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| author | David Rientjes <rientjes@google.com> | 2014-08-12 13:46:07 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-08-14 10:56:15 -0600 |
| commit | 24d7cd207f8e0d6864a314d5f03b5434403ff940 (patch) | |
| tree | 906bd7bcf4297a42b94ec7ade6bbee7361404afa /mm/hugetlb_cgroup.c | |
| parent | c8d6637d0497d62093dbba0694c7b3a80b79bfe1 (diff) | |
| download | lwn-24d7cd207f8e0d6864a314d5f03b5434403ff940.tar.gz lwn-24d7cd207f8e0d6864a314d5f03b5434403ff940.zip | |
mm, hugetlb_cgroup: align hugetlb cgroup limit to hugepage size
Memcg aligns memory.limit_in_bytes to PAGE_SIZE as part of the resource
counter since it makes no sense to allow a partial page to be charged.
As a result of the hugetlb cgroup using the resource counter, it is also
aligned to PAGE_SIZE but makes no sense unless aligned to the size of
the hugepage being limited.
Align hugetlb cgroup limit to hugepage size.
Signed-off-by: David Rientjes <rientjes@google.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Li Zefan <lizefan@huawei.com>
Cc: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/hugetlb_cgroup.c')
| -rw-r--r-- | mm/hugetlb_cgroup.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/hugetlb_cgroup.c b/mm/hugetlb_cgroup.c index 9aae6f47433f..9eebfadeeee1 100644 --- a/mm/hugetlb_cgroup.c +++ b/mm/hugetlb_cgroup.c @@ -275,6 +275,7 @@ static ssize_t hugetlb_cgroup_write(struct kernfs_open_file *of, ret = res_counter_memparse_write_strategy(buf, &val); if (ret) break; + val = ALIGN(val, 1ULL << huge_page_shift(&hstates[idx])); ret = res_counter_set_limit(&h_cg->hugepage[idx], val); break; default: |