linux-kernel - Re: [PATCH 0/5] percpu

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Message-ID: <1382995746.19256.756.camel@haakon3.risingtidesystems.com>
Date:	Mon, 28 Oct 2013 14:29:06 -0700
From:	"Nicholas A. Bellinger" <nab@...ux-iscsi.org>
To:	Alexander Gordeev <agordeev@...hat.com>
Cc:	Kent Overstreet <kmo@...erainc.com>,
	Oleg Nesterov <oleg@...hat.com>, Jens Axboe <axboe@...nel.dk>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/5] percpu_ida: Various tweaks

On Mon, 2013-10-28 at 11:04 +0100, Alexander Gordeev wrote:
> Hi Kent,
> 
> Here is an update of few behaviours which caught my eye.
> I have not tested any, so it is up to your judgement ;)
> 
> Alexander Gordeev (5):
>   percpu_ida: Fix data race on cpus_have_tags cpumask
>   percpu_ida: Move waking up waiters out of atomic contexts
>   percpu_ida: Optimize freeing tags when maximum cache size is 1
>   percpu_ida: Sanity check initialization parameters
>   percpu_ida: Allow variable maximum number of cached tags
> 
>  block/blk-mq-tag.c         |    9 +++++----
>  include/linux/percpu_ida.h |    5 +++--
>  lib/percpu_ida.c           |   38 ++++++++++++++++++++++++++++----------
>  3 files changed, 36 insertions(+), 16 deletions(-)
> 

Hi Alexander,

So this series is atop Shaohua's conversion blk-mq patch to use
percpu_ida, right..?

I'll wait for Kent's feedback on these, and end-up dropping the
blk-mq-tag part from Patch #5 for the moment..

--nab

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