From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Sandeen <sandeen@redhat.com>
Subject: Re: 2.6.21-ext4-1
Date: Wed, 09 May 2007 09:52:10 -0500
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Cc: David Chinner <dgc@sgi.com>, Mingming Cao <cmm@us.ibm.com>,
	"Theodore Ts'o" <tytso@mit.edu>, linux-ext4@vger.kernel.org,
	Johann Lombardi <johann.lombardi@bull.net>,
	linux-kernel@vger.kernel.org
To: "Amit K. Arora" <aarora@linux.vnet.ibm.com>
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Amit K. Arora wrote:

> And, how does XFS behave now if we write to mmapped preallocated blocks,
> since XFS also doesn't have ->page_mkwrite() implemented as of date ?

unwritten extents remain unwritten after mmap() modifies them

http://oss.sgi.com/bugzilla/show_bug.cgi?id=418

:)

-Eric