On (20/10/12 00:14), Minchan Kim wrote:
>
> With the command, zram writeback idle pages from memory to the storage.
>
> +If admin want to write a specific page in zram device to backing device,
> +they could write the page index into the interface.
> +
> + echo 1251 > /sys/block/zramX/writeback
> +
May be we can make it more explicit?
echo "page_index=123" > /sys/block/zramX/writeback
Just in case of future extensions. E.g. someone might want to
have something like
echo "idle_nr=123" > /sys/block/zramX/writeback
which would write_back 123 idle pages max.
-ss
