linux-kernel - Re: Yet another borken page_count() check in invalidate_inode

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Message-Id: <1163613913.5691.215.camel@lade.trondhjem.org>
Date:	Wed, 15 Nov 2006 13:05:13 -0500
From:	Trond Myklebust <Trond.Myklebust@...app.com>
To:	Andrew Morton <akpm@...l.org>
Cc:	Charles Edward Lever <chucklever@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: Yet another borken page_count() check in
	invalidate_inode_pages2()....

On Wed, 2006-11-15 at 08:46 -0800, Andrew Morton wrote:

> but nobody could have started another writeback after the "..." because they
> couldn't have got the lock_page(), and lock_page() is required for
> ->writepage()?

Nothing can have called writepage(), but something may be calling
->writepages(). That may call set_page_writeback without taking the page
lock.

Cheers,
  Trond
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