From: Ming Lei <tom.leiming@gmail.com> To: Jens Axboe <axboe@fb.com>, linux-kernel@vger.kernel.org Cc: linux-block@vger.kernel.org, Christoph Hellwig <hch@infradead.org>, Ming Lei <tom.leiming@gmail.com>, Alasdair Kergon <agk@redhat.com>, Mike Snitzer <snitzer@redhat.com>, "maintainer:DEVICE-MAPPER LVM" <dm-devel@redhat.com>, Shaohua Li <shli@kernel.org>, "open list:SOFTWARE RAID Multiple Disks SUPPORT" <linux-raid@vger.kernel.org> Subject: [PATCH v1 12/54] dm: limit the max bio size as BIO_MAX_PAGES * PAGE_SIZE Date: Tue, 27 Dec 2016 23:56:01 +0800 [thread overview] Message-ID: <1482854250-13481-13-git-send-email-tom.leiming@gmail.com> (raw) In-Reply-To: <1482854250-13481-1-git-send-email-tom.leiming@gmail.com> For BIO based DM, some targets aren't ready for dealing with bigger incoming bio than 1Mbyte, such as crypt target. Signed-off-by: Ming Lei <tom.leiming@gmail.com> --- drivers/md/dm.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 3086da5664f3..6139bf7623f7 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -899,7 +899,16 @@ int dm_set_target_max_io_len(struct dm_target *ti, sector_t len) return -EINVAL; } - ti->max_io_len = (uint32_t) len; + /* + * BIO based queue uses its own splitting. When multipage bvecs + * is switched on, size of the incoming bio may be too big to + * be handled in some targets, such as crypt. + * + * When these targets are ready for the big bio, we can remove + * the limit. + */ + ti->max_io_len = min_t(uint32_t, len, + (BIO_MAX_PAGES * PAGE_SIZE)); return 0; } -- 2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: Ming Lei <tom.leiming@gmail.com> To: Jens Axboe <axboe@fb.com>, linux-kernel@vger.kernel.org Cc: linux-block@vger.kernel.org, Christoph Hellwig <hch@infradead.org>, Ming Lei <tom.leiming@gmail.com>, Alasdair Kergon <agk@redhat.com>, Mike Snitzer <snitzer@redhat.com>, dm-devel@redhat.com (maintainer:DEVICE-MAPPER (LVM)), Shaohua Li <shli@kernel.org>, linux-raid@vger.kernel.org (open list:SOFTWARE RAID (Multiple Disks) SUPPORT) Subject: [PATCH v1 12/54] dm: limit the max bio size as BIO_MAX_PAGES * PAGE_SIZE Date: Tue, 27 Dec 2016 23:56:01 +0800 [thread overview] Message-ID: <1482854250-13481-13-git-send-email-tom.leiming@gmail.com> (raw) In-Reply-To: <1482854250-13481-1-git-send-email-tom.leiming@gmail.com> For BIO based DM, some targets aren't ready for dealing with bigger incoming bio than 1Mbyte, such as crypt target. Signed-off-by: Ming Lei <tom.leiming@gmail.com> --- drivers/md/dm.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 3086da5664f3..6139bf7623f7 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -899,7 +899,16 @@ int dm_set_target_max_io_len(struct dm_target *ti, sector_t len) return -EINVAL; } - ti->max_io_len = (uint32_t) len; + /* + * BIO based queue uses its own splitting. When multipage bvecs + * is switched on, size of the incoming bio may be too big to + * be handled in some targets, such as crypt. + * + * When these targets are ready for the big bio, we can remove + * the limit. + */ + ti->max_io_len = min_t(uint32_t, len, + (BIO_MAX_PAGES * PAGE_SIZE)); return 0; } -- 2.7.4
next prev parent reply other threads:[~2016-12-27 15:56 UTC|newest] Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-12-27 15:55 [PATCH v1 00/54] block: support multipage bvec Ming Lei 2016-12-27 15:55 ` [Cluster-devel] " Ming Lei 2016-12-27 15:55 ` Ming Lei 2016-12-27 15:55 ` Ming Lei 2016-12-27 15:55 ` Ming Lei 2016-12-27 15:55 ` [PATCH v1 01/54] block: drbd: comment on direct access bvec table Ming Lei 2016-12-27 15:55 ` [PATCH v1 02/54] block: loop: comment on direct access to " Ming Lei 2016-12-27 15:55 ` [PATCH v1 03/54] kernel/power/swap.c: " Ming Lei 2016-12-27 15:55 ` Ming Lei 2016-12-27 15:55 ` [PATCH v1 04/54] mm: page_io.c: " Ming Lei 2016-12-27 15:55 ` Ming Lei 2016-12-27 15:55 ` [PATCH v1 05/54] fs/buffer: " Ming Lei 2016-12-27 15:55 ` [PATCH v1 06/54] f2fs: f2fs_read_end_io: " Ming Lei 2016-12-27 15:55 ` Ming Lei 2016-12-27 15:55 ` [PATCH v1 07/54] bcache: " Ming Lei 2016-12-27 15:55 ` Ming Lei 2016-12-30 16:56 ` Coly Li 2016-12-30 16:56 ` Coly Li 2016-12-27 15:55 ` [PATCH v1 08/54] block: comment on bio_alloc_pages() Ming Lei 2016-12-27 15:55 ` Ming Lei 2016-12-30 10:40 ` Coly Li 2016-12-30 10:40 ` Coly Li 2016-12-30 11:06 ` Coly Li 2016-12-30 11:06 ` Coly Li 2016-12-27 15:55 ` [PATCH v1 09/54] block: comment on bio_iov_iter_get_pages() Ming Lei 2016-12-27 15:55 ` [PATCH v1 10/54] block: introduce flag QUEUE_FLAG_NO_MP Ming Lei 2016-12-27 15:56 ` [PATCH v1 11/54] md: set NO_MP for request queue of md Ming Lei 2016-12-27 15:56 ` Ming Lei 2016-12-27 15:56 ` Ming Lei [this message] 2016-12-27 15:56 ` [PATCH v1 12/54] dm: limit the max bio size as BIO_MAX_PAGES * PAGE_SIZE Ming Lei 2017-01-03 16:43 ` Mike Snitzer 2017-01-03 16:43 ` Mike Snitzer 2017-01-06 3:30 ` Ming Lei 2017-01-06 3:30 ` Ming Lei 2016-12-27 15:56 ` [PATCH v1 13/54] block: comments on bio_for_each_segment[_all] Ming Lei 2016-12-27 15:56 ` [PATCH v1 14/54] block: introduce multipage/single page bvec helpers Ming Lei 2016-12-27 15:56 ` [PATCH v1 15/54] block: implement sp version of bvec iterator helpers Ming Lei 2016-12-27 15:56 ` [PATCH v1 16/54] block: introduce bio_for_each_segment_mp() Ming Lei 2016-12-27 15:56 ` [PATCH v1 17/54] block: introduce bio_clone_sp() Ming Lei 2016-12-27 15:56 ` [PATCH v1 18/54] bvec_iter: introduce BVEC_ITER_ALL_INIT Ming Lei 2016-12-27 15:56 ` [PATCH v1 19/54] block: bounce: avoid direct access to bvec table Ming Lei 2016-12-27 15:56 ` [PATCH v1 20/54] block: bounce: don't access bio->bi_io_vec in copy_to_high_bio_irq Ming Lei 2016-12-27 15:56 ` [PATCH v1 21/54] block: introduce bio_can_convert_to_sp() Ming Lei 2016-12-27 15:56 ` [PATCH v1 22/54] block: bounce: convert multipage bvecs into singlepage Ming Lei 2016-12-27 15:56 ` [PATCH v1 23/54] bcache: handle bio_clone() & bvec updating for multipage bvecs Ming Lei 2016-12-27 15:56 ` Ming Lei 2016-12-30 11:01 ` Coly Li 2016-12-30 11:01 ` Coly Li 2016-12-31 10:29 ` Ming Lei 2016-12-31 10:29 ` Ming Lei 2016-12-31 10:29 ` Ming Lei 2016-12-27 15:56 ` [PATCH v1 24/54] blk-merge: compute bio->bi_seg_front_size efficiently Ming Lei 2016-12-27 15:56 ` [PATCH v1 25/54] block: blk-merge: try to make front segments in full size Ming Lei 2016-12-27 15:56 ` [PATCH v1 26/54] block: blk-merge: remove unnecessary check Ming Lei 2016-12-27 15:56 ` [PATCH v1 27/54] block: use bio_for_each_segment_mp() to compute segments count Ming Lei 2016-12-27 15:56 ` [PATCH v1 28/54] block: use bio_for_each_segment_mp() to map sg Ming Lei 2016-12-27 15:56 ` [PATCH v1 29/54] block: introduce bvec_for_each_sp_bvec() Ming Lei 2016-12-27 15:56 ` [PATCH v1 30/54] block: bio: introduce single/multi page version of bio_for_each_segment_all() Ming Lei 2016-12-27 15:56 ` [PATCH v1 31/54] block: introduce bio_segments_all() Ming Lei 2017-01-16 3:19 ` [PATCH v1 00/54] block: support multipage bvec Ming Lei 2017-01-16 15:18 ` Christoph Hellwig 2017-01-17 2:40 ` Ming Lei 2017-01-17 7:50 ` Christoph Hellwig 2017-01-17 8:13 ` Ming Lei
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