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Message-ID: <20190416022315.GA153476@laptop> Date: Mon, 15 Apr 2019 23:23:55 -0300 From: Marcos Paulo de Souza <marcos.souza.org@...il.com> To: Chaitanya Kulkarni <Chaitanya.Kulkarni@....com> Cc: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Jens Axboe <axboe@...nel.dk>, "open list:BLOCK LAYER" <linux-block@...r.kernel.org> Subject: Re: [PATCH 2/3] blk-mq.c: Rework documention of blk_mq_init_sq_queue function On Sun, Apr 14, 2019 at 09:02:13PM +0000, Chaitanya Kulkarni wrote: > On 4/13/19 8:11 PM, Marcos Paulo de Souza wrote: > > Describing better what the function does, and what the arguments are > > meant for. > > > > Signed-off-by: Marcos Paulo de Souza <marcos.souza.org@...il.com> > > --- > > block/blk-mq.c | 17 ++++++++++++++--- > > 1 file changed, 14 insertions(+), 3 deletions(-) > > > > diff --git a/block/blk-mq.c b/block/blk-mq.c > > index 4a8277a54c03..fd0bf89b8a73 100644 > > --- a/block/blk-mq.c > > +++ b/block/blk-mq.c > > @@ -2675,9 +2675,20 @@ struct request_queue *blk_mq_init_queue(struct blk_mq_tag_set *set) > > } > > EXPORT_SYMBOL(blk_mq_init_queue); > > > > -/* > > - * Helper for setting up a queue with mq ops, given queue depth, and > > - * the passed in mq ops flags. > > +/** > Is following line beyond 80 columns ? Actually it hit the limit of 80 columns. > > + * blk_mq_init_sq_queue - Create a new request queue with a SQ queue and tag set > It will be great if we describe what SQ in the above line, otherwise we > stating just obvious here. You're right, I will change the "SQ" for "only one hw_queue (SQ)", to describe what is the SQ. > > + * @set: tag set to be associated by the newly created request queue > > + * @ops: operations to be associated with @set > > + * @queue_depth: number of tags of @set > > + * @set_flags: flags of @set > > + * > > + * Description: > > + * @set is initialized using @ops, @queue_depth, @set_flags, and using only one > > + * hw_queue (SQ). Later on blk_mq_alloc_tag_set() is called to validate and/or > > + * adjust values of the tag set. blk_mq_init_queue() is called passing @set as > > + * argument, returning a new request queue with @set associated. > > + * > > + * Returns the newly created request queue on success, or ERR_PTR() on failure. > > */ > > struct request_queue *blk_mq_init_sq_queue(struct blk_mq_tag_set *set, > > const struct blk_mq_ops *ops, > > > -- Thanks, Marcos
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