Re: [PATCH] xen/blkfront: speed up purge_persistent_grants()

[Roger Pau Monné]

On Fri, Mar 11, 2022 at 11:35:27AM +0100, Juergen Gross wrote:
> purge_persistent_grants() is scanning the grants list for persistent
> grants being no longer in use by the backend. When having found such a
> grant, it will be set to "invalid" and pushed to the tail of the list.
> 
> Instead of pushing it directly to the end of the list, add it first to
> a temporary list, avoiding to scan those entries again in the main
> list traversal. After having finished the scan, append the temporary
> list to the grant list.
> 
> Suggested-by: Jan Beulich <jbeulich@xxxxxxxx>
> Signed-off-by: Juergen Gross <jgross@xxxxxxxx>

Reviewed-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>

Thanks.