From: Andi Kleen <andi@firstfloor.org>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andi Kleen <andi@firstfloor.org>,
Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, Andrea Arcangeli <aarcange@redhat.com>,
Rik van Riel <riel@redhat.com>,
tim.c.chen@linux.intel.com, lwoodman@redhat.com, mel@csn.ul.ie
Subject: Re: Batch locking for rmap fork/exit processing
Date: Fri, 6 May 2011 19:05:42 +0200 [thread overview]
Message-ID: <20110506170542.GG11636@one.firstfloor.org> (raw)
In-Reply-To: <BANLkTi=kxGkRS-VamLBnZCoHC7TpMsJ90w@mail.gmail.com>
On Fri, May 06, 2011 at 09:44:40AM -0700, Linus Torvalds wrote:
> Hmm. Andrew wasn't cc'd on this series, and usually things like this
> go through the -mm tree
>
> Maybe Andrew saw it by virtue of the linux-mm list, but maybe he
> didn't. So here he is cc'd directly.
>
> The series looks reasonable to me,
Thanks.
To be honest I'm not really happy about it, it's more a short term
bandaid. anon_vma lock and file mapping i_mmap_lock lock are still very hot
in the test, compared to .35. And I didn't find any way to improve
i_mmap_lock.
If someone has better ideas to fix this I would be interested.
Still it's probably a useful short term bandaid.
-Andi
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prev parent reply other threads:[~2011-05-06 17:05 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-05 19:32 Andi Kleen
2011-05-05 19:32 ` [PATCH 1/4] VM/RMAP: Add infrastructure for batching the rmap chain locking Andi Kleen
2011-05-06 15:59 ` Rik van Riel
2011-05-09 21:43 ` Andrew Morton
2011-05-09 22:23 ` Andi Kleen
2011-05-09 22:28 ` Andrew Morton
2011-05-09 23:02 ` Andi Kleen
2011-05-09 23:16 ` Andrew Morton
2011-05-10 0:05 ` Andi Kleen
2011-05-10 1:26 ` Andrew Morton
2011-05-10 1:27 ` Rik van Riel
2011-05-10 1:48 ` Andrew Morton
2011-05-05 19:32 ` [PATCH 2/4] VM/RMAP: Batch anon vma chain root locking in fork Andi Kleen
2011-05-06 15:59 ` Rik van Riel
2011-05-05 19:32 ` [PATCH 3/4] VM/RMAP: Batch anon_vma_unlink in exit Andi Kleen
2011-05-06 16:48 ` Rik van Riel
2011-05-05 19:32 ` [PATCH 4/4] VM/RMAP: Move avc freeing outside the lock Andi Kleen
2011-05-06 16:52 ` Rik van Riel
2011-05-06 16:44 ` Batch locking for rmap fork/exit processing Linus Torvalds
2011-05-06 17:05 ` Andi Kleen [this message]
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