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thp: fix anon memory statistics with transparent hugepages

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Count each transparent hugepage as HPAGE_PMD_NR pages in the LRU
statistics, so the Active(anon) and Inactive(anon) statistics in
/proc/meminfo are correct.

Signed-off-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Rik van Riel
2011-01-13 15:47:13 -08:00
committed by Linus Torvalds
parent 97562cd243
commit 2c888cfbc1
5 changed files with 30 additions and 9 deletions
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8
include/linux/mm_inline.h
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@@ -1,6 +1,8 @@
#ifndef LINUX_MM_INLINE_H
#define LINUX_MM_INLINE_H
#include <linux/huge_mm.h>
/**
* page_is_file_cache - should the page be on a file LRU or anon LRU?
* @page: the page to test
@@ -24,7 +26,7 @@ __add_page_to_lru_list(struct zone *zone, struct page *page, enum lru_list l,
struct list_head *head)
{
list_add(&page->lru, head);
__inc_zone_state(zone, NR_LRU_BASE + l);
__mod_zone_page_state(zone, NR_LRU_BASE + l, hpage_nr_pages(page));
mem_cgroup_add_lru_list(page, l);
}
@@ -38,7 +40,7 @@ static inline void
del_page_from_lru_list(struct zone *zone, struct page *page, enum lru_list l)
{
list_del(&page->lru);
__dec_zone_state(zone, NR_LRU_BASE + l);
__mod_zone_page_state(zone, NR_LRU_BASE + l, -hpage_nr_pages(page));
mem_cgroup_del_lru_list(page, l);
}
@@ -73,7 +75,7 @@ del_page_from_lru(struct zone *zone, struct page *page)
l += LRU_ACTIVE;
}
}
__dec_zone_state(zone, NR_LRU_BASE + l);
__mod_zone_page_state(zone, NR_LRU_BASE + l, -hpage_nr_pages(page));
mem_cgroup_del_lru_list(page, l);
}