From: Mel Gorman <mgorman@suse.de>
To: Rik van Riel <riel@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Linux-MM <linux-mm@kvack.org>,
Linux-Netdev <netdev@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
David Miller <davem@davemloft.net>, Neil Brown <neilb@suse.de>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Mike Christie <michaelc@cs.wisc.edu>,
Eric B Munson <emunson@mgebm.net>,
Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Subject: Re: [PATCH 01/17] mm: sl[au]b: Add knowledge of PFMEMALLOC reserve pages
Date: Fri, 22 Jun 2012 10:34:32 +0100 [thread overview]
Message-ID: <20120622093432.GA8271@suse.de> (raw)
In-Reply-To: <4FE39290.8020609@redhat.com>
On Thu, Jun 21, 2012 at 05:30:56PM -0400, Rik van Riel wrote:
> On 06/20/2012 07:43 AM, Mel Gorman wrote:
>
> >+/* Clears ac->pfmemalloc if no slabs have pfmalloc set */
> >+static void check_ac_pfmemalloc(struct kmem_cache *cachep,
> >+ struct array_cache *ac)
> >+{
>
> >+ pfmemalloc_active = false;
> >+out:
> >+ spin_unlock_irqrestore(&l3->list_lock, flags);
> >+}
>
> The comment and the function do not seem to match.
>
Well spotted. There used to be ac->pfmemalloc and obviously I failed to
update the comment when it was removed.
> Otherwise, the patch looks reasonable.
Thanks.
--
Mel Gorman
SUSE Labs
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WARNING: multiple messages have this Message-ID (diff)
From: Mel Gorman <mgorman@suse.de>
To: Rik van Riel <riel@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Linux-MM <linux-mm@kvack.org>,
Linux-Netdev <netdev@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
David Miller <davem@davemloft.net>, Neil Brown <neilb@suse.de>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Mike Christie <michaelc@cs.wisc.edu>,
Eric B Munson <emunson@mgebm.net>,
Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Subject: Re: [PATCH 01/17] mm: sl[au]b: Add knowledge of PFMEMALLOC reserve pages
Date: Fri, 22 Jun 2012 10:34:32 +0100 [thread overview]
Message-ID: <20120622093432.GA8271@suse.de> (raw)
In-Reply-To: <4FE39290.8020609@redhat.com>
On Thu, Jun 21, 2012 at 05:30:56PM -0400, Rik van Riel wrote:
> On 06/20/2012 07:43 AM, Mel Gorman wrote:
>
> >+/* Clears ac->pfmemalloc if no slabs have pfmalloc set */
> >+static void check_ac_pfmemalloc(struct kmem_cache *cachep,
> >+ struct array_cache *ac)
> >+{
>
> >+ pfmemalloc_active = false;
> >+out:
> >+ spin_unlock_irqrestore(&l3->list_lock, flags);
> >+}
>
> The comment and the function do not seem to match.
>
Well spotted. There used to be ac->pfmemalloc and obviously I failed to
update the comment when it was removed.
> Otherwise, the patch looks reasonable.
Thanks.
--
Mel Gorman
SUSE Labs
next prev parent reply other threads:[~2012-06-22 9:34 UTC|newest]
Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-20 11:43 [PATCH 00/17] Swap-over-NBD without deadlocking V12 (resend) Mel Gorman
2012-06-20 11:43 ` Mel Gorman
2012-06-20 11:43 ` [PATCH 01/17] mm: sl[au]b: Add knowledge of PFMEMALLOC reserve pages Mel Gorman
2012-06-20 11:43 ` Mel Gorman
2012-06-21 21:30 ` Rik van Riel
2012-06-21 21:30 ` Rik van Riel
2012-06-22 9:34 ` Mel Gorman [this message]
2012-06-22 9:34 ` Mel Gorman
2012-06-20 11:43 ` [PATCH 02/17] mm: slub: Optimise the SLUB fast path to avoid pfmemalloc checks Mel Gorman
2012-06-20 11:43 ` Mel Gorman
2012-06-20 11:43 ` [PATCH 03/17] mm: Introduce __GFP_MEMALLOC to allow access to emergency reserves Mel Gorman
2012-06-20 11:43 ` Mel Gorman
2012-06-20 11:43 ` [PATCH 04/17] mm: allow PF_MEMALLOC from softirq context Mel Gorman
2012-06-20 11:43 ` Mel Gorman
2012-06-20 11:44 ` [PATCH 05/17] mm: Only set page->pfmemalloc when ALLOC_NO_WATERMARKS was used Mel Gorman
2012-06-20 11:44 ` Mel Gorman
2012-06-20 11:44 ` [PATCH 06/17] mm: Ignore mempolicies when using ALLOC_NO_WATERMARK Mel Gorman
2012-06-20 11:44 ` Mel Gorman
2012-06-20 11:44 ` [PATCH 07/17] net: Introduce sk_gfp_atomic() to allow addition of GFP flags depending on the individual socket Mel Gorman
2012-06-20 11:44 ` Mel Gorman
2012-06-20 12:06 ` Eric Dumazet
2012-06-20 12:06 ` Eric Dumazet
2012-06-20 14:20 ` Mel Gorman
2012-06-20 14:20 ` Mel Gorman
2012-06-20 11:44 ` [PATCH 08/17] net: Do not coalesce skbs belonging to PFMEMALLOC sockets Mel Gorman
2012-06-20 11:44 ` Mel Gorman
2012-06-20 12:04 ` Eric Dumazet
2012-06-20 12:04 ` Eric Dumazet
2012-06-20 13:36 ` Mel Gorman
2012-06-20 13:36 ` Mel Gorman
2012-06-20 13:51 ` Eric Dumazet
2012-06-20 13:51 ` Eric Dumazet
2012-06-20 14:18 ` Mel Gorman
2012-06-20 14:18 ` Mel Gorman
2012-06-20 11:44 ` [PATCH 09/17] netvm: Allow the use of __GFP_MEMALLOC by specific sockets Mel Gorman
2012-06-20 11:44 ` Mel Gorman
2012-06-20 11:44 ` [PATCH 10/17] netvm: Allow skb allocation to use PFMEMALLOC reserves Mel Gorman
2012-06-20 11:44 ` Mel Gorman
2012-06-21 16:09 ` Sebastian Andrzej Siewior
2012-06-21 16:09 ` Sebastian Andrzej Siewior
2012-06-22 10:00 ` Mel Gorman
2012-06-22 10:00 ` Mel Gorman
2012-06-21 16:30 ` Sebastian Andrzej Siewior
2012-06-21 16:30 ` Sebastian Andrzej Siewior
2012-06-21 16:38 ` Eric Dumazet
2012-06-21 16:38 ` Eric Dumazet
2012-06-21 16:43 ` Sebastian Andrzej Siewior
2012-06-21 16:43 ` Sebastian Andrzej Siewior
2012-06-22 10:54 ` Mel Gorman
2012-06-22 10:54 ` Mel Gorman
2012-06-22 11:27 ` Sebastian Andrzej Siewior
2012-06-22 11:27 ` Sebastian Andrzej Siewior
2012-06-20 11:44 ` [PATCH 11/17] netvm: Propagate page->pfmemalloc to skb Mel Gorman
2012-06-20 11:44 ` Mel Gorman
2012-06-20 11:44 ` [PATCH 12/17] netvm: Propagate page->pfmemalloc from skb_alloc_page " Mel Gorman
2012-06-20 11:44 ` Mel Gorman
2012-06-20 11:44 ` [PATCH 13/17] netvm: Set PF_MEMALLOC as appropriate during SKB processing Mel Gorman
2012-06-20 11:44 ` Mel Gorman
2012-06-20 11:44 ` [PATCH 14/17] mm: Micro-optimise slab to avoid a function call Mel Gorman
2012-06-20 11:44 ` Mel Gorman
2012-06-20 11:44 ` [PATCH 15/17] nbd: Set SOCK_MEMALLOC for access to PFMEMALLOC reserves Mel Gorman
2012-06-20 11:44 ` Mel Gorman
2012-06-20 11:44 ` [PATCH 16/17] mm: Throttle direct reclaimers if PF_MEMALLOC reserves are low and swap is backed by network storage Mel Gorman
2012-06-20 11:44 ` Mel Gorman
2012-06-20 11:44 ` [PATCH 17/17] mm: Account for the number of times direct reclaimers get throttled Mel Gorman
2012-06-20 11:44 ` Mel Gorman
-- strict thread matches above, loose matches on Subject: below --
2012-06-20 9:35 [PATCH 00/17] Swap-over-NBD without deadlocking V12 Mel Gorman
2012-06-20 9:35 ` [PATCH 01/17] mm: sl[au]b: Add knowledge of PFMEMALLOC reserve pages Mel Gorman
2012-06-20 9:35 ` Mel Gorman
2012-06-20 11:05 ` Sebastian Andrzej Siewior
2012-06-20 11:05 ` Sebastian Andrzej Siewior
2012-06-20 11:44 ` Mel Gorman
2012-06-20 11:44 ` Mel Gorman
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