The patch titled
Subject: mm, hugetlb_cgroup: align hugetlb cgroup limit to hugepage size
has been added to the -mm tree. Its filename is
mm-hugetlb_cgroup-align-hugetlb-cgroup-limit-to-hugepage-size.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-hugetlb_cgroup-align-hugetlb-cgroup-limit-to-hugepage-size.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-hugetlb_cgroup-align-hugetlb-cgroup-limit-to-hugepage-size.patch
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From: David Rientjes <rientjes@xxxxxxxxxx>
Subject: 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@xxxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxx>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Cc: Li Zefan <lizefan@xxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/hugetlb_cgroup.c | 1 +
1 file changed, 1 insertion(+)
diff -puN mm/hugetlb_cgroup.c~mm-hugetlb_cgroup-align-hugetlb-cgroup-limit-to-hugepage-size mm/hugetlb_cgroup.c
--- a/mm/hugetlb_cgroup.c~mm-hugetlb_cgroup-align-hugetlb-cgroup-limit-to-hugepage-size
+++ a/mm/hugetlb_cgroup.c
@@ -275,6 +275,7 @@ static ssize_t hugetlb_cgroup_write(stru
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:
_
Patches currently in -mm which might be from rientjes@xxxxxxxxxx are
origin.patch
revert-slab-remove-bad_alien_magic.patch
vm_is_stack-use-for_each_thread-rather-then-buggy-while_each_thread.patch
fs-proc-kcorec-use-page_align-instead-of-alignpage_size.patch
fork-exec-cleanup-mm-initialization.patch
fork-reset-mm-pinned_vm.patch
fork-copy-mms-vm-usage-counters-under-mmap_sem.patch
mm-hugetlb_cgroup-align-hugetlb-cgroup-limit-to-hugepage-size.patch
x86-numa-setup_node_data-drop-dead-code-and-rename-function.patch
x86-numa-setup_node_data-drop-dead-code-and-rename-function-v2.patch
mm-hugetlb-take-refcount-under-page-table-lock-in-follow_huge_pmd.patch
mm-hugetlb-use-get_page_unless_zero-in-hugetlb_fault.patch
mm-hugetlb-add-migration-entry-check-in-hugetlb_change_protection.patch
mm-hugetlb-remove-unused-argument-of-follow_huge_pmdpud.patch
include-kernelh-rewrite-min3-max3-and-clamp-using-min-and-max.patch
mm-utilc-add-kstrimdup.patch
linux-next.patch
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