[PATCH 03/43] fbdev/deferred-io: Clean up pageref on lastclose

[Javier Martinez Canillas]

Thomas Zimmermann <tzimmermann at suse.de> writes:

> Clean up the pageref state as part of the lastclose helper. This
> only requirs to clear the page's mapping field. The pageref and

requires

> page can stay in place for the next opened instance of the frame-
> buffer file.
>
> With the change in the clean-up logic, here's no further need

there's

> to lookup pages during the lastclose cleanup. The code instead
> uses the existing pagerefs in its look-up table. It also avoids
> using smem_len, which some driver might not set correctly.
>
> Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de>
> ---

Reviewed-by: Javier Martinez Canillas <javierm at redhat.com>

-- 
Best regards,

Javier Martinez Canillas
Core Platforms
Red Hat