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Re: [Xen-devel] [PATCH 12/14] xen-blkback: safely unmap grants in case they are still in use

On 01/26/2015 08:02 AM, David Vrabel wrote:
On 19/01/15 15:51, David Vrabel wrote:
From: Jenny Herbert <jennifer.herbert@xxxxxxxxxx>

Use gnttab_unmap_refs_async() to wait until the mapped pages are no
longer in use before unmapping them.

This allows blkback to use network storage which may retain refs to
pages in queued skbs after the block I/O has completed.

Hi Jens,

This xen-blkback change depends on several Xen changes and it would be
easiest if this went via the Xen tree.  Are you ok with this?

Yeah, that's fine. You can add my acked-by.

Jens Axboe

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