From: Nick Piggin <npiggin@suse.de>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-mm@kvack.org
Subject: Re: [patch] mm: document tree_lock->zone.lock lockorder
Date: Sat, 29 Sep 2007 15:22:10 +0200 [thread overview]
Message-ID: <20070929132210.GF14159@wotan.suse.de> (raw)
In-Reply-To: <20070928162039.9311c1e3.akpm@linux-foundation.org>
On Fri, Sep 28, 2007 at 04:20:39PM -0700, Andrew Morton wrote:
> On Fri, 28 Sep 2007 17:55:36 +0200
> Nick Piggin <npiggin@suse.de> wrote:
>
> > If you won't take the patch to move allocation out from under tree_lock,
>
> rofl@nick. My memory of patches only extends back for the previous
> 10000 or so. You'll need to put a tad more effort into telling us
> what you're referring to, sorry.
Just the patch to default the radix tree node allocation to use the
preload (which will be guaranteed to be full) before falling back to
doing atomic allocations under the tree_lock.
At the moment, it defaults to doing these atomic allocations first,
and leaves the preload alone, even though we've just done all the work
to allocate it under GFP_KERNEL.
Anyway.
> > please apply this update to lock ordering comments.
>
> no probs, thanks.
Thanks.
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prev parent reply other threads:[~2007-09-29 13:22 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-28 15:55 [patch] mm: document tree_lock->zone.lock lockorder Nick Piggin
2007-09-28 23:20 ` Andrew Morton
2007-09-29 13:22 ` Nick Piggin [this message]
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