The patch titled
Subject: hugetlb/cgroup: assign the page hugetlb cgroup when we move the page to active list.
has been removed from the -mm tree. Its filename was
hugetlb-cgroup-assign-the-page-hugetlb-cgroup-when-we-move-the-page-to-active-list.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: "Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxxxxxxx>
Subject: hugetlb/cgroup: assign the page hugetlb cgroup when we move the page to active list.
A page's hugetlb cgroup assignment and movement to the active list should
occur with hugetlb_lock held. Otherwise when we remove the hugetlb cgroup
we will iterate the active list and find pages with NULL hugetlb cgroup
values.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Michal Hocko <mhocko@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/hugetlb.c | 22 ++++++++++------------
mm/hugetlb_cgroup.c | 5 +++--
2 files changed, 13 insertions(+), 14 deletions(-)
diff -puN mm/hugetlb.c~hugetlb-cgroup-assign-the-page-hugetlb-cgroup-when-we-move-the-page-to-active-list mm/hugetlb.c
--- a/mm/hugetlb.c~hugetlb-cgroup-assign-the-page-hugetlb-cgroup-when-we-move-the-page-to-active-list
+++ a/mm/hugetlb.c
@@ -928,14 +928,8 @@ struct page *alloc_huge_page_node(struct
page = dequeue_huge_page_node(h, nid);
spin_unlock(&hugetlb_lock);
- if (!page) {
+ if (!page)
page = alloc_buddy_huge_page(h, nid);
- if (page) {
- spin_lock(&hugetlb_lock);
- list_move(&page->lru, &h->hugepage_activelist);
- spin_unlock(&hugetlb_lock);
- }
- }
return page;
}
@@ -1150,9 +1144,13 @@ static struct page *alloc_huge_page(stru
}
spin_lock(&hugetlb_lock);
page = dequeue_huge_page_vma(h, vma, addr, avoid_reserve);
- spin_unlock(&hugetlb_lock);
-
- if (!page) {
+ if (page) {
+ /* update page cgroup details */
+ hugetlb_cgroup_commit_charge(idx, pages_per_huge_page(h),
+ h_cg, page);
+ spin_unlock(&hugetlb_lock);
+ } else {
+ spin_unlock(&hugetlb_lock);
page = alloc_buddy_huge_page(h, NUMA_NO_NODE);
if (!page) {
hugetlb_cgroup_uncharge_cgroup(idx,
@@ -1162,6 +1160,8 @@ static struct page *alloc_huge_page(stru
return ERR_PTR(-ENOSPC);
}
spin_lock(&hugetlb_lock);
+ hugetlb_cgroup_commit_charge(idx, pages_per_huge_page(h),
+ h_cg, page);
list_move(&page->lru, &h->hugepage_activelist);
spin_unlock(&hugetlb_lock);
}
@@ -1169,8 +1169,6 @@ static struct page *alloc_huge_page(stru
set_page_private(page, (unsigned long)spool);
vma_commit_reservation(h, vma, addr);
- /* update page cgroup details */
- hugetlb_cgroup_commit_charge(idx, pages_per_huge_page(h), h_cg, page);
return page;
}
diff -puN mm/hugetlb_cgroup.c~hugetlb-cgroup-assign-the-page-hugetlb-cgroup-when-we-move-the-page-to-active-list mm/hugetlb_cgroup.c
--- a/mm/hugetlb_cgroup.c~hugetlb-cgroup-assign-the-page-hugetlb-cgroup-when-we-move-the-page-to-active-list
+++ a/mm/hugetlb_cgroup.c
@@ -213,6 +213,7 @@ done:
return ret;
}
+/* Should be called with hugetlb_lock held */
void hugetlb_cgroup_commit_charge(int idx, unsigned long nr_pages,
struct hugetlb_cgroup *h_cg,
struct page *page)
@@ -220,9 +221,7 @@ void hugetlb_cgroup_commit_charge(int id
if (hugetlb_cgroup_disabled() || !h_cg)
return;
- spin_lock(&hugetlb_lock);
set_hugetlb_cgroup(page, h_cg);
- spin_unlock(&hugetlb_lock);
return;
}
@@ -389,6 +388,7 @@ int __init hugetlb_cgroup_file_init(int
void hugetlb_cgroup_migrate(struct page *oldhpage, struct page *newhpage)
{
struct hugetlb_cgroup *h_cg;
+ struct hstate *h = page_hstate(oldhpage);
if (hugetlb_cgroup_disabled())
return;
@@ -401,6 +401,7 @@ void hugetlb_cgroup_migrate(struct page
/* move the h_cg details to new cgroup */
set_hugetlb_cgroup(newhpage, h_cg);
+ list_move(&newhpage->lru, &h->hugepage_activelist);
spin_unlock(&hugetlb_lock);
cgroup_release_and_wakeup_rmdir(&h_cg->css);
return;
_
Patches currently in -mm which might be from aneesh.kumar@xxxxxxxxxxxxxxxxxx are
origin.patch
linux-next.patch
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