 13:53     ` Christoph Hellwig
2018-11-16 13:53     ` Christoph Hellwig
2018-11-15  8:53 ` [PATCH V10 16/19] block: document usage of bio iterator helpers Ming Lei
2018-11-15  8:53   ` [Cluster-devel] " Ming Lei
2018-11-15  8:53   ` Ming Lei
2018-11-15  8:53   ` Ming Lei
2018-11-16  2:05   ` Omar Sandoval
2018-11-16  2:05     ` [Cluster-devel] " Omar Sandoval
2018-11-16  2:05     ` Omar Sandoval
2018-11-16  2:05     ` Omar Sandoval
2018-11-15  8:53 ` [PATCH V10 17/19] block: don't use bio->bi_vcnt to figure out segment number Ming Lei
2018-11-15  8:53   ` [Cluster-devel] " Ming Lei
2018-11-15  8:53   ` Ming Lei
2018-11-15  8:53   ` Ming Lei
2018-11-16  2:11   ` Omar Sandoval
2018-11-16  2:11     ` [Cluster-devel] " Omar Sandoval
2018-11-16  2:11     ` Omar Sandoval
2018-11-16  2:11     ` Omar Sandoval
2018-11-16  2:11     ` Omar Sandoval
2018-11-19  9:06     ` Ming Lei
2018-11-19  9:06       ` [Cluster-devel] " Ming Lei
2018-11-19  9:06       ` Ming Lei
2018-11-19  9:06       ` Ming Lei
2018-11-16 13:55   ` Christoph Hellwig
2018-11-16 13:55     ` [Cluster-devel] " Christoph Hellwig
2018-11-16 13:55     ` Christoph Hellwig
2018-11-16 13:55     ` Christoph Hellwig
2018-11-15  8:53 ` [PATCH V10 18/19] block: kill QUEUE_FLAG_NO_SG_MERGE Ming Lei
2018-11-15  8:53   ` [Cluster-devel] " Ming Lei
2018-11-15  8:53   ` Ming Lei
2018-11-15  8:53   ` Ming Lei
2018-11-16  2:18   ` Omar Sandoval
2018-11-16  2:18     ` [Cluster-devel] " Omar Sandoval
2018-11-16  2:18     ` Omar Sandoval
2018-11-16  2:18     ` Omar Sandoval
2018-11-16 13:59     ` Christoph Hellwig
2018-11-16 13:59       ` [Cluster-devel] " Christoph Hellwig
2018-11-16 13:59       ` Christoph Hellwig
2018-11-16 13:59       ` Christoph Hellwig
2018-11-16 16:40       ` Omar Sandoval
2018-11-16 16:40         ` [Cluster-devel] " Omar Sandoval
2018-11-16 16:40         ` Omar Sandoval
2018-11-16 16:40         ` Omar Sandoval
2018-11-19  9:17     ` Ming Lei [this message]
2018-11-19  9:17       ` [Cluster-devel] " Ming Lei
2018-11-19  9:17       ` Ming Lei
2018-11-19  9:17       ` Ming Lei
2018-11-16 13:58   ` Christoph Hellwig
2018-11-16 13:58     ` [Cluster-devel] " Christoph Hellwig
2018-11-16 13:58     ` Christoph Hellwig
2018-11-16 13:58     ` Christoph Hellwig
2018-11-19  9:20     ` Ming Lei
2018-11-19  9:20       ` [Cluster-devel] " Ming Lei
2018-11-19  9:20       ` Ming Lei
2018-11-19  9:20       ` Ming Lei
2018-11-15  8:53 ` [PATCH V10 19/19] block: kill BLK_MQ_F_SG_MERGE Ming Lei
2018-11-15  8:53   ` [Cluster-devel] " Ming Lei
2018-11-15  8:53   ` Ming Lei
2018-11-15  8:53   ` Ming Lei
2018-11-16 13:59   ` Christoph Hellwig
2018-11-16 13:59     ` [Cluster-devel] " Christoph Hellwig
2018-11-16 13:59     ` Christoph Hellwig
2018-11-16 13:59     ` Christoph Hellwig
2018-11-16 16:40   ` Omar Sandoval
2018-11-16 16:40     ` [Cluster-devel] " Omar Sandoval
2018-11-16 16:40     ` Omar Sandoval
2018-11-16 16:40     ` Omar Sandoval
2018-11-16 14:03 ` [PATCH V10 00/19] block: support multi-page bvec Christoph Hellwig
2018-11-16 14:03   ` [Cluster-devel] " Christoph Hellwig
2018-11-16 14:03   ` Christoph Hellwig
2018-11-16 14:03   ` Christoph Hellwig
2018-11-17  2:42   ` Ming Lei
2018-11-17  2:42     ` [Cluster-devel] " Ming Lei
2018-11-17  2:42     ` Ming Lei
2018-11-17  2:42     ` Ming Lei

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