Re: [PATCH v3 1/4] pagemap: check permissions and capabilities at open time

[Naoya Horiguchi]

On Tue, Jun 09, 2015 at 11:00:15PM +0300, Konstantin Khlebnikov wrote:
> From: Konstantin Khlebnikov <khlebnikov@xxxxxxxxxxxxxx>
> 
> This patch moves permission checks from pagemap_read() into pagemap_open().
> 
> Pointer to mm is saved in file->private_data. This reference pins only
> mm_struct itself. /proc/*/mem, maps, smaps already work in the same way.
> 
> Signed-off-by: Konstantin Khlebnikov <khlebnikov@xxxxxxxxxxxxxx>
> Link: http://lkml.kernel.org/r/CA+55aFyKpWrt_Ajzh1rzp_GcwZ4=6Y=kOv8hBz172CFJp6L8Tg@xxxxxxxxxxxxxx
                                                           
Reviewed-by: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>   --
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