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From: Ingo Molnar <mingo@kernel.org>
To: Rik van Riel <riel@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	linux-mm <linux-mm@kvack.org>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	Paul Turner <pjt@google.com>,
	Lee Schermerhorn <Lee.Schermerhorn@hp.com>,
	Christoph Lameter <cl@linux.com>, Mel Gorman <mgorman@suse.de>,
	Andrew Morton <akpm@linux-foundation.org>,
	Andrea Arcangeli <aarcange@redhat.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Johannes Weiner <hannes@cmpxchg.org>,
	Hugh Dickins <hughd@google.com>
Subject: Re: [PATCH 1/2] mm/rmap: Convert the struct anon_vma::mutex to an rwsem
Date: Sun, 2 Dec 2012 16:10:48 +0100	[thread overview]
Message-ID: <20121202151048.GA12911@gmail.com> (raw)
In-Reply-To: <50BA6649.7050103@redhat.com>


* Rik van Riel <riel@redhat.com> wrote:

> On 12/01/2012 03:10 PM, Ingo Molnar wrote:
> >
> >Convert the struct anon_vma::mutex to an rwsem, which will help
> >in solving a page-migration scalability problem. (Addressed in
> >a separate patch.)
> >
> >The conversion is simple and straightforward: in every case
> >where we mutex_lock()ed we'll now down_write().
> >
> >Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
> >Cc: Andrew Morton <akpm@linux-foundation.org>
> >Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
> >Cc: Andrea Arcangeli <aarcange@redhat.com>
> >Cc: Rik van Riel <riel@redhat.com>
> >Cc: Mel Gorman <mgorman@suse.de>
> >Cc: Hugh Dickins <hughd@google.com>
> >Signed-off-by: Ingo Molnar <mingo@kernel.org>
> 
> Reviewed-by: Rik van Riel <riel@redhat.com>

Thanks Rik!

	Ingo

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WARNING: multiple messages have this Message-ID (diff)
From: Ingo Molnar <mingo@kernel.org>
To: Rik van Riel <riel@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	linux-mm <linux-mm@kvack.org>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	Paul Turner <pjt@google.com>,
	Lee Schermerhorn <Lee.Schermerhorn@hp.com>,
	Christoph Lameter <cl@linux.com>, Mel Gorman <mgorman@suse.de>,
	Andrew Morton <akpm@linux-foundation.org>,
	Andrea Arcangeli <aarcange@redhat.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Johannes Weiner <hannes@cmpxchg.org>,
	Hugh Dickins <hughd@google.com>
Subject: Re: [PATCH 1/2] mm/rmap: Convert the struct anon_vma::mutex to an rwsem
Date: Sun, 2 Dec 2012 16:10:48 +0100	[thread overview]
Message-ID: <20121202151048.GA12911@gmail.com> (raw)
In-Reply-To: <50BA6649.7050103@redhat.com>


* Rik van Riel <riel@redhat.com> wrote:

> On 12/01/2012 03:10 PM, Ingo Molnar wrote:
> >
> >Convert the struct anon_vma::mutex to an rwsem, which will help
> >in solving a page-migration scalability problem. (Addressed in
> >a separate patch.)
> >
> >The conversion is simple and straightforward: in every case
> >where we mutex_lock()ed we'll now down_write().
> >
> >Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
> >Cc: Andrew Morton <akpm@linux-foundation.org>
> >Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
> >Cc: Andrea Arcangeli <aarcange@redhat.com>
> >Cc: Rik van Riel <riel@redhat.com>
> >Cc: Mel Gorman <mgorman@suse.de>
> >Cc: Hugh Dickins <hughd@google.com>
> >Signed-off-by: Ingo Molnar <mingo@kernel.org>
> 
> Reviewed-by: Rik van Riel <riel@redhat.com>

Thanks Rik!

	Ingo

  reply	other threads:[~2012-12-02 15:10 UTC|newest]

Thread overview: 78+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-11-30 19:58 [PATCH 00/10] Latest numa/core release, v18 Ingo Molnar
2012-11-30 19:58 ` Ingo Molnar
2012-11-30 19:58 ` [PATCH 01/10] sched: Add "task flipping" support Ingo Molnar
2012-11-30 19:58   ` Ingo Molnar
2012-11-30 19:58 ` [PATCH 02/10] sched: Move the NUMA placement logic to a worklet Ingo Molnar
2012-11-30 19:58   ` Ingo Molnar
2012-11-30 19:58 ` [PATCH 03/10] numa, mempolicy: Improve CONFIG_NUMA_BALANCING=y OOM behavior Ingo Molnar
2012-11-30 19:58   ` Ingo Molnar
2012-11-30 19:58 ` [PATCH 04/10] mm, numa: Turn 4K pte NUMA faults into effective hugepage ones Ingo Molnar
2012-11-30 19:58   ` Ingo Molnar
2012-11-30 19:58 ` [PATCH 05/10] sched: Introduce directed NUMA convergence Ingo Molnar
2012-11-30 19:58   ` Ingo Molnar
2012-11-30 19:58 ` [PATCH 06/10] sched: Remove statistical NUMA scheduling Ingo Molnar
2012-11-30 19:58   ` Ingo Molnar
2012-11-30 19:58 ` [PATCH 07/10] sched: Track quality and strength of convergence Ingo Molnar
2012-11-30 19:58   ` Ingo Molnar
2012-11-30 19:58 ` [PATCH 08/10] sched: Converge NUMA migrations Ingo Molnar
2012-11-30 19:58   ` Ingo Molnar
2012-11-30 19:58 ` [PATCH 09/10] sched: Add convergence strength based adaptive NUMA page fault rate Ingo Molnar
2012-11-30 19:58   ` Ingo Molnar
2012-11-30 19:58 ` [PATCH 10/10] sched: Refine the 'shared tasks' memory interleaving logic Ingo Molnar
2012-11-30 19:58   ` Ingo Molnar
2012-11-30 20:37 ` [PATCH 00/10] Latest numa/core release, v18 Linus Torvalds
2012-11-30 20:37   ` Linus Torvalds
2012-12-01  9:49   ` [RFC PATCH] mm/migration: Don't lock anon vmas in rmap_walk_anon() Ingo Molnar
2012-12-01  9:49     ` Ingo Molnar
2012-12-01 12:26     ` [RFC PATCH] mm/migration: Remove anon vma locking from try_to_unmap() use Ingo Molnar
2012-12-01 12:26       ` Ingo Molnar
2012-12-01 18:38       ` Linus Torvalds
2012-12-01 18:38         ` Linus Torvalds
2012-12-01 18:41         ` Ingo Molnar
2012-12-01 18:41           ` Ingo Molnar
2012-12-01 18:50           ` Linus Torvalds
2012-12-01 18:50             ` Linus Torvalds
2012-12-01 20:10             ` [PATCH 1/2] mm/rmap: Convert the struct anon_vma::mutex to an rwsem Ingo Molnar
2012-12-01 20:10               ` Ingo Molnar
2012-12-01 20:19               ` Rik van Riel
2012-12-01 20:19                 ` Rik van Riel
2012-12-02 15:10                 ` Ingo Molnar [this message]
2012-12-02 15:10                   ` Ingo Molnar
2012-12-03 13:59               ` Mel Gorman
2012-12-03 13:59                 ` Mel Gorman
2012-12-01 20:15             ` [PATCH 2/2] mm/migration: Make rmap_walk_anon() and try_to_unmap_anon() more scalable Ingo Molnar
2012-12-01 20:15               ` Ingo Molnar
2012-12-01 20:33               ` Rik van Riel
2012-12-01 20:33                 ` Rik van Riel
2012-12-02 15:12                 ` [PATCH 2/2, v2] " Ingo Molnar
2012-12-02 15:12                   ` Ingo Molnar
2012-12-02 17:53                   ` Rik van Riel
2012-12-02 17:53                     ` Rik van Riel
2012-12-04 14:42                   ` Michel Lespinasse
2012-12-04 14:42                     ` Michel Lespinasse
2012-12-05  2:59                   ` Michel Lespinasse
2012-12-05  2:59                     ` Michel Lespinasse
2012-12-03 14:17               ` [PATCH 2/2] " Mel Gorman
2012-12-03 14:17                 ` Mel Gorman
2012-12-04 14:37                 ` Michel Lespinasse
2012-12-04 14:37                   ` Michel Lespinasse
2012-12-04 18:17                   ` Mel Gorman
2012-12-04 18:17                     ` Mel Gorman
2012-12-01 18:55         ` [RFC PATCH] mm/migration: Remove anon vma locking from try_to_unmap() use Rik van Riel
2012-12-01 18:55           ` Rik van Riel
2012-12-01 16:19     ` [RFC PATCH] mm/migration: Don't lock anon vmas in rmap_walk_anon() Rik van Riel
2012-12-01 16:19       ` Rik van Riel
2012-12-01 17:55     ` Linus Torvalds
2012-12-01 17:55       ` Linus Torvalds
2012-12-01 18:30       ` Ingo Molnar
2012-12-01 18:30         ` Ingo Molnar
2012-12-03 13:41   ` [PATCH 00/10] Latest numa/core release, v18 Mel Gorman
2012-12-03 13:41     ` Mel Gorman
2012-12-04 17:30     ` Thomas Gleixner
2012-12-04 17:30       ` Thomas Gleixner
2012-12-03 10:43 ` Mel Gorman
2012-12-03 10:43   ` Mel Gorman
2012-12-03 11:32 ` Mel Gorman
2012-12-03 11:32   ` Mel Gorman
2012-12-04 22:49 ` Mel Gorman
2012-12-04 22:49   ` Mel Gorman

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