The page_counter rounds limits down to page size values. This makes
sense, except in the case of hugetlb_cgroup where it's not possible to
charge partial hugepages.
Round the hugetlb_cgroup limit down to hugepage size.
Signed-off-by: David Rientjes <rientjes@xxxxxxxxxx>
---
mm/hugetlb_cgroup.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/mm/hugetlb_cgroup.c b/mm/hugetlb_cgroup.c
--- a/mm/hugetlb_cgroup.c
+++ b/mm/hugetlb_cgroup.c
@@ -288,6 +288,7 @@ static ssize_t hugetlb_cgroup_write(struct kernfs_open_file *of,
switch (MEMFILE_ATTR(of_cft(of)->private)) {
case RES_LIMIT:
+ nr_pages &= ~((1 << huge_page_order(&hstates[idx])) - 1);
mutex_lock(&hugetlb_limit_mutex);
ret = page_counter_limit(&h_cg->hugepage[idx], nr_pages);
mutex_unlock(&hugetlb_limit_mutex);
--
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