Re: [Xen-devel] [PATCH v3] mm: Don't scrub pages while holding heap lock in alloc_heap_pages()

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 06.09.17 at 17:33, <boris.ostrovsky@xxxxxxxxxx> wrote:
> Instead, preserve PGC_need_scrub bit when setting PGC_state_inuse
> state while still under the lock and clear those pages later.
> 
> Note that we still need to grub the lock when clearing PGC_need_scrub
> bit since count_info might be updated during MCE handling in
> mark_page_offline().
> 
> Signed-off-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>

Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>



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