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-rw-r--r--include/linux/rmap.h21
1 files changed, 20 insertions, 1 deletions
diff --git a/include/linux/rmap.h b/include/linux/rmap.h
index 477841d29fce..cb0ba7032609 100644
--- a/include/linux/rmap.h
+++ b/include/linux/rmap.h
@@ -81,7 +81,19 @@ static inline void page_dup_rmap(struct page *page)
81 */ 81 */
82int page_referenced(struct page *, int is_locked, 82int page_referenced(struct page *, int is_locked,
83 struct mem_cgroup *cnt, unsigned long *vm_flags); 83 struct mem_cgroup *cnt, unsigned long *vm_flags);
84int try_to_unmap(struct page *, int ignore_refs); 84enum ttu_flags {
85 TTU_UNMAP = 0, /* unmap mode */
86 TTU_MIGRATION = 1, /* migration mode */
87 TTU_MUNLOCK = 2, /* munlock mode */
88 TTU_ACTION_MASK = 0xff,
89
90 TTU_IGNORE_MLOCK = (1 << 8), /* ignore mlock */
91 TTU_IGNORE_ACCESS = (1 << 9), /* don't age */
92 TTU_IGNORE_HWPOISON = (1 << 10),/* corrupted page is recoverable */
93};
94#define TTU_ACTION(x) ((x) & TTU_ACTION_MASK)
95
96int try_to_unmap(struct page *, enum ttu_flags flags);
85 97
86/* 98/*
87 * Called from mm/filemap_xip.c to unmap empty zero page 99 * Called from mm/filemap_xip.c to unmap empty zero page
@@ -108,6 +120,13 @@ int page_mkclean(struct page *);
108 */ 120 */
109int try_to_munlock(struct page *); 121int try_to_munlock(struct page *);
110 122
123/*
124 * Called by memory-failure.c to kill processes.
125 */
126struct anon_vma *page_lock_anon_vma(struct page *page);
127void page_unlock_anon_vma(struct anon_vma *anon_vma);
128int page_mapped_in_vma(struct page *page, struct vm_area_struct *vma);
129
111#else /* !CONFIG_MMU */ 130#else /* !CONFIG_MMU */
112 131
113#define anon_vma_init() do {} while (0) 132#define anon_vma_init() do {} while (0)