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authorLinus Torvalds <torvalds@linux-foundation.org>2016-04-29 11:21:22 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-04-29 11:21:22 -0700
commit1d003af2effbf10ef7b08736606dd306a29b3396 (patch)
tree1801e223f1ed61788df63be5f11702afdea457e5 /include
parent92c19ea9535707701861b7533253a516c7d115c9 (diff)
parent7c88a292dfcd6979e839493ef18d04770eb3bad0 (diff)
downloadlinux-1d003af2effbf10ef7b08736606dd306a29b3396.tar.bz2
Merge branch 'akpm' (patches from Andrew)
Merge fixes from Andrew Morton: "20 fixes" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: Documentation/sysctl/vm.txt: update numa_zonelist_order description lib/stackdepot.c: allow the stack trace hash to be zero rapidio: fix potential NULL pointer dereference mm/memory-failure: fix race with compound page split/merge ocfs2/dlm: return zero if deref_done message is successfully handled Ananth has moved kcov: don't profile branches in kcov kcov: don't trace the code coverage code mm: wake kcompactd before kswapd's short sleep .mailmap: add Frank Rowand mm/hwpoison: fix wrong num_poisoned_pages accounting mm: call swap_slot_free_notify() with page lock held mm: vmscan: reclaim highmem zone if buffer_heads is over limit numa: fix /proc/<pid>/numa_maps for THP mm/huge_memory: replace VM_NO_THP VM_BUG_ON with actual VMA check mailmap: fix Krzysztof Kozlowski's misspelled name thp: keep huge zero page pinned until tlb flush mm: exclude HugeTLB pages from THP page_mapped() logic kexec: export OFFSET(page.compound_head) to find out compound tail page kexec: update VMCOREINFO for compound_order/dtor
Diffstat (limited to 'include')
-rw-r--r--include/linux/huge_mm.h5
-rw-r--r--include/linux/mm.h4
2 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
index 7008623e24b1..d7b9e5346fba 100644
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h
@@ -152,6 +152,7 @@ static inline bool is_huge_zero_pmd(pmd_t pmd)
}
struct page *get_huge_zero_page(void);
+void put_huge_zero_page(void);
#else /* CONFIG_TRANSPARENT_HUGEPAGE */
#define HPAGE_PMD_SHIFT ({ BUILD_BUG(); 0; })
@@ -208,6 +209,10 @@ static inline bool is_huge_zero_page(struct page *page)
return false;
}
+static inline void put_huge_zero_page(void)
+{
+ BUILD_BUG();
+}
static inline struct page *follow_devmap_pmd(struct vm_area_struct *vma,
unsigned long addr, pmd_t *pmd, int flags)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index a55e5be0894f..864d7221de84 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1031,6 +1031,8 @@ static inline bool page_mapped(struct page *page)
page = compound_head(page);
if (atomic_read(compound_mapcount_ptr(page)) >= 0)
return true;
+ if (PageHuge(page))
+ return false;
for (i = 0; i < hpage_nr_pages(page); i++) {
if (atomic_read(&page[i]._mapcount) >= 0)
return true;
@@ -1138,6 +1140,8 @@ struct zap_details {
struct page *vm_normal_page(struct vm_area_struct *vma, unsigned long addr,
pte_t pte);
+struct page *vm_normal_page_pmd(struct vm_area_struct *vma, unsigned long addr,
+ pmd_t pmd);
int zap_vma_ptes(struct vm_area_struct *vma, unsigned long address,
unsigned long size);