Hi Balbir,
On Tue, Nov 30, 2010 at 7:15 PM, Balbir Singh <balbir@xxxxxxxxxxxxxxxxxx> wrote:
> Refactor zone_reclaim, move reusable functionality outside
> of zone_reclaim. Make zone_reclaim_unmapped_pages modular
>
> Signed-off-by: Balbir Singh <balbir@xxxxxxxxxxxxxxxxxx>
> ---
> mm/vmscan.c | 35 +++++++++++++++++++++++------------
> 1 files changed, 23 insertions(+), 12 deletions(-)
>
> diff --git a/mm/vmscan.c b/mm/vmscan.c
> index 325443a..0ac444f 100644
> --- a/mm/vmscan.c
> +++ b/mm/vmscan.c
> @@ -2719,6 +2719,27 @@ static long zone_pagecache_reclaimable(struct zone *zone)
> }
>
> /*
> + * Helper function to reclaim unmapped pages, we might add something
> + * similar to this for slab cache as well. Currently this function
> + * is shared with __zone_reclaim()
> + */
> +static inline void
> +zone_reclaim_unmapped_pages(struct zone *zone, struct scan_control *sc,
> + unsigned long nr_pages)
> +{
> + int priority;
> + /*
> + * Free memory by calling shrink zone with increasing
> + * priorities until we have enough memory freed.
> + */
> + priority = ZONE_RECLAIM_PRIORITY;
> + do {
> + shrink_zone(priority, zone, sc);
> + priority--;
> + } while (priority >= 0 && sc->nr_reclaimed < nr_pages);
> +}
> +
I don't see any specific logic about naming
"zone_reclaim_unmapped_pages" in your function.
Maybe, caller of this function have to handle sc->may_unmap. So, this
function's naming
is not good.
As I see your logic, the function name would be just "zone_reclaim_pages"
If you want to name it with zone_reclaim_unmapped_pages, it could be
better with setting sc->may_unmap in this function.
--
Kind regards,
Minchan Kim
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