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From: Kent Overstreet <kent.overstreet@gmail.com>
To: Ming Lei <ming.lei@redhat.com>, Jens Axboe <axboe@fb.com>
Cc: Christoph Hellwig <hch@infradead.org>,
	Alexander Viro <viro@zeniv.linux.org.uk>,
	David Sterba <dsterba@suse.cz>, Huang Ying <ying.huang@intel.com>,
	linux-kernel@vger.kernel.org, linux-block@vger.kernel.org,
	linux-fsdevel@vger.kernel.org, linux-mm@kvack.org,
	Theodore Ts'o <tytso@mit.edu>,
	"Darrick J . Wong" <darrick.wong@oracle.com>,
	Coly Li <colyli@suse.de>, Filipe Manana <fdmanana@gmail.com>
Subject: Re: [RESEND PATCH V5 00/33] block: support multipage bvec
Date: Fri, 25 May 2018 00:53:06 -0400	[thread overview]
Message-ID: <20180525045306.GB8740@kmo-pixel> (raw)
In-Reply-To: <20180525034621.31147-1-ming.lei@redhat.com>

On Fri, May 25, 2018 at 11:45:48AM +0800, Ming Lei wrote:
> Hi,
> 
> This patchset brings multipage bvec into block layer:

patch series looks sane to me. goddamn that's a lot of renaming.

Things are going to get interesting when we start sticking compound pages in the
page cache, there'll be some interesting questions of semantics to deal with
then but I think getting this will only help w.r.t. plumbing that through and
not dealing with 4k pages unnecessarily - but I think even if we were to decide
that merging in bio_add_page() is not the way to go when the upper layers are
passing compound pages around already, this patch series helps because
regardless at some point everything under generic_make_request() is going to
have to deal with segments that are more than one page, and this patch series
makes that happen. So incremental progress.

Jens, any objections to getting this in?

  parent reply	other threads:[~2018-05-25  4:53 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-25  3:45 [RESEND PATCH V5 00/33] block: support multipage bvec Ming Lei
2018-05-25  3:45 ` [RESEND PATCH V5 01/33] block: rename bio_for_each_segment* with bio_for_each_page* Ming Lei
2018-05-25  3:45 ` [RESEND PATCH V5 02/33] block: rename rq_for_each_segment as rq_for_each_page Ming Lei
2018-05-25  3:45 ` [RESEND PATCH V5 03/33] block: rename bio_segments() with bio_pages() Ming Lei
2018-05-25  3:45 ` [RESEND PATCH V5 04/33] block: introduce multipage page bvec helpers Ming Lei
2018-05-25  3:45 ` [RESEND PATCH V5 05/33] block: introduce bio_for_each_segment() Ming Lei
2018-05-25  3:45 ` [RESEND PATCH V5 06/33] block: use bio_for_each_segment() to compute segments count Ming Lei
2018-05-25  3:45 ` [RESEND PATCH V5 07/33] block: use bio_for_each_segment() to map sg Ming Lei
2018-05-25  3:45 ` [RESEND PATCH V5 08/33] block: introduce segment_last_page() Ming Lei
2018-05-25  3:45 ` [RESEND PATCH V5 09/33] fs/buffer.c: use bvec iterator to truncate the bio Ming Lei
2018-05-25  3:45 ` [RESEND PATCH V5 10/33] btrfs: use segment_last_page to get bio's last page Ming Lei
2018-05-25  3:45 ` [RESEND PATCH V5 11/33] block: implement bio_pages_all() via bio_for_each_page_all() Ming Lei
2018-05-25  3:46 ` [RESEND PATCH V5 12/33] block: introduce bio_segments() Ming Lei
2018-05-25  4:42   ` Kent Overstreet
2018-05-25  3:46 ` [RESEND PATCH V5 13/33] block: introduce rq_for_each_segment() Ming Lei
2018-05-25  3:46 ` [RESEND PATCH V5 14/33] block: loop: pass segments to iov_iter Ming Lei
2018-05-25  3:46 ` [RESEND PATCH V5 15/33] block: introduce bio_clone_seg_bioset() Ming Lei
2018-05-25  3:46 ` [RESEND PATCH V5 16/33] dm: clone bio via bio_clone_seg_bioset Ming Lei
2018-05-25  3:46 ` [RESEND PATCH V5 17/33] block: bio: introduce bio_for_each_page_all2 and bio_for_each_segment_all Ming Lei
2018-05-25  3:46 ` [RESEND PATCH V5 18/33] block: deal with dirtying pages for multipage bvec Ming Lei
2018-05-25  3:46 ` [RESEND PATCH V5 19/33] block: convert to bio_for_each_page_all2() Ming Lei
2018-05-25  3:46 ` [RESEND PATCH V5 20/33] md/dm/bcache: conver to bio_for_each_page_all2 and bio_for_each_segment Ming Lei
2018-05-25  3:46 ` [RESEND PATCH V5 21/33] fs: conver to bio_for_each_page_all2 Ming Lei
2018-05-25  3:46 ` [RESEND PATCH V5 22/33] btrfs: " Ming Lei
2018-05-25  3:46 ` [RESEND PATCH V5 23/33] ext4: " Ming Lei
2018-05-25  3:46 ` [RESEND PATCH V5 24/33] f2fs: " Ming Lei
2018-05-28  7:29   ` Chao Yu
2018-05-25  3:46 ` [RESEND PATCH V5 25/33] xfs: " Ming Lei
2018-05-25  3:46 ` [RESEND PATCH V5 26/33] exofs: " Ming Lei
2018-05-25  3:46 ` [RESEND PATCH V5 27/33] gfs2: " Ming Lei
2018-05-25  3:46 ` [RESEND PATCH V5 28/33] block: kill bio_for_each_page_all() Ming Lei
2018-05-25  3:46 ` [RESEND PATCH V5 29/33] block: rename bio_for_each_page_all2 as bio_for_each_page_all Ming Lei
2018-05-25  3:46 ` [RESEND PATCH V5 30/33] block: enable multipage bvecs Ming Lei
2018-05-25  3:46 ` [RESEND PATCH V5 31/33] block: bio: pass segments to bio if bio_add_page() is bypassed Ming Lei
2018-05-25  3:46 ` [RESEND PATCH V5 32/33] block: always define BIO_MAX_PAGES as 256 Ming Lei
2018-05-25  3:46 ` [RESEND PATCH V5 33/33] block: document usage of bio iterator helpers Ming Lei
2018-05-25 16:16   ` Randy Dunlap
2018-05-25  4:53 ` Kent Overstreet [this message]
2018-05-25 16:30   ` [RESEND PATCH V5 00/33] block: support multipage bvec Jens Axboe
2018-05-27  7:23     ` Ming Lei
2018-05-28  1:44       ` Jens Axboe
2018-05-28  2:30         ` Ming Lei
2018-06-01  8:43           ` Christoph Hellwig
2018-06-01 23:55             ` Ming Lei
2018-06-01  8:35         ` Christoph Hellwig
2018-06-02  3:29           ` Ming Lei
2018-06-01 14:09 ` David Sterba
2018-06-08 12:50   ` Ming Lei

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