On Fri, Feb 10, 2012 at 11:32 AM, Marek Szyprowski <m.szyprowski@xxxxxxxxxxx> wrote:@@ -5637,6 +5642,56 @@ static int __alloc_contig_migrate_range(unsigned long start, unsigned long end) return ret > 0 ? 0 : ret; } +/* + * Update zone's cma pages counter used for watermark level calculation. + */ +static inline void __update_cma_wmark_pages(struct zone *zone, int count) +{ + unsigned long flags; + spin_lock_irqsave(&zone->lock, flags); + zone->min_cma_pages += count; + spin_unlock_irqrestore(&zone->lock, flags); + setup_per_zone_wmarks(); +} + +/* + * Trigger memory pressure bump to reclaim some pages in order to be able to + * allocate 'count' pages in single page units. Does similar work as + *__alloc_pages_slowpath() function. + */ +static int __reclaim_pages(struct zone *zone, gfp_t gfp_mask, int count) +{ + enum zone_type high_zoneidx = gfp_zone(gfp_mask); + struct zonelist *zonelist = node_zonelist(0, gfp_mask); + int did_some_progress = 0; + int order = 1; + unsigned long watermark; + + /* + * Increase level of watermarks to force kswapd do his job + * to stabilise at new watermark level. + */ + __modify_min_cma_pages(zone, count);
On Mon, 13 Feb 2012 10:57:58 -0800, Robert Nelson <robertcnelson@xxxxxxxxx> wrote:
Hi Marek, This ^^^ function doesn't seem to exist in this patchset, is it in another set posted to lkml?
This should read __update_cma_wmark_pages(). Sorry for the incorrect patch. -- Best regards, _ _ .o. | Liege of Serenely Enlightened Majesty of o' \,=./ `o ..o | Computer Science, Michał “mina86” Nazarewicz (o o) ooo +----<email/xmpp: mpn@xxxxxxxxxx>--------------ooO--(_)--Ooo-- -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href