From: Andrew Morton <akpm@linux-foundation.org>
To: Nick Piggin <npiggin@suse.de>
Cc: linux-mm@kvack.org, hugh@veritas.com
Subject: Re: [patch] mm: page allocator minor speedup
Date: Mon, 18 Aug 2008 16:29:34 -0700 [thread overview]
Message-ID: <20080818162934.aba8793e.akpm@linux-foundation.org> (raw)
In-Reply-To: <20080818122957.GE9062@wotan.suse.de>
On Mon, 18 Aug 2008 14:29:57 +0200
Nick Piggin <npiggin@suse.de> wrote:
> Now that we don't put a ZERO_PAGE in the pagetables any more, and the
> "remove PageReserved from core mm" patch has had a long time to mature,
> let's remove the page reserved logic from the allocator.
>
> This saves several branches and about 100 bytes in some important paths.
This of course made a big mess against the page reclaim rewrite. I
think I fixed it up.
I could have merged it ahead, but then that would have made a big mess
of the page reclaim rewrite.
Testing and reviewing the page reclaim rewrite would be a useful
place to spend time..
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next prev parent reply other threads:[~2008-08-18 23:29 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-18 12:24 [patch] mm: pagecache insertion fewer atomics Nick Piggin
2008-08-18 12:25 ` [patch] mm: unlockless reclaim Nick Piggin
2008-08-19 5:09 ` KOSAKI Motohiro
2008-08-19 10:05 ` Nick Piggin
2008-08-19 10:20 ` KOSAKI Motohiro
2008-08-18 12:28 ` [patch] mm: page lock use lock bitops Nick Piggin
2008-08-18 12:29 ` [patch] fs: buffer " Nick Piggin
2008-08-18 12:29 ` [patch] mm: page allocator minor speedup Nick Piggin
2008-08-18 13:57 ` Pekka Enberg
2008-08-19 7:49 ` Nick Piggin
2008-08-19 7:51 ` Pekka Enberg
2008-08-19 10:25 ` Nick Piggin
2008-08-18 23:29 ` Andrew Morton [this message]
2008-08-19 7:51 ` Nick Piggin
2008-10-14 15:52 ` Hugh Dickins
2008-10-15 4:37 ` Nick Piggin
2008-08-19 5:41 ` [patch] mm: pagecache insertion fewer atomics KOSAKI Motohiro
2008-08-19 5:50 ` Andrew Morton
2008-08-19 10:07 ` Nick Piggin
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