linux-kernel - Re: [PATCH] clear PageError bit in msync & fsync

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Date:	Thu, 11 Nov 2010 11:31:27 -0500
From:	Rik van Riel <riel@...hat.com>
To:	"Ted Ts'o" <tytso@....edu>, Jeff Layton <jlayton@...hat.com>,
	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	esandeen@...hat.com, jmoyer@...hat.com,
	linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH] clear PageError bit in msync & fsync

On 11/09/2010 04:07 PM, Ted Ts'o wrote:

> Do we guarantee that the application will get EIO at least once?  I
> thought there were issues where the error bit could get lost if the
> page writeback was triggered by sync() run by a third-party
> application.

Andrew, both the current kernel before and after my patch does
not guarantee the behaviour Ted has pointed out is required.

Johannes came up with a way to guarantee that - I'll send in
a patch for that today.  That patch will obsolete the patch
I sent before (I don't think you've applied it yet).

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