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Message-ID: <532480950801081319v690dec0fy3538721fc1cd57a7@mail.gmail.com>
Date: Tue, 8 Jan 2008 13:19:00 -0800
From: "Michael Rubin" <mrubin@google.com>
To: "Andrew Morton" <akpm@linux-foundation.org>
Subject: Re: Possible fix for lockup in drop_caches
Cc: richard <richard@rsk.demon.co.uk>, den@openvz.org,
       lkml <linux-kernel@vger.kernel.org>
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	 <20071222020611.9e4e78dd.akpm@linux-foundation.org>
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On Dec 22, 2007 2:06 AM, Andrew Morton <akpm@linux-foundation.org> wrote:
> On Mon, 17 Dec 2007 12:13:22 +0000 richard <richard@rsk.demon.co.uk> wrote:
> Michael, might your convert-inode-lists-to-tree patches eliminate the need
> for taking inode_lock in drop_pagecache_sb()?  Probably not, as it uses an
> rbtree.  It would have been possible if it was using a radix-tree, I
> suspect..

You are correct the new patch based on an rbtree will still require the lock.

mrubin
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