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From: David Howells <dhowells@redhat.com>
In-Reply-To: <Pine.LNX.4.64.0701291521540.24726@blonde.wat.veritas.com> 
References: <Pine.LNX.4.64.0701291521540.24726@blonde.wat.veritas.com>  <45BDCA8A.4050809@yahoo.com.au> 
To: Hugh Dickins <hugh@veritas.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>,
       linux-kernel <linux-kernel@vger.kernel.org>,
       Linux Memory Management <linux-mm@kvack.org>,
       David Howells <dhowells@redhat.com>, Andrew Morton <akpm@osdl.org>
Subject: Re: page_mkwrite caller is racy? 
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Date: Thu, 01 Feb 2007 11:44:59 +0000
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Hugh Dickins <hugh@veritas.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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