Re: [PATCH 2/2] brd: Fix brd_direct_access with partitions

From: Boaz Harrosh
Date: Wed Jul 30 2014 - 11:37:53 EST

On 07/30/2014 06:34 PM, Matthew Wilcox wrote:
> On Wed, Jul 30, 2014 at 05:18:47PM +0300, Boaz Harrosh wrote:
>> When brd_direct_access() is called on a partition-bdev
>> it would access the wrong sector. And caller would then
>> corrupt the device's data.
>> This is a preliminary fix, Matthew Wilcox has a patch
>> in his DAX patchset which will define a global wrapper
>> to bdev->bd_disk->fops->direct_access that will do the
>> proper checks and translations before calling a driver
>> global member. (The way it is done at the rest of the
>> block stack)
> Uh, no, let's just focus on getting the DAX code in instead of putting
> in interim patches that will conflict. Patch 4/22 is uncontroversial,
> fixes this problem, has no dependencies, and is key to the rest of the DAX
> patchset. If this problem wants to be fixed, then put 4/22 in instead.

OK, I agree, could you please push 4/22 as reply to here for
Jens to take for 3.17 ? (together with my 1/2)


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