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Re: [Xen-devel] [PATCH 10/14] xen/gntdev: convert priv->lock to a mutex

To: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
From: David Vrabel <david.vrabel@xxxxxxxxxx>
Date: Mon, 19 Jan 2015 17:53:22 +0000
Cc: xen-devel@xxxxxxxxxxxxxxxxxxxx, Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
Delivery-date: Mon, 19 Jan 2015 18:02:04 +0000
List-id: Xen developer discussion <xen-devel.lists.xen.org>

On 19/01/15 17:49, Stefano Stabellini wrote:
> On Mon, 19 Jan 2015, David Vrabel wrote:
>> Unmapping may require sleeping and we unmap while holding priv->lock, so
>> convert it to a mutex.
> 
> It would be useful to list in the commit message the operations that
> might sleep and are currently called with the spinlock held.

It's the next patch that introduces the sleeping, when we wait on the
completion for the async grant unmap to complete.

David


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Follow-Ups:
- Re: [Xen-devel] [PATCH 10/14] xen/gntdev: convert priv->lock to a mutex
  - From: Stefano Stabellini

References:
- [Xen-devel] [PATCHv3 00/14] xen: fix many long-standing grant mapping bugs
  - From: David Vrabel
- [Xen-devel] [PATCH 10/14] xen/gntdev: convert priv->lock to a mutex
  - From: David Vrabel
- Re: [Xen-devel] [PATCH 10/14] xen/gntdev: convert priv->lock to a mutex
  - From: Stefano Stabellini

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