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Re: [Xen-devel] [PATCH 4/4] mm: Don't hold heap lock in alloc_heap_pages() longer than necessary

To: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
From: Wei Liu <wei.liu2@xxxxxxxxxx>
Date: Tue, 29 Aug 2017 13:16:53 +0100
Cc: tim@xxxxxxx, sstabellini@xxxxxxxxxx, wei.liu2@xxxxxxxxxx, George.Dunlap@xxxxxxxxxxxxx, andrew.cooper3@xxxxxxxxxx, ian.jackson@xxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxx, jbeulich@xxxxxxxx
Delivery-date: Tue, 29 Aug 2017 12:17:46 +0000
List-id: Xen developer discussion <xen-devel.lists.xen.org>

On Mon, Aug 28, 2017 at 04:40:29PM -0400, Boris Ostrovsky wrote:
> Once pages are removed from the heap we don't need to hold the heap
> lock. It is especially useful to drop it for an unscrubbed buddy since
> we will be scrubbing it.
> 
> Signed-off-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>

Reviewed-by: Wei Liu <wei.liu2@xxxxxxxxxx>

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References:
- [Xen-devel] [PATCH 0/4] Scrubbing updates
  - From: Boris Ostrovsky
- [Xen-devel] [PATCH 4/4] mm: Don't hold heap lock in alloc_heap_pages() longer than necessary
  - From: Boris Ostrovsky

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