From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andreas Herrmann Subject: Re: [PATCH 02/15] block: don't call blk_throtl_stat_add for non-READ/WRITE commands Date: Fri, 20 Jan 2023 09:55:31 +0100 Message-ID: References: <20230117081257.3089859-1-hch@lst.de> <20230117081257.3089859-3-hch@lst.de> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1674204933; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=e4Q1VHGGcDhGS3UBPXctvtuTi2sVs/AqValPMfoWSYE=; b=Su6hdgzchZCXt2HTOTOjgHNxtpHGqdPLqfJJkMOHMurMPCV4yMqMCnYQAezfefQdiYvAvk wL8S7fl568RRar4j3Hm3zw+ZvcSwvHncGjZwdIlEuZ6x+BAvTAIT85Tk/HwB2A2H7zQmuv rZCDaypwyod4q5cySeYww2Zxa0g8KTA= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1674204933; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=e4Q1VHGGcDhGS3UBPXctvtuTi2sVs/AqValPMfoWSYE=; b=j4qsZrhR7S36Hkx+UjJnhv91ntaLtfw16raFwIR7bcP7jxeZa/787+JmWt1Yc0WjQHNstZ 3NVG7kHoBxNc5fDA== Content-Disposition: inline In-Reply-To: <20230117081257.3089859-3-hch-jcswGhMUV9g@public.gmane.org> List-ID: Content-Type: text/plain; charset="utf-8" To: Christoph Hellwig Cc: Jens Axboe , Tejun Heo , Josef Bacik , linux-block-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org On Tue, Jan 17, 2023 at 09:12:44AM +0100, Christoph Hellwig wrote: > blk_throtl_stat_add is called from blk_stat_add explicitly, unlike the > other stats that go through q->stats->callbacks. To prepare for cgroup > data moving to the gendisk, ensure blk_throtl_stat_add is only called > for the plain READ and WRITE commands that it actually handles internally, > as blk_stat_add can also be called for passthrough commands on queues that > do not have a genisk associated with them. ^^^^^^ gendisk > > Signed-off-by: Christoph Hellwig > --- > block/blk-stat.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) Looks good to me. Feel free to add Reviewed-by: Andreas Herrmann > diff --git a/block/blk-stat.c b/block/blk-stat.c > index 2ea01b5c1aca04..c6ca16abf911e2 100644 > --- a/block/blk-stat.c > +++ b/block/blk-stat.c > @@ -58,7 +58,8 @@ void blk_stat_add(struct request *rq, u64 now) > > value = (now >= rq->io_start_time_ns) ? now - rq->io_start_time_ns : 0; > > - blk_throtl_stat_add(rq, value); > + if (req_op(rq) == REQ_OP_READ || req_op(rq) == REQ_OP_WRITE) > + blk_throtl_stat_add(rq, value); > > rcu_read_lock(); > cpu = get_cpu(); > -- > 2.39.0 > -- Regards, Andreas SUSE Software Solutions Germany GmbH Frankenstrasse 146, 90461 Nürnberg, Germany GF: Ivo Totev, Andrew Myers, Andrew McDonald, Martje Boudien Moerman (HRB 36809, AG Nürnberg)