From: Ming Lei <ming.lei@redhat.com>
To: NeilBrown <neilb@suse.com>
Cc: Jens Axboe <axboe@kernel.dk>,
linux-block@vger.kernel.org, Ming Lei <tom.leiming@gmail.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 02/13] blk: replace bioset_create_nobvec() with a flags arg to bioset_create()
Date: Tue, 2 May 2017 17:40:21 +0800 [thread overview]
Message-ID: <20170502094019.GA1803@ming.t460p> (raw)
In-Reply-To: <149369654407.5146.12779672368228096310.stgit@noble>
On Tue, May 02, 2017 at 01:42:24PM +1000, NeilBrown wrote:
> "flags" arguments are often seen as good API design as they allow
> easy extensibility.
> bioset_create_nobvec() is implemented internally as a variation in
> flags passed to __bioset_create().
>From driver's view, this flag has document benifit too.
>
> To support future extension, make the internal structure part of the
> API.
> i.e. add a 'flags' argument to bioset_create() and discard
> bioset_create_nobvec().
>
> Note that the bio_split allocations in drivers/md/raid* do not need
> the bvec mempool - they should have used bioset_create_nobvec().
>
> Suggested-by: Christoph Hellwig <hch@infradead.org>
> Signed-off-by: NeilBrown <neilb@suse.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Thanks,
Ming
next prev parent reply other threads:[~2017-05-02 9:40 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-02 3:42 [PATCH 00/13] block: assorted cleanup for bio splitting and cloning NeilBrown
2017-05-02 3:42 ` [PATCH 05/13] block: Improvements to bounce-buffer handling NeilBrown
2017-05-02 8:13 ` Christoph Hellwig
2017-05-02 11:56 ` Ming Lei
2017-05-02 3:42 ` [PATCH 03/13] blk: make the bioset rescue_workqueue optional NeilBrown
2017-05-02 8:14 ` Christoph Hellwig
2017-05-02 11:00 ` Ming Lei
2017-05-02 22:10 ` NeilBrown
2017-05-02 22:34 ` [PATCH 03/13 V2] " NeilBrown
2017-05-03 3:24 ` Ming Lei
2017-05-02 3:42 ` [PATCH 02/13] blk: replace bioset_create_nobvec() with a flags arg to bioset_create() NeilBrown
2017-05-02 8:06 ` Christoph Hellwig
2017-05-02 21:47 ` NeilBrown
2017-05-02 9:40 ` Ming Lei [this message]
2017-05-02 3:42 ` [PATCH 04/13] blk: use non-rescuing bioset for q->bio_split NeilBrown
2017-05-02 11:54 ` Ming Lei
2017-05-02 23:21 ` [PATCH 04/13 V2] " NeilBrown
2017-05-02 3:42 ` [PATCH 01/13] blk: remove bio_set arg from blk_queue_split() NeilBrown
2017-05-02 10:44 ` javigon
2017-05-02 3:42 ` [PATCH 08/13] pktcdvd: use bio_clone_fast() instead of bio_clone() NeilBrown
2017-05-02 3:42 ` [PATCH 09/13] lightnvm/pblk-read: use bio_clone_fast() NeilBrown
2017-05-02 8:15 ` Christoph Hellwig
2017-05-02 11:22 ` Javier González
2017-05-02 21:51 ` NeilBrown
2017-05-03 6:42 ` Javier González
2017-05-02 3:42 ` [PATCH 07/13] drbd: use bio_clone_fast() instead of bio_clone() NeilBrown
2017-05-02 23:20 ` [PATCH 07/13 V2] " NeilBrown
2017-05-02 3:42 ` [PATCH 10/13] xen-blkfront: remove bio splitting NeilBrown
2017-05-02 8:15 ` Christoph Hellwig
2017-05-02 3:42 ` [PATCH 06/13] rbd: use bio_clone_fast() instead of bio_clone() NeilBrown
2017-05-02 3:42 ` [PATCH 13/13] block: don't check for BIO_MAX_PAGES in blk_bio_segment_split() NeilBrown
2017-05-02 8:15 ` Christoph Hellwig
2017-05-02 10:22 ` Ming Lei
2017-05-02 22:54 ` NeilBrown
2017-05-02 23:50 ` Ming Lei
2017-05-02 3:42 ` [PATCH 12/13] block: remove bio_clone() and all references NeilBrown
2017-05-02 3:42 ` [PATCH 11/13] bcache: use kmalloc to allocate bio in bch_data_verify() NeilBrown
2017-05-11 0:58 ` [PATCH 00/13] block: assorted cleanup for bio splitting and cloning NeilBrown
2017-06-16 5:54 ` NeilBrown
2017-06-16 6:42 ` Christoph Hellwig
2017-06-16 7:30 ` NeilBrown
2017-06-16 7:34 ` Christoph Hellwig
2017-06-16 20:45 ` Jens Axboe
2017-06-18 4:40 ` NeilBrown
2017-06-18 4:40 ` NeilBrown
-- strict thread matches above, loose matches on Subject: below --
2017-06-18 4:38 NeilBrown
2017-06-18 4:38 ` [PATCH 02/13] blk: replace bioset_create_nobvec() with a flags arg to bioset_create() NeilBrown
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