[PATCH 042/270] pnfsblock: fix non-aligned DIO read

[Ben Hutchings]

On Mon, 2012-11-26 at 14:55 -0200, Herton Ronaldo Krzesinski wrote:
> 3.5.7u1 -stable review patch.  If anyone has any objections, please let me know.
> 
> ------------------
> 
> From: Peng Tao <bergwolf at gmail.com>
> 
> commit f742dc4a32587bff50b13dde9d8894b96851951a upstream.
> 
> For DIO read, if it is not sector aligned, we should reject it
> and resend via MDS. Otherwise there might be data corruption.
> Also teach bl_read_pagelist to handle partial page reads for DIO.
> 
> Signed-off-by: Peng Tao <tao.peng at emc.com>
> Signed-off-by: Trond Myklebust <Trond.Myklebust at netapp.com>
> Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski at canonical.com>
[...]

This also hasn't been applied to 3.4, and presumably needs backporting.

Ben.

-- 
Ben Hutchings
Never attribute to conspiracy what can adequately be explained by stupidity.
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