linux-kernel - Re: [PATCH 8/8] fs/aio: Use rcu_work instead of explicit rcu and work item

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Message-ID: <20180329174122.GA388343@devbig577.frc2.facebook.com>
Date:   Thu, 29 Mar 2018 10:41:22 -0700
From:   Tejun Heo <tj@...nel.org>
To:     Oleg Nesterov <oleg@...hat.com>
Cc:     torvalds@...ux-foundation.org, jannh@...gle.com,
        paulmck@...ux.vnet.ibm.com, bcrl@...ck.org,
        viro@...iv.linux.org.uk, kent.overstreet@...il.com,
        security@...nel.org, linux-kernel@...r.kernel.org,
        kernel-team@...com
Subject: Re: [PATCH 8/8] fs/aio: Use rcu_work instead of explicit rcu and
 work item

Hello,

On Thu, Mar 29, 2018 at 06:49:25PM +0200, Oleg Nesterov wrote:
> Still no use-case... But yes, I forgot this is needed for correctness.
> 
> OK, thanks for your patience. But fyi now I hate this interface even more,
> exactly because I was technically wrong in this discussion ;)

Yeah, we might as well omit it for now and add it later when it's
actually needed.  It's just that given that queue and flush are the
two core interfaces, I didn't want to leave it out, and the current
implementation is the lowest-effort one.  I'd be happy to make it
better if you have good suggestions.

Thanks.

-- 
tejun