diff options
author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-09-11 04:34:46 -0300 |
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committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-09-11 04:34:46 -0300 |
commit | 863981e96738983919de841ec669e157e6bdaeb0 (patch) | |
tree | d6d89a12e7eb8017837c057935a2271290907f76 /mm/hugetlb_cgroup.c | |
parent | 8dec7c70575785729a6a9e6719a955e9c545bcab (diff) |
Linux-libre 4.7.1-gnupck-4.7.1-gnu
Diffstat (limited to 'mm/hugetlb_cgroup.c')
-rw-r--r-- | mm/hugetlb_cgroup.c | 35 |
1 files changed, 26 insertions, 9 deletions
diff --git a/mm/hugetlb_cgroup.c b/mm/hugetlb_cgroup.c index d8fb10de0..eec115012 100644 --- a/mm/hugetlb_cgroup.c +++ b/mm/hugetlb_cgroup.c @@ -67,26 +67,42 @@ static inline bool hugetlb_cgroup_have_usage(struct hugetlb_cgroup *h_cg) return false; } +static void hugetlb_cgroup_init(struct hugetlb_cgroup *h_cgroup, + struct hugetlb_cgroup *parent_h_cgroup) +{ + int idx; + + for (idx = 0; idx < HUGE_MAX_HSTATE; idx++) { + struct page_counter *counter = &h_cgroup->hugepage[idx]; + struct page_counter *parent = NULL; + unsigned long limit; + int ret; + + if (parent_h_cgroup) + parent = &parent_h_cgroup->hugepage[idx]; + page_counter_init(counter, parent); + + limit = round_down(PAGE_COUNTER_MAX, + 1 << huge_page_order(&hstates[idx])); + ret = page_counter_limit(counter, limit); + VM_BUG_ON(ret); + } +} + static struct cgroup_subsys_state * hugetlb_cgroup_css_alloc(struct cgroup_subsys_state *parent_css) { struct hugetlb_cgroup *parent_h_cgroup = hugetlb_cgroup_from_css(parent_css); struct hugetlb_cgroup *h_cgroup; - int idx; h_cgroup = kzalloc(sizeof(*h_cgroup), GFP_KERNEL); if (!h_cgroup) return ERR_PTR(-ENOMEM); - if (parent_h_cgroup) { - for (idx = 0; idx < HUGE_MAX_HSTATE; idx++) - page_counter_init(&h_cgroup->hugepage[idx], - &parent_h_cgroup->hugepage[idx]); - } else { + if (!parent_h_cgroup) root_h_cgroup = h_cgroup; - for (idx = 0; idx < HUGE_MAX_HSTATE; idx++) - page_counter_init(&h_cgroup->hugepage[idx], NULL); - } + + hugetlb_cgroup_init(h_cgroup, parent_h_cgroup); return &h_cgroup->css; } @@ -285,6 +301,7 @@ static ssize_t hugetlb_cgroup_write(struct kernfs_open_file *of, return ret; idx = MEMFILE_IDX(of_cft(of)->private); + nr_pages = round_down(nr_pages, 1 << huge_page_order(&hstates[idx])); switch (MEMFILE_ATTR(of_cft(of)->private)) { case RES_LIMIT: |