The patch titled
thp: memcg huge memory
has been added to the -mm tree. Its filename is
thp-memcg-huge-memory.patch
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*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find
out what to do about this
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: thp: memcg huge memory
From: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Add memcg charge/uncharge to hugepage faults in huge_memory.c.
Signed-off-by: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Acked-by: Rik van Riel <riel@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/huge_memory.c | 36 +++++++++++++++++++++++++++++++-----
1 file changed, 31 insertions(+), 5 deletions(-)
diff -puN mm/huge_memory.c~thp-memcg-huge-memory mm/huge_memory.c
--- a/mm/huge_memory.c~thp-memcg-huge-memory
+++ a/mm/huge_memory.c
@@ -233,6 +233,7 @@ static int __do_huge_pmd_anonymous_page(
VM_BUG_ON(!PageCompound(page));
pgtable = pte_alloc_one(mm, haddr);
if (unlikely(!pgtable)) {
+ mem_cgroup_uncharge_page(page);
put_page(page);
return VM_FAULT_OOM;
}
@@ -243,6 +244,7 @@ static int __do_huge_pmd_anonymous_page(
spin_lock(&mm->page_table_lock);
if (unlikely(!pmd_none(*pmd))) {
spin_unlock(&mm->page_table_lock);
+ mem_cgroup_uncharge_page(page);
put_page(page);
pte_free(mm, pgtable);
} else {
@@ -286,6 +288,10 @@ int do_huge_pmd_anonymous_page(struct mm
page = alloc_hugepage(transparent_hugepage_defrag(vma));
if (unlikely(!page))
goto out;
+ if (unlikely(mem_cgroup_newpage_charge(page, mm, GFP_KERNEL))) {
+ put_page(page);
+ goto out;
+ }
return __do_huge_pmd_anonymous_page(mm, vma, haddr, pmd, page);
}
@@ -402,9 +408,17 @@ static int do_huge_pmd_wp_page_fallback(
for (i = 0; i < HPAGE_PMD_NR; i++) {
pages[i] = alloc_page_vma(GFP_HIGHUSER_MOVABLE,
vma, address);
- if (unlikely(!pages[i])) {
- while (--i >= 0)
+ if (unlikely(!pages[i] ||
+ mem_cgroup_newpage_charge(pages[i], mm,
+ GFP_KERNEL))) {
+ if (pages[i])
put_page(pages[i]);
+ mem_cgroup_uncharge_start();
+ while (--i >= 0) {
+ mem_cgroup_uncharge_page(pages[i]);
+ put_page(pages[i]);
+ }
+ mem_cgroup_uncharge_end();
kfree(pages);
ret |= VM_FAULT_OOM;
goto out;
@@ -455,8 +469,12 @@ out:
out_free_pages:
spin_unlock(&mm->page_table_lock);
- for (i = 0; i < HPAGE_PMD_NR; i++)
+ mem_cgroup_uncharge_start();
+ for (i = 0; i < HPAGE_PMD_NR; i++) {
+ mem_cgroup_uncharge_page(pages[i]);
put_page(pages[i]);
+ }
+ mem_cgroup_uncharge_end();
kfree(pages);
goto out;
}
@@ -501,14 +519,22 @@ int do_huge_pmd_wp_page(struct mm_struct
goto out;
}
+ if (unlikely(mem_cgroup_newpage_charge(new_page, mm, GFP_KERNEL))) {
+ put_page(new_page);
+ put_page(page);
+ ret |= VM_FAULT_OOM;
+ goto out;
+ }
+
copy_user_huge_page(new_page, page, haddr, vma, HPAGE_PMD_NR);
__SetPageUptodate(new_page);
spin_lock(&mm->page_table_lock);
put_page(page);
- if (unlikely(!pmd_same(*pmd, orig_pmd)))
+ if (unlikely(!pmd_same(*pmd, orig_pmd))) {
+ mem_cgroup_uncharge_page(new_page);
put_page(new_page);
- else {
+ } else {
pmd_t entry;
VM_BUG_ON(!PageHead(page));
entry = mk_pmd(new_page, vma->vm_page_prot);
_
Patches currently in -mm which might be from aarcange@xxxxxxxxxx are
mm-compaction-add-trace-events-for-memory-compaction-activity.patch
mm-vmscan-convert-lumpy_mode-into-a-bitmask.patch
mm-vmscan-reclaim-order-0-and-use-compaction-instead-of-lumpy-reclaim.patch
mm-vmscan-reclaim-order-0-and-use-compaction-instead-of-lumpy-reclaim-fix.patch
mm-migration-allow-migration-to-operate-asynchronously-and-avoid-synchronous-compaction-in-the-faster-path.patch
mm-migration-allow-migration-to-operate-asynchronously-and-avoid-synchronous-compaction-in-the-faster-path-fix.patch
mm-migration-cleanup-migrate_pages-api-by-matching-types-for-offlining-and-sync.patch
mm-compaction-perform-a-faster-migration-scan-when-migrating-asynchronously.patch
mm-vmscan-rename-lumpy_mode-to-reclaim_mode.patch
mm-vmscan-rename-lumpy_mode-to-reclaim_mode-fix.patch
thp-ksm-free-swap-when-swapcache-page-is-replaced.patch
thp-fix-bad_page-to-show-the-real-reason-the-page-is-bad.patch
thp-transparent-hugepage-support-documentation.patch
thp-mm-define-madv_hugepage.patch
thp-compound_lock.patch
thp-alter-compound-get_page-put_page.patch
thp-put_page-recheck-pagehead-after-releasing-the-compound_lock.patch
thp-update-futex-compound-knowledge.patch
thp-clear-compound-mapping.patch
thp-add-native_set_pmd_at.patch
thp-add-pmd-paravirt-ops.patch
thp-no-paravirt-version-of-pmd-ops.patch
thp-export-maybe_mkwrite.patch
thp-comment-reminder-in-destroy_compound_page.patch
thp-config_transparent_hugepage.patch
thp-special-pmd_trans_-functions.patch
thp-add-pmd-mangling-generic-functions.patch
thp-add-pmd-mangling-functions-to-x86.patch
thp-bail-out-gup_fast-on-splitting-pmd.patch
thp-pte-alloc-trans-splitting.patch
thp-add-pmd-mmu_notifier-helpers.patch
thp-clear-page-compound.patch
thp-add-pmd_huge_pte-to-mm_struct.patch
thp-split_huge_page_mm-vma.patch
thp-split_huge_page-paging.patch
thp-clear_copy_huge_page.patch
thp-_gfp_no_kswapd.patch
thp-dont-alloc-harder-for-gfp-nomemalloc-even-if-nowait.patch
thp-transparent-hugepage-core.patch
thp-split_huge_page-anon_vma-ordering-dependency.patch
thp-verify-pmd_trans_huge-isnt-leaking.patch
thp-madvisemadv_hugepage.patch
thp-add-pagetranscompound.patch
thp-pmd_trans_huge-migrate-bugcheck.patch
thp-memcg-compound.patch
thp-transhuge-memcg-commit-tail-pages-at-charge.patch
thp-memcg-huge-memory.patch
thp-transparent-hugepage-vmstat.patch
thp-khugepaged.patch
thp-khugepaged-vma-merge.patch
thp-skip-transhuge-pages-in-ksm-for-now.patch
thp-remove-pg_buddy.patch
thp-add-x86-32bit-support.patch
thp-mincore-transparent-hugepage-support.patch
thp-add-pmd_modify.patch
thp-mprotect-pass-vma-down-to-page-table-walkers.patch
thp-mprotect-transparent-huge-page-support.patch
thp-set-recommended-min-free-kbytes.patch
thp-enable-direct-defrag.patch
thp-add-numa-awareness-to-hugepage-allocations.patch
thp-allocate-memory-in-khugepaged-outside-of-mmap_sem-write-mode.patch
thp-transparent-hugepage-config-choice.patch
thp-select-config_compaction-if-transparent_hugepage-enabled.patch
thp-transhuge-isolate_migratepages.patch
thp-avoid-breaking-huge-pmd-invariants-in-case-of-vma_adjust-failures.patch
thp-dont-allow-transparent-hugepage-support-without-pse.patch
thp-mmu_notifier_test_young.patch
thp-freeze-khugepaged-and-ksmd.patch
thp-use-compaction-in-kswapd-for-gfp_atomic-order-0.patch
thp-use-compaction-for-all-allocation-orders.patch
thp-disable-transparent-hugepages-by-default-on-small-systems.patch
thp-fix-anon-memory-statistics-with-transparent-hugepages.patch
thp-scale-nr_rotated-to-balance-memory-pressure.patch
thp-transparent-hugepage-sysfs-meminfo.patch
thp-add-debug-checks-for-mapcount-related-invariants.patch
thp-fix-memory-failure-hugetlbfs-vs-thp-collision.patch
thp-compound_trans_order.patch
thp-mm-define-madv_nohugepage.patch
thp-madvisemadv_nohugepage.patch
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