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mm/vmscan: kill struct mem_cgroup_zone

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Kill struct mem_cgroup_zone and rename shrink_mem_cgroup_zone() to
shrink_lruvec(), it always shrinks one lruvec which it takes as an
argument.

Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Hugh Dickins <hughd@google.com>
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 15:07:02 -07:00 committed by Linus Torvalds
parent 90bdcfafdc
commit f9be23d6da
1 changed files with 6 additions and 20 deletions
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26
mm/vmscan.c
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@ -94,11 +94,6 @@ struct scan_control {
nodemask_t *nodemask;
};
struct mem_cgroup_zone {
struct mem_cgroup *mem_cgroup;
struct zone *zone;
};
#define lru_to_page(_head) (list_entry((_head)->prev, struct page, lru))
#ifdef ARCH_HAS_PREFETCH
@ -1769,8 +1764,7 @@ static inline bool should_continue_reclaim(struct lruvec *lruvec,
/*
* This is a basic per-zone page freer. Used by both kswapd and direct reclaim.
*/
static void shrink_mem_cgroup_zone(struct mem_cgroup_zone *mz,
struct scan_control *sc)
static void shrink_lruvec(struct lruvec *lruvec, struct scan_control *sc)
{
unsigned long nr[NR_LRU_LISTS];
unsigned long nr_to_scan;
@ -1778,9 +1772,6 @@ static void shrink_mem_cgroup_zone(struct mem_cgroup_zone *mz,
unsigned long nr_reclaimed, nr_scanned;
unsigned long nr_to_reclaim = sc->nr_to_reclaim;
struct blk_plug plug;
struct lruvec *lruvec;
lruvec = mem_cgroup_zone_lruvec(mz->zone, mz->mem_cgroup);
restart:
nr_reclaimed = 0;
@ -1842,12 +1833,10 @@ static void shrink_zone(struct zone *zone, struct scan_control *sc)
memcg = mem_cgroup_iter(root, NULL, &reclaim);
do {
struct mem_cgroup_zone mz = {
.mem_cgroup = memcg,
.zone = zone,
};
struct lruvec *lruvec = mem_cgroup_zone_lruvec(zone, memcg);
shrink_lruvec(lruvec, sc);
shrink_mem_cgroup_zone(&mz, sc);
/*
* Limit reclaim has historically picked one memcg and
* scanned it with decreasing priority levels until
@ -2172,10 +2161,7 @@ unsigned long mem_cgroup_shrink_node_zone(struct mem_cgroup *memcg,
.priority = 0,
.target_mem_cgroup = memcg,
};
struct mem_cgroup_zone mz = {
.mem_cgroup = memcg,
.zone = zone,
};
struct lruvec *lruvec = mem_cgroup_zone_lruvec(zone, memcg);
sc.gfp_mask = (gfp_mask & GFP_RECLAIM_MASK) |
(GFP_HIGHUSER_MOVABLE & ~GFP_RECLAIM_MASK);
@ -2191,7 +2177,7 @@ unsigned long mem_cgroup_shrink_node_zone(struct mem_cgroup *memcg,
* will pick up pages from other mem cgroup's as well. We hack
* the priority and make it zero.
*/
shrink_mem_cgroup_zone(&mz, &sc);
shrink_lruvec(lruvec, &sc);
trace_mm_vmscan_memcg_softlimit_reclaim_end(sc.nr_reclaimed);