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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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mm/memcontrol.c
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@@ -1091,7 +1091,7 @@ unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan,
case 0:
list_move(&page->lru, dst);
mem_cgroup_del_lru(page);
nr_taken++;
nr_taken += hpage_nr_pages(page);
break;
case -EBUSY:
/* we don't affect global LRU but rotate in our LRU */