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mm: remove lru type checks from __isolate_lru_page()

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After patch "mm: forbid lumpy-reclaim in shrink_active_list()" we can
completely remove anon/file and active/inactive lru type filters from
__isolate_lru_page(), because isolation for 0-order reclaim always
isolates pages from right lru list.  And pages-isolation for lumpy
shrink_inactive_list() or memory-compaction anyway allowed to isolate
pages from all evictable lru lists.

Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Hugh Dickins <hughd@google.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: Glauber Costa <glommer@parallels.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Konstantin Khlebnikov 2012-05-29 15:06:54 -07:00 • committed by Linus Torvalds
commit f3fd4a6192
4 changed files with 10 additions and 29 deletions
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10
include/linux/mmzone.h
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@ -209,16 +209,12 @@ struct lruvec {
#define LRU_ALL_EVICTABLE (LRU_ALL_FILE | LRU_ALL_ANON)
#define LRU_ALL ((1 << NR_LRU_LISTS) - 1)
/* Isolate inactive pages */
#define ISOLATE_INACTIVE ((__force isolate_mode_t)0x1)
/* Isolate active pages */
#define ISOLATE_ACTIVE ((__force isolate_mode_t)0x2)
/* Isolate clean file */
#define ISOLATE_CLEAN ((__force isolate_mode_t)0x4)
#define ISOLATE_CLEAN ((__force isolate_mode_t)0x1)
/* Isolate unmapped file */
#define ISOLATE_UNMAPPED ((__force isolate_mode_t)0x8)
#define ISOLATE_UNMAPPED ((__force isolate_mode_t)0x2)
/* Isolate for asynchronous migration */
#define ISOLATE_ASYNC_MIGRATE ((__force isolate_mode_t)0x10)
#define ISOLATE_ASYNC_MIGRATE ((__force isolate_mode_t)0x4)
/* LRU Isolation modes. */
typedef unsigned __bitwise__ isolate_mode_t;

2
include/linux/swap.h
View file

@ -251,7 +251,7 @@ static inline void lru_cache_add_file(struct page *page)
/* linux/mm/vmscan.c */
extern unsigned long try_to_free_pages(struct zonelist *zonelist, int order,
gfp_t gfp_mask, nodemask_t *mask);
extern int __isolate_lru_page(struct page *page, isolate_mode_t mode, int file);
extern int __isolate_lru_page(struct page *page, isolate_mode_t mode);
extern unsigned long try_to_free_mem_cgroup_pages(struct mem_cgroup *mem,
gfp_t gfp_mask, bool noswap);
extern unsigned long mem_cgroup_shrink_node_zone(struct mem_cgroup *mem,