linux-ext4 - Re: [PATCH V2] fix type of "offset" in ext4_io

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Message-ID: <20100130173458.GB788@thunk.org>
Date:	Sat, 30 Jan 2010 12:34:58 -0500
From:	tytso@....edu
To:	Eric Sandeen <sandeen@...hat.com>
Cc:	ext4 development <linux-ext4@...r.kernel.org>,
	Giel de Nijs <giel@...torwise.com>
Subject: Re: [PATCH V2] fix type of "offset" in ext4_io_end

On Fri, Jan 29, 2010 at 02:28:23PM -0600, Eric Sandeen wrote:
> The "offset" member in ext4_io_end holds bytes, not
> blocks, so ext4_lblk_t is wrong - and too small (u32)
> 
> This caused the testcase "Possible ext4 data corruption
> with large files and async I/O" sent by Giel to fail when it
> wrapped around to 0.
> 
> Also fix up the type of arguments to
> ext4_convert_unwritten_extents(), it gets ssize_t from
> ext4_end_aio_dio_nolock() and ext4_ext_direct_IO()
> 
> Reported-by: Giel de Nijs <giel@...torwise.com>
> Signed-off-by: Eric Sandeen <sandeen@...hat.com>
> ---

This looks important enough (and low risk enough) to push to Linus
before the next merge window.   Comments?

						- Ted
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