linux-kernel - Re: [patch] blk-mq: avoid excessive boot delays with large lun counts

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Message-ID: <x49twp8xsen.fsf@segfault.boston.devel.redhat.com>
Date:	Fri, 30 Oct 2015 11:55:28 -0400
From:	Jeff Moyer <jmoyer@...hat.com>
To:	Ming Lei <tom.leiming@...il.com>
Cc:	Jens Axboe <axboe@...nel.dk>, Jason Luo <zhangqing.luo@...cle.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Guru Anbalagane <guru.anbalagane@...cle.com>,
	Feng Jin <joe.jin@...cle.com>, Tejun Heo <tj@...nel.org>
Subject: Re: [patch] blk-mq: avoid excessive boot delays with large lun counts

Ming Lei <tom.leiming@...il.com> writes:

> The following change should be put into blk_mq_init_hctx() too.
>
>      hctx->flags = set->flags & ~BLK_MQ_F_TAG_SHARED;
>
> and the idea is that we always figure out the shared flag in
> following blk_mq_update_tag_set_depth().

OK, this is the part I was missing from your earlier mails.  That makes
sense, I'll update the patch and repost.

Thanks, Ming!

-Jeff
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