[dm-devel] Re: [Evms-devel] dm snapshot problem

[Andrew Morton <akpm osdl org>]

Kevin Corry <kevcorry us ibm com> wrote:
>
> Now that you mention it, the memory pages to hold the copied data is allocated 
>  at the time the snapshot device is activated, and uses 
>  alloc_page(GFP_KERNEL). Should we switch this to alloc_page(GFP_HIGHUSER)?

Sure, if possible.  You'll need to map them in with kmap_atomic() when
actually altering their contents, of course.