From: Christoph Lameter *_pages is a better description of the role of the variable. Signed-off-by: Christoph Lameter Signed-off-by: Andrew Morton --- include/linux/mmzone.h | 2 +- mm/page_alloc.c | 4 ++-- mm/vmscan.c | 2 +- 3 files changed, 4 insertions(+), 4 deletions(-) diff -puN include/linux/mmzone.h~replace-min_unmapped_ratio-by-min_unmapped_pages-in-struct-zone include/linux/mmzone.h --- a/include/linux/mmzone.h~replace-min_unmapped_ratio-by-min_unmapped_pages-in-struct-zone +++ a/include/linux/mmzone.h @@ -169,7 +169,7 @@ struct zone { /* * zone reclaim becomes active if more unmapped pages exist. */ - unsigned long min_unmapped_ratio; + unsigned long min_unmapped_pages; struct per_cpu_pageset *pageset[NR_CPUS]; #else struct per_cpu_pageset pageset[NR_CPUS]; diff -puN mm/page_alloc.c~replace-min_unmapped_ratio-by-min_unmapped_pages-in-struct-zone mm/page_alloc.c --- a/mm/page_alloc.c~replace-min_unmapped_ratio-by-min_unmapped_pages-in-struct-zone +++ a/mm/page_alloc.c @@ -2398,7 +2398,7 @@ static void __meminit free_area_init_cor zone->spanned_pages = size; zone->present_pages = realsize; #ifdef CONFIG_NUMA - zone->min_unmapped_ratio = (realsize*sysctl_min_unmapped_ratio) + zone->min_unmapped_pages = (realsize*sysctl_min_unmapped_ratio) / 100; #endif zone->name = zone_names[j]; @@ -2956,7 +2956,7 @@ int sysctl_min_unmapped_ratio_sysctl_han return rc; for_each_zone(zone) - zone->min_unmapped_ratio = (zone->present_pages * + zone->min_unmapped_pages = (zone->present_pages * sysctl_min_unmapped_ratio) / 100; return 0; } diff -puN mm/vmscan.c~replace-min_unmapped_ratio-by-min_unmapped_pages-in-struct-zone mm/vmscan.c --- a/mm/vmscan.c~replace-min_unmapped_ratio-by-min_unmapped_pages-in-struct-zone +++ a/mm/vmscan.c @@ -1618,7 +1618,7 @@ int zone_reclaim(struct zone *zone, gfp_ * unmapped file backed pages. */ if (zone_page_state(zone, NR_FILE_PAGES) - - zone_page_state(zone, NR_FILE_MAPPED) <= zone->min_unmapped_ratio) + zone_page_state(zone, NR_FILE_MAPPED) <= zone->min_unmapped_pages) return 0; /* _