linux-kernel - Re: [PATCH 01/11] blk: remove bio_set arg from blk_queue

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Message-Id: <F684F05A-679F-4704-A70E-7C1EE92B83E7@lightnvm.io>
Date:   Sat, 22 Apr 2017 11:16:23 +0200
From:   Javier González <jg@...htnvm.io>
To:     NeilBrown <neilb@...e.com>
Cc:     Jens Axboe <axboe@...nel.dk>, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 01/11] blk: remove bio_set arg from blk_queue_split()

> On 20 Apr 2017, at 07.38, NeilBrown <neilb@...e.com> wrote:
> 
> blk_queue_split() is always called with the last arg being q->bio_split,
> where 'q' is the first arg.
> 
> Also blk_queue_split() sometimes uses the passed-in 'bs' and sometimes uses
> q->bio_split.
> 
> This is inconsistent and unnecessary.  Remove the last arg and always use
> q->bio_split inside blk_queue_split()
> 
> Signed-off-by: NeilBrown <neilb@...e.com>
> ---
> block/blk-core.c              |    2 +-
> block/blk-merge.c             |    9 ++++-----
> block/blk-mq.c                |    2 +-
> drivers/block/drbd/drbd_req.c |    2 +-
> drivers/block/pktcdvd.c       |    2 +-
> drivers/block/ps3vram.c       |    2 +-
> drivers/block/rsxx/dev.c      |    2 +-
> drivers/block/umem.c          |    2 +-
> drivers/block/zram/zram_drv.c |    2 +-
> drivers/lightnvm/rrpc.c       |    2 +-
> drivers/md/md.c               |    2 +-
> drivers/s390/block/dcssblk.c  |    2 +-
> drivers/s390/block/xpram.c    |    2 +-
> include/linux/blkdev.h        |    3 +--
> 14 files changed, 17 insertions(+), 19 deletions(-)
> 

It most probably made it to Jens' tree after you made these changes, but
in drivers/lightnvm/pblk-init.c we also use blk_queue_split() in a
couple of places inside pblk_rw_io().

Thanks,
Javier.

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