Messages in this thread | | | Date | Sun, 5 Feb 2006 16:57:46 +0800 | From | Coywolf Qi Hunt <> | Subject | Re: [PATCH 2/4] Split the free lists into kernel and user parts |
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2006/1/20, Mel Gorman <mel@csn.ul.ie>: > > This patch adds the core of the anti-fragmentation strategy. It works by > grouping related allocation types together. The idea is that large groups of > pages that may be reclaimed are placed near each other. The zone->free_area > list is broken into RCLM_TYPES number of lists. > > Signed-off-by: Mel Gorman <mel@csn.ul.ie> > Signed-off-by: Joel Schopp <jschopp@austin.ibm.com> > diff -rup -X /usr/src/patchset-0.5/bin//dontdiff linux-2.6.16-rc1-mm1-001_antifrag_flags/include/linux/mmzone.h linux-2.6.16-rc1-mm1-002_fragcore/include/linux/mmzone.h > --- linux-2.6.16-rc1-mm1-001_antifrag_flags/include/linux/mmzone.h 2006-01-19 11:21:59.000000000 +0000 > +++ linux-2.6.16-rc1-mm1-002_fragcore/include/linux/mmzone.h 2006-01-19 21:51:05.000000000 +0000 > @@ -22,8 +22,16 @@ > #define MAX_ORDER CONFIG_FORCE_MAX_ZONEORDER > #endif > > +#define RCLM_NORCLM 0
better be RCLM_NORMAL
> +#define RCLM_EASY 1 > +#define RCLM_TYPES 2 > + > +#define for_each_rclmtype_order(type, order) \ > + for (order = 0; order < MAX_ORDER; order++) \ > + for (type = 0; type < RCLM_TYPES; type++) > + > struct free_area { > - struct list_head free_list; > + struct list_head free_list[RCLM_TYPES]; > unsigned long nr_free; > }; >
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