[PATCH -V4 05/10] hugetlb: add charge/uncharge calls for HugeTLB alloc/free
From: Aneesh Kumar K.V <hidden>
Date: 2012-03-16 17:42:41
Also in:
linux-mm, lkml
Subsystem:
control group - memory resource controller (memcg), hugetlb subsystem, memory management, the rest · Maintainers:
Johannes Weiner, Michal Hocko, Roman Gushchin, Shakeel Butt, Muchun Song, Oscar Salvador, Andrew Morton, Linus Torvalds
From: "Aneesh Kumar K.V" <redacted> This adds necessary charge/uncharge calls in the HugeTLB code Acked-by: Hillf Danton <redacted> Signed-off-by: Aneesh Kumar K.V <redacted> --- mm/hugetlb.c | 21 ++++++++++++++++++++- mm/memcontrol.c | 5 +++++ 2 files changed, 25 insertions(+), 1 deletions(-)
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index c672187..91361a0 100644
--- a/mm/hugetlb.c
+++ b/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>
@@ -542,6 +544,9 @@ static void free_huge_page(struct page *page) BUG_ON(page_mapcount(page)); INIT_LIST_HEAD(&page->lru); + if (mapping) + 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);
@@ -1019,12 +1024,15 @@ static void vma_commit_reservation(struct hstate *h, static struct page *alloc_huge_page(struct vm_area_struct *vma, unsigned long addr, int avoid_reserve) { + int ret, idx; struct hstate *h = hstate_vma(vma); struct page *page; + struct mem_cgroup *memcg = NULL; struct address_space *mapping = vma->vm_file->f_mapping; struct inode *inode = mapping->host; long chg; + idx = hstate_index(h); /* * Processes that did not create the mapping will have no reserves and * will not have accounted against quota. Check that the quota can be
@@ -1039,6 +1047,12 @@ static struct page *alloc_huge_page(struct vm_area_struct *vma, if (hugetlb_get_quota(inode->i_mapping, chg)) return ERR_PTR(-ENOSPC); + ret = mem_cgroup_hugetlb_charge_page(idx, pages_per_huge_page(h), + &memcg); + if (ret) { + hugetlb_put_quota(inode->i_mapping, chg); + return ERR_PTR(-ENOSPC); + } spin_lock(&hugetlb_lock); page = dequeue_huge_page_vma(h, vma, addr, avoid_reserve); spin_unlock(&hugetlb_lock);
@@ -1046,6 +1060,9 @@ static struct page *alloc_huge_page(struct vm_area_struct *vma, 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); hugetlb_put_quota(inode->i_mapping, chg); return ERR_PTR(-ENOSPC); }
@@ -1054,7 +1071,9 @@ static struct page *alloc_huge_page(struct vm_area_struct *vma, set_page_private(page, (unsigned long) mapping); 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 --git a/mm/memcontrol.c b/mm/memcontrol.c
index 4b36c5e..7a9ea94 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c@@ -2901,6 +2901,11 @@ __mem_cgroup_uncharge_common(struct page *page, enum charge_type ctype) 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);
--
1.7.9
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