linux-kernel - Re: Possible fix for lockup in drop

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Date:	Tue, 8 Jan 2008 13:19:00 -0800
From:	"Michael Rubin" <mrubin@...gle.com>
To:	"Andrew Morton" <akpm@...ux-foundation.org>
Cc:	richard <richard@....demon.co.uk>, den@...nvz.org,
	lkml <linux-kernel@...r.kernel.org>
Subject: Re: Possible fix for lockup in drop_caches

On Dec 22, 2007 2:06 AM, Andrew Morton <akpm@...ux-foundation.org> wrote:
> On Mon, 17 Dec 2007 12:13:22 +0000 richard <richard@....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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