Message-ID: <5151E590.70909@surriel.com>
Date: Tue, 26 Mar 2013 14:14:40 -0400
From: Rik van Riel <riel@surriel.com>
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To: Davidlohr Bueso <davidlohr.bueso@hp.com>
CC: Emmanuel Benisty <benisty.e@gmail.com>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Andrew Morton <akpm@linux-foundation.org>, hhuang@redhat.com,
        "Low, Jason" <jason.low2@hp.com>,
        Michel Lespinasse <walken@google.com>,
        Larry Woodman <lwoodman@redhat.com>,
        "Vinod, Chegu" <chegu_vinod@hp.com>
Subject: Re: ipc,sem: sysv semaphore scalability
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On 03/26/2013 01:59 PM, Davidlohr Bueso wrote:

> From: Davidlohr Bueso <davidlohr.bueso@hp.com>
> Subject: [PATCH] ipc, sem: prevent possible deadlock
>
> In semctl_main(), when cmd == GETALL, we're locking
> sma->sem_perm.lock (through sem_lock_and_putref), yet
> after the conditional, we lock it again.
> Unlock sma right after exiting the conditional.
>
> Signed-off-by: Davidlohr Bueso <davidlohr.bueso@hp.com>

Reviewed-by: Rik van Riel <riel@redhat.com>

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