mm, oom_reaper: do not attempt to reap a task more than twice

[deliverable/linux.git] / mm / internal.h

diff --git a/mm/internal.h b/mm/internal.h
index b79abb6721cf79ac0b6a626e94fa4856c6e515a6..9b6a6c43ac391d5548d7a6e62eca30f4aadca875 100644 (file)
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -24,7 +24,8 @@
  */
 #define GFP_RECLAIM_MASK (__GFP_RECLAIM|__GFP_HIGH|__GFP_IO|__GFP_FS|\
                        __GFP_NOWARN|__GFP_REPEAT|__GFP_NOFAIL|\
-                       __GFP_NORETRY|__GFP_MEMALLOC|__GFP_NOMEMALLOC)
+                       __GFP_NORETRY|__GFP_MEMALLOC|__GFP_NOMEMALLOC|\
+                       __GFP_ATOMIC)
 
 /* The GFP flags allowed during early boot */
 #define GFP_BOOT_MASK (__GFP_BITS_MASK & ~(__GFP_RECLAIM|__GFP_IO|__GFP_FS))
@@ -35,6 +36,8 @@
 /* Do not use these with a slab allocator */
 #define GFP_SLAB_BUG_MASK (__GFP_DMA32|__GFP_HIGHMEM|~__GFP_BITS_MASK)
 
+int do_swap_page(struct fault_env *fe, pte_t orig_pte);
+
 void free_pgtables(struct mmu_gather *tlb, struct vm_area_struct *start_vma,
                unsigned long floor, unsigned long ceiling);
 
@@ -58,7 +61,7 @@ static inline unsigned long ra_submit(struct file_ra_state *ra,
 }
 
 /*
- * Turn a non-refcounted page (->_count == 0) into refcounted with
+ * Turn a non-refcounted page (->_refcount == 0) into refcounted with
  * a count of one.
  */
 static inline void set_page_refcounted(struct page *page)
@@ -102,13 +105,14 @@ extern pmd_t *mm_find_pmd(struct mm_struct *mm, unsigned long address);
 struct alloc_context {
        struct zonelist *zonelist;
        nodemask_t *nodemask;
-       struct zone *preferred_zone;
-       int classzone_idx;
+       struct zoneref *preferred_zoneref;
        int migratetype;
        enum zone_type high_zoneidx;
        bool spread_dirty_pages;
 };
 
+#define ac_classzone_idx(ac) zonelist_zone_idx(ac->preferred_zoneref)
+
 /*
  * Locate the struct page for both the matching buddy in our
  * pair (buddy1) and the combined O(n+1) page they form (page).
@@ -148,6 +152,8 @@ extern int __isolate_free_page(struct page *page, unsigned int order);
 extern void __free_pages_bootmem(struct page *page, unsigned long pfn,
                                        unsigned int order);
 extern void prep_compound_page(struct page *page, unsigned int order);
+extern void post_alloc_hook(struct page *page, unsigned int order,
+                                       gfp_t gfp_flags);
 extern int user_min_free_kbytes;
 
 #if defined CONFIG_COMPACTION || defined CONFIG_CMA
@@ -173,9 +179,10 @@ struct compact_control {
        enum migrate_mode mode;         /* Async or sync migration mode */
        bool ignore_skip_hint;          /* Scan blocks even if marked skip */
        bool direct_compaction;         /* False from kcompactd or /proc/... */
+       bool whole_zone;                /* Whole zone has been scanned */
        int order;                      /* order a direct compactor needs */
        const gfp_t gfp_mask;           /* gfp mask of a direct compactor */
-       const int alloc_flags;          /* alloc flags of a direct compactor */
+       const unsigned int alloc_flags; /* alloc flags of a direct compactor */
        const int classzone_idx;        /* zone index of a direct compactor */
        struct zone *zone;
        int contended;                  /* Signal need_sched() or lock
@@ -440,7 +447,7 @@ extern u64 hwpoison_filter_flags_value;
 extern u64 hwpoison_filter_memcg;
 extern u32 hwpoison_filter_enable;
 
-extern unsigned long vm_mmap_pgoff(struct file *, unsigned long,
+extern unsigned long  __must_check vm_mmap_pgoff(struct file *, unsigned long,
         unsigned long, unsigned long,
         unsigned long, unsigned long);