diff options
| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2012-07-31 16:42:27 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-07-31 18:42:41 -0700 |
| commit | 8e6ac7fab374816de9a8b0a8fbb02ef761a30ff4 (patch) | |
| tree | 94439bfcceb9e11af842da63f18f608aff4919c4 /mm/migrate.c | |
| parent | abb8206cb07734d0b7bf033c715995d6371a94c3 (diff) | |
| download | lwn-8e6ac7fab374816de9a8b0a8fbb02ef761a30ff4.tar.gz lwn-8e6ac7fab374816de9a8b0a8fbb02ef761a30ff4.zip | |
hugetlb/cgroup: migrate hugetlb cgroup info from oldpage to new page during migration
With HugeTLB pages, hugetlb cgroup is uncharged in compound page
destructor. Since we are holding a hugepage reference, we can be sure
that old page won't get uncharged till the last put_page().
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: David Rientjes <rientjes@google.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Hillf Danton <dhillf@gmail.com>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/migrate.c')
| -rw-r--r-- | mm/migrate.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/mm/migrate.c b/mm/migrate.c index fdce3a29fc4c..6c37c51565e5 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -33,6 +33,7 @@ #include <linux/memcontrol.h> #include <linux/syscalls.h> #include <linux/hugetlb.h> +#include <linux/hugetlb_cgroup.h> #include <linux/gfp.h> #include <asm/tlbflush.h> @@ -931,6 +932,10 @@ static int unmap_and_move_huge_page(new_page_t get_new_page, if (anon_vma) put_anon_vma(anon_vma); + + if (!rc) + hugetlb_cgroup_migrate(hpage, new_hpage); + unlock_page(hpage); out: put_page(new_hpage); |