The patch titled
Subject: mm-hugetlb-take-refcount-under-page-table-lock-in-follow_huge_pmd-fix
has been added to the -mm tree. Its filename is
mm-hugetlb-take-refcount-under-page-table-lock-in-follow_huge_pmd-fix.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-hugetlb-take-refcount-under-page-table-lock-in-follow_huge_pmd-fix.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-hugetlb-take-refcount-under-page-table-lock-in-follow_huge_pmd-fix.patch
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------------------------------------------------------
From: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>
Subject: mm-hugetlb-take-refcount-under-page-table-lock-in-follow_huge_pmd-fix
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/hugetlb.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff -puN mm/hugetlb.c~mm-hugetlb-take-refcount-under-page-table-lock-in-follow_huge_pmd-fix mm/hugetlb.c
--- a/mm/hugetlb.c~mm-hugetlb-take-refcount-under-page-table-lock-in-follow_huge_pmd-fix
+++ a/mm/hugetlb.c
@@ -3690,6 +3690,14 @@ follow_huge_pud(struct mm_struct *mm, un
#endif /* CONFIG_ARCH_WANT_GENERAL_HUGETLB */
+/*
+ * This function calls the architecture dependent variant follow_huge_pmd()
+ * with holding page table lock depending on FOLL_GET.
+ * Whether hugepage migration is supported or not, follow() can be called
+ * with FOLL_GET from do_move_page_to_node_array(), so we need do this in
+ * common code.
+ * Should be called under read mmap_sem.
+ */
struct page *follow_huge_pmd_lock(struct vm_area_struct *vma,
unsigned long address, pmd_t *pmd, int flags)
{
_
Patches currently in -mm which might be from n-horiguchi@xxxxxxxxxxxxx are
mm-memcontrol-rewrite-charge-api-fix-hugetlb-charging.patch
mm-memcontrol-use-page-lists-for-uncharge-batching-fix-hugetlb-page-lru.patch
mm-update-the-description-for-madvise_remove.patch
mm-hwpoison-injectc-remove-unnecessary-null-test-before-debugfs_remove_recursive.patch
hwpoison-fix-race-with-changing-page-during-offlining-v2.patch
mm-hugetlb-generalize-writes-to-nr_hugepages.patch
mm-hugetlb-generalize-writes-to-nr_hugepages-fix.patch
mm-hugetlb-remove-hugetlb_zero-and-hugetlb_infinity.patch
mm-fix-potential-infinite-loop-in-dissolve_free_huge_pages.patch
mm-fix-potential-infinite-loop-in-dissolve_free_huge_pages-fix.patch
mm-softdirty-respect-vm_softdirty-in-pte-holes.patch
mm-hugetlb-take-refcount-under-page-table-lock-in-follow_huge_pmd.patch
mm-hugetlb-take-refcount-under-page-table-lock-in-follow_huge_pmd-fix.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
mm-introduce-do_shared_fault-and-drop-do_fault-fix-fix.patch
do_shared_fault-check-that-mmap_sem-is-held.patch
linux-next.patch
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