The patch titled
Subject: hugetlb: add charge/uncharge calls for HugeTLB alloc/free
has been added to the -mm tree. Its filename is
hugetlb-add-charge-uncharge-calls-for-hugetlb-alloc-free.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: "Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxxxxxxx>
Subject: hugetlb: add charge/uncharge calls for HugeTLB alloc/free
This adds necessary charge/uncharge calls in the HugeTLB code. We do
memcg charge in page alloc and uncharge in compound page destructor. We
also need to ignore HugeTLB pages in __mem_cgroup_uncharge_common because
that get called from delete_from_page_cache
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxxxxxxx>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Acked-by: Hillf Danton <dhillf@xxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxx>
Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/hugetlb.c | 20 +++++++++++++++++++-
mm/memcontrol.c | 5 +++++
2 files changed, 24 insertions(+), 1 deletion(-)
diff -puN mm/hugetlb.c~hugetlb-add-charge-uncharge-calls-for-hugetlb-alloc-free mm/hugetlb.c
--- a/mm/hugetlb.c~hugetlb-add-charge-uncharge-calls-for-hugetlb-alloc-free
+++ a/mm/hugetlb.c
@@ -21,6 +21,8 @@
#include <linux/rmap.h>
#include <linux/swap.h>
#include <linux/swapops.h>
+#include <linux/memcontrol.h>
+#include <linux/page_cgroup.h>
#include <asm/page.h>
#include <asm/pgtable.h>
@@ -628,6 +630,8 @@ static void free_huge_page(struct page *
BUG_ON(page_mapcount(page));
INIT_LIST_HEAD(&page->lru);
+ mem_cgroup_hugetlb_uncharge_page(hstate_index(h),
+ pages_per_huge_page(h), page);
spin_lock(&hugetlb_lock);
if (h->surplus_huge_pages_node[nid] && huge_page_order(h) < MAX_ORDER) {
update_and_free_page(h, page);
@@ -1113,7 +1117,10 @@ static struct page *alloc_huge_page(stru
struct hstate *h = hstate_vma(vma);
struct page *page;
long chg;
+ int ret, idx;
+ struct mem_cgroup *memcg;
+ idx = hstate_index(h);
/*
* Processes that did not create the mapping will have no
* reserves and will not have accounted against subpool
@@ -1129,6 +1136,12 @@ static struct page *alloc_huge_page(stru
if (hugepage_subpool_get_pages(spool, chg))
return ERR_PTR(-ENOSPC);
+ ret = mem_cgroup_hugetlb_charge_page(idx, pages_per_huge_page(h),
+ &memcg);
+ if (ret) {
+ hugepage_subpool_put_pages(spool, chg);
+ return ERR_PTR(-ENOSPC);
+ }
spin_lock(&hugetlb_lock);
page = dequeue_huge_page_vma(h, vma, addr, avoid_reserve);
spin_unlock(&hugetlb_lock);
@@ -1136,6 +1149,9 @@ static struct page *alloc_huge_page(stru
if (!page) {
page = alloc_buddy_huge_page(h, NUMA_NO_NODE);
if (!page) {
+ mem_cgroup_hugetlb_uncharge_memcg(idx,
+ pages_per_huge_page(h),
+ memcg);
hugepage_subpool_put_pages(spool, chg);
return ERR_PTR(-ENOSPC);
}
@@ -1144,7 +1160,9 @@ static struct page *alloc_huge_page(stru
set_page_private(page, (unsigned long)spool);
vma_commit_reservation(h, vma, addr);
-
+ /* update page cgroup details */
+ mem_cgroup_hugetlb_commit_charge(idx, pages_per_huge_page(h),
+ memcg, page);
return page;
}
diff -puN mm/memcontrol.c~hugetlb-add-charge-uncharge-calls-for-hugetlb-alloc-free mm/memcontrol.c
--- a/mm/memcontrol.c~hugetlb-add-charge-uncharge-calls-for-hugetlb-alloc-free
+++ a/mm/memcontrol.c
@@ -2966,6 +2966,11 @@ __mem_cgroup_uncharge_common(struct page
if (PageSwapCache(page))
return NULL;
+ /*
+ * HugeTLB page uncharge happen in the HugeTLB compound page destructor
+ */
+ if (PageHuge(page))
+ return NULL;
if (PageTransHuge(page)) {
nr_pages <<= compound_order(page);
_
Subject: Subject: hugetlb: add charge/uncharge calls for HugeTLB alloc/free
Patches currently in -mm which might be from aneesh.kumar@xxxxxxxxxxxxxxxxxx are
linux-next.patch
hugetlbfs-lockdep-annotate-root-inode-properly.patch
hugetlb-rename-max_hstate-to-hugetlb_max_hstate.patch
hugetlbfs-dont-use-err_ptr-with-vm_fault-values.patch
hugetlbfs-add-an-inline-helper-for-finding-hstate-index.patch
hugetlb-use-mmu_gather-instead-of-a-temporary-linked-list-for-accumulating-pages.patch
hugetlb-avoid-taking-i_mmap_mutex-in-unmap_single_vma-for-hugetlb.patch
hugetlb-simplify-migrate_huge_page.patch
memcg-add-hugetlb-extension.patch
hugetlb-add-charge-uncharge-calls-for-hugetlb-alloc-free.patch
memcg-track-resource-index-in-cftype-private.patch
hugetlbfs-add-memcg-control-files-for-hugetlbfs.patch
hugetlbfs-add-a-list-for-tracking-in-use-hugetlb-pages.patch
memcg-move-hugetlb-resource-count-to-parent-cgroup-on-memcg-removal.patch
hugetlb-migrate-memcg-info-from-oldpage-to-new-page-during-migration.patch
memcg-add-memory-controller-documentation-for-hugetlb-management.patch
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
