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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: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Miaohe Lin 2021-02-24 12:07:36 -08:00 committed by Linus Torvalds
parent bae8495381
commit 8938494c85
1 changed files with 3 additions and 3 deletions
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6
mm/hugetlb_cgroup.c
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@ -113,7 +113,7 @@ static void hugetlb_cgroup_init(struct hugetlb_cgroup *h_cgroup,
rsvd_parent); rsvd_parent);
limit = round_down(PAGE_COUNTER_MAX, limit = round_down(PAGE_COUNTER_MAX,
1 << huge_page_order(&hstates[idx])); pages_per_huge_page(&hstates[idx]));
ret = page_counter_set_max( ret = page_counter_set_max(
hugetlb_cgroup_counter_from_cgroup(h_cgroup, idx), 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]; counter = &h_cg->hugepage[idx];
limit = round_down(PAGE_COUNTER_MAX, limit = round_down(PAGE_COUNTER_MAX,
1 << huge_page_order(&hstates[idx])); pages_per_huge_page(&hstates[idx]));
switch (MEMFILE_ATTR(cft->private)) { switch (MEMFILE_ATTR(cft->private)) {
case RES_RSVD_USAGE: case RES_RSVD_USAGE:
@ -507,7 +507,7 @@ static ssize_t hugetlb_cgroup_write(struct kernfs_open_file *of,
return ret; return ret;
idx = MEMFILE_IDX(of_cft(of)->private); 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)) { switch (MEMFILE_ATTR(of_cft(of)->private)) {
case RES_RSVD_LIMIT: case RES_RSVD_LIMIT: