From: Manfred Spraul <manfred@colorfullife.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: "Herton R. Krzesinski" <herton@redhat.com>,
linux-kernel@vger.kernel.org, Davidlohr Bueso <dave@stgolabs.net>,
Rafael Aquini <aquini@redhat.com>, Joe Perches <joe@perches.com>,
Aristeu Rozanski <aris@redhat.com>,
djeffery@redhat.com
Subject: Re: [PATCH 2/2] ipc,sem: remove uneeded sem_undo_list lock usage in exit_sem()
Date: Tue, 11 Aug 2015 20:31:05 +0200 [thread overview]
Message-ID: <55CA3F69.7040101@colorfullife.com> (raw)
In-Reply-To: <1439313556-13923-3-git-send-email-herton@redhat.com>
On 08/11/2015 07:19 PM, Herton R. Krzesinski wrote:
> After we acquire the sma->sem_perm lock in exit_sem(), we are protected against
> a racing IPC_RMID operation. Also at that point, we are the last user of
> sem_undo_list. Therefore it isn't required that we acquire or use ulp->lock.
>
> Signed-off-by: Herton R. Krzesinski <herton@redhat.com>
Acked-by: Manfred Spraul <manfred@colorfullife.com>
--
Manfred
prev parent reply other threads:[~2015-08-11 18:31 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-11 17:19 ipc,sem: fix use after free on IPC_RMID v2 Herton R. Krzesinski
2015-08-11 17:19 ` [PATCH 1/2 v2] ipc,sem: fix use after free on IPC_RMID after a task using same semaphore set exits Herton R. Krzesinski
2015-08-11 18:30 ` Manfred Spraul
2015-08-11 17:19 ` [PATCH 2/2] ipc,sem: remove uneeded sem_undo_list lock usage in exit_sem() Herton R. Krzesinski
2015-08-11 18:31 ` Manfred Spraul [this message]
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