Re: [Xen-devel] [PATCH 10/11] gnttab: limit mapkind()'s iteration count

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 21/06/17 10:38, Jan Beulich wrote:
> There's no need for the function to observe increases of the maptrack
> table (which can occur as the maptrack lock isn't being held) - actual
> population of maptrack entries is excluded while we're here (by way of
> holding the respective grant table lock for writing, while code
> populating entries acquires it for reading). Latch the limit ahead of
> the loop, allowing for the barrier to move out, too.
>
> Signed-by: Jan Beulich <jbeulich@xxxxxxxx>

Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

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