[PATCH 6/6] hugetlb: do not fail in hugetlb_cgroup_pre_destroy
From: Michal Hocko <hidden>
Date: 2012-10-17 13:31:25
Also in:
linux-mm, lkml
Subsystem:
hugetlb subsystem, memory management, the rest · Maintainers:
Muchun Song, Oscar Salvador, Andrew Morton, Linus Torvalds
Now that pre_destroy callbacks are called from within cgroup_lock and the cgroup has been checked to be empty without any children then there is no other way to fail. Signed-off-by: Michal Hocko <redacted> --- mm/hugetlb_cgroup.c | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-)
diff --git a/mm/hugetlb_cgroup.c b/mm/hugetlb_cgroup.c
index a3f358f..dc595c6 100644
--- a/mm/hugetlb_cgroup.c
+++ b/mm/hugetlb_cgroup.c@@ -159,14 +159,9 @@ static int hugetlb_cgroup_pre_destroy(struct cgroup *cgroup) { struct hstate *h; struct page *page; - int ret = 0, idx = 0; + int idx = 0; do { - if (cgroup_task_count(cgroup) || - !list_empty(&cgroup->children)) { - ret = -EBUSY; - goto out; - } for_each_hstate(h) { spin_lock(&hugetlb_lock); list_for_each_entry(page, &h->hugepage_activelist, lru)
@@ -177,8 +172,8 @@ static int hugetlb_cgroup_pre_destroy(struct cgroup *cgroup) } cond_resched(); } while (hugetlb_cgroup_have_usage(cgroup)); -out: - return ret; + + return 0; } int hugetlb_cgroup_charge_cgroup(int idx, unsigned long nr_pages,
--
1.7.10.4
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