linux-kernel - Re: serial percpu_ref draining in exit

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Message-ID: <20150319210051.GE19657@htj.duckdns.org>
Date:	Thu, 19 Mar 2015 17:00:51 -0400
From:	Tejun Heo <tj@...nel.org>
To:	Jeff Moyer <jmoyer@...hat.com>
Cc:	Jens Axboe <axboe@...nel.dk>, kent.overstreet@...il.com,
	Benjamin LaHaise <bcrl@...ck.org>, linux-kernel@...r.kernel.org
Subject: Re: serial percpu_ref draining in exit_aio()

On Thu, Mar 19, 2015 at 04:58:33PM -0400, Jeff Moyer wrote:
> Do you really want to do memory allocation in the exit path?  That
> sounds like a bad idea to me.  (Of course, now you're going to point out
> all the places that currently happens, right?  ;-)

I think we just need a counter there - let everyone count down as they
exit and the last one trigger the completion, no?

-- 
tejun
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