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Message-ID: <5129.1170330299@redhat.com>
Date:	Thu, 01 Feb 2007 11:44:59 +0000
From:	David Howells <dhowells@...hat.com>
To:	Hugh Dickins <hugh@...itas.com>
Cc:	Nick Piggin <nickpiggin@...oo.com.au>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Linux Memory Management <linux-mm@...ck.org>,
	David Howells <dhowells@...hat.com>,
	Andrew Morton <akpm@...l.org>
Subject: Re: page_mkwrite caller is racy? 

Hugh Dickins <hugh@...itas.com> wrote:

> > Must it be able to sleep?
> 
> Not as David was using it

It absolutely *must* be able to sleep.  It has to wait for FS-Cache to finish
writing the page to the cache before letting the PTE be made writable.

David
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