Commit 8938494c authored by Miaohe Lin's avatar Miaohe Lin Committed by Linus Torvalds
Browse files

hugetlb_cgroup: use helper pages_per_huge_page() in hugetlb_cgroup 

We could use helper function pages_per_huge_page() to get the number of
pages in a hstate to simplify the code slightly.

Link: https://lkml.kernel.org/r/20210205084513.29624-1-linmiaohe@huawei.com


Signed-off-by: default avatarMiaohe Lin <linmiaohe@huawei.com>
Reviewed-by: default avatarDavid Hildenbrand <david@redhat.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent bae84953

mm/hugetlb_cgroup.c

+3 −3
Original line number Diff line number Diff line
@@ -113,7 +113,7 @@ static void hugetlb_cgroup_init(struct hugetlb_cgroup *h_cgroup, 
			rsvd_parent);



		limit = round_down(PAGE_COUNTER_MAX,

				   1 << huge_page_order(&hstates[idx]));

				   pages_per_huge_page(&hstates[idx]));



		ret = page_counter_set_max(

			hugetlb_cgroup_counter_from_cgroup(h_cgroup, idx),
@@ -460,7 +460,7 @@ static int hugetlb_cgroup_read_u64_max(struct seq_file *seq, void *v) 
	counter = &h_cg->hugepage[idx];



	limit = round_down(PAGE_COUNTER_MAX,

			   1 << huge_page_order(&hstates[idx]));

			   pages_per_huge_page(&hstates[idx]));



	switch (MEMFILE_ATTR(cft->private)) {

	case RES_RSVD_USAGE:
@@ -507,7 +507,7 @@ 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]));

	nr_pages = round_down(nr_pages, pages_per_huge_page(&hstates[idx]));



	switch (MEMFILE_ATTR(of_cft(of)->private)) {

	case RES_RSVD_LIMIT: