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authorLinus Torvalds <torvalds@linux-foundation.org>2013-11-21 21:32:38 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2013-11-21 21:32:38 -0800
commita5d6e63323fe7799eb0e6fd0a41fbfad10fca258 (patch)
treeca52285fc4ac7fa25a8e1621782a5a51130ac08b /Documentation
parent78dc53c422172a317adb0776dfb687057ffa28b7 (diff)
parent7aa555bf26763b86332c7a3689701c999834b87a (diff)
Merge branch 'akpm' (fixes from Andrew)
Merge patches from Andrew Morton: "13 fixes" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: mm: place page->pmd_huge_pte to right union MAINTAINERS: add keyboard driver to Hyper-V file list x86, mm: do not leak page->ptl for pmd page tables ipc,shm: correct error return value in shmctl (SHM_UNLOCK) mm, mempolicy: silence gcc warning block/partitions/efi.c: fix bound check ARM: drivers/rtc/rtc-at91rm9200.c: disable interrupts at shutdown mm: hugetlbfs: fix hugetlbfs optimization kernel: remove CONFIG_USE_GENERIC_SMP_HELPERS cleanly ipc,shm: fix shm_file deletion races mm: thp: give transparent hugepage code a separate copy_page checkpatch: fix "Use of uninitialized value" warnings configfs: fix race between dentry put and lookup
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/vm/split_page_table_lock6
1 files changed, 3 insertions, 3 deletions
diff --git a/Documentation/vm/split_page_table_lock b/Documentation/vm/split_page_table_lock
index 7521d367f21d..6dea4fd5c961 100644
--- a/Documentation/vm/split_page_table_lock
+++ b/Documentation/vm/split_page_table_lock
@@ -63,9 +63,9 @@ levels.
PMD split lock enabling requires pgtable_pmd_page_ctor() call on PMD table
allocation and pgtable_pmd_page_dtor() on freeing.
-Allocation usually happens in pmd_alloc_one(), freeing in pmd_free(), but
-make sure you cover all PMD table allocation / freeing paths: i.e X86_PAE
-preallocate few PMDs on pgd_alloc().
+Allocation usually happens in pmd_alloc_one(), freeing in pmd_free() and
+pmd_free_tlb(), but make sure you cover all PMD table allocation / freeing
+paths: i.e X86_PAE preallocate few PMDs on pgd_alloc().
With everything in place you can set CONFIG_ARCH_ENABLE_SPLIT_PMD_PTLOCK.