linux-kernel - Re: [PATCH 0/10] Fix page_mkwrite() for blocksize

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Message-ID: <20090616144217.GA18063@duck.suse.cz>
Date:	Tue, 16 Jun 2009 16:42:17 +0200
From:	Jan Kara <jack@...e.cz>
To:	Christoph Hellwig <hch@...radead.org>
Cc:	LKML <linux-kernel@...r.kernel.org>, linux-mm@...ck.org,
	linux-fsdevel@...r.kernel.org, npiggin@...e.de
Subject: Re: [PATCH 0/10] Fix page_mkwrite() for blocksize < pagesize
	(version 3)

On Tue 16-06-09 10:34:24, Christoph Hellwig wrote:
> On Mon, Jun 15, 2009 at 07:59:47PM +0200, Jan Kara wrote:
> > 
> > patches below are an attempt to solve problems filesystems have with
> > page_mkwrite() when blocksize < pagesize (see the changelog of the second patch
> > for details).
> 
> It would be useful if you had a test case reproducing these issues,
> so that I can verify how well your patches work in various scenarios.
  Good point, I should have mentioned in the changelog: fsx-linux is able
to trigger the problem quite quickly.
  I have also written a simple program for initial testing of the fix
(works only for 1K blocksize and 4K pagesize) - it's attached.

									Honza
-- 
Jan Kara <jack@...e.cz>
SUSE Labs, CR

View attachment "test-mkwrite.c" of type "text/x-c++src" (1243 bytes)