Remove set_migrateflags()

[linux-2.6-omap-h63xx.git] / include / linux / gfp.h

diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index bc68dd9a6d41f8035fa9d1f0dcc27578085fe1b5..c17ba4945203195e88bd5a8fa51aaaf6d9816708 100644 (file)
--- a/include/linux/gfp.h
+++ b/include/linux/gfp.h
@@ -48,18 +48,12 @@ struct vm_area_struct;
 #define __GFP_NOMEMALLOC ((__force gfp_t)0x10000u) /* Don't use emergency reserves */
 #define __GFP_HARDWALL   ((__force gfp_t)0x20000u) /* Enforce hardwall cpuset memory allocs */
 #define __GFP_THISNODE ((__force gfp_t)0x40000u)/* No fallback, no policies */
-#define __GFP_MOVABLE  ((__force gfp_t)0x80000u) /* Page is movable */
+#define __GFP_RECLAIMABLE ((__force gfp_t)0x80000u) /* Page is reclaimable */
+#define __GFP_MOVABLE  ((__force gfp_t)0x100000u)  /* Page is movable */
 
-#define __GFP_BITS_SHIFT 20    /* Room for 20 __GFP_FOO bits */
+#define __GFP_BITS_SHIFT 21    /* Room for 21 __GFP_FOO bits */
 #define __GFP_BITS_MASK ((__force gfp_t)((1 << __GFP_BITS_SHIFT) - 1))
 
-/* if you forget to add the bitmask here kernel will crash, period */
-#define GFP_LEVEL_MASK (__GFP_WAIT|__GFP_HIGH|__GFP_IO|__GFP_FS| \
-                       __GFP_COLD|__GFP_NOWARN|__GFP_REPEAT| \
-                       __GFP_NOFAIL|__GFP_NORETRY|__GFP_COMP| \
-                       __GFP_NOMEMALLOC|__GFP_HARDWALL|__GFP_THISNODE| \
-                       __GFP_MOVABLE)
-
 /* This equals 0, but use constants in case they ever change */
 #define GFP_NOWAIT     (GFP_ATOMIC & ~__GFP_HIGH)
 /* GFP_ATOMIC means both !wait (__GFP_WAIT not set) and use emergency pool */
@@ -67,6 +61,8 @@ struct vm_area_struct;
 #define GFP_NOIO       (__GFP_WAIT)
 #define GFP_NOFS       (__GFP_WAIT | __GFP_IO)
 #define GFP_KERNEL     (__GFP_WAIT | __GFP_IO | __GFP_FS)
+#define GFP_TEMPORARY  (__GFP_WAIT | __GFP_IO | __GFP_FS | \
+                        __GFP_RECLAIMABLE)
 #define GFP_USER       (__GFP_WAIT | __GFP_IO | __GFP_FS | __GFP_HARDWALL)
 #define GFP_HIGHUSER   (__GFP_WAIT | __GFP_IO | __GFP_FS | __GFP_HARDWALL | \
                         __GFP_HIGHMEM)
@@ -86,6 +82,19 @@ struct vm_area_struct;
 #define GFP_THISNODE   ((__force gfp_t)0)
 #endif
 
+/* This mask makes up all the page movable related flags */
+#define GFP_MOVABLE_MASK (__GFP_RECLAIMABLE|__GFP_MOVABLE)
+
+/* Control page allocator reclaim behavior */
+#define GFP_RECLAIM_MASK (__GFP_WAIT|__GFP_HIGH|__GFP_IO|__GFP_FS|\
+                       __GFP_NOWARN|__GFP_REPEAT|__GFP_NOFAIL|\
+                       __GFP_NORETRY|__GFP_NOMEMALLOC)
+
+/* Control allocation constraints */
+#define GFP_CONSTRAINT_MASK (__GFP_HARDWALL|__GFP_THISNODE)
+
+/* Do not use these with a slab allocator */
+#define GFP_SLAB_BUG_MASK (__GFP_DMA32|__GFP_HIGHMEM|~__GFP_BITS_MASK)
 
 /* Flag - indicates that the buffer will be suitable for DMA.  Ignored on some
    platforms, used as appropriate on others */
@@ -95,25 +104,44 @@ struct vm_area_struct;
 /* 4GB DMA on some platforms */
 #define GFP_DMA32      __GFP_DMA32
 
+/* Convert GFP flags to their corresponding migrate type */
+static inline int allocflags_to_migratetype(gfp_t gfp_flags)
+{
+       WARN_ON((gfp_flags & GFP_MOVABLE_MASK) == GFP_MOVABLE_MASK);
+
+       if (unlikely(page_group_by_mobility_disabled))
+               return MIGRATE_UNMOVABLE;
+
+       /* Group based on mobility */
+       return (((gfp_flags & __GFP_MOVABLE) != 0) << 1) |
+               ((gfp_flags & __GFP_RECLAIMABLE) != 0);
+}
 
 static inline enum zone_type gfp_zone(gfp_t flags)
 {
+       int base = 0;
+
+#ifdef CONFIG_NUMA
+       if (flags & __GFP_THISNODE)
+               base = MAX_NR_ZONES;
+#endif
+
 #ifdef CONFIG_ZONE_DMA
        if (flags & __GFP_DMA)
-               return ZONE_DMA;
+               return base + ZONE_DMA;
 #endif
 #ifdef CONFIG_ZONE_DMA32
        if (flags & __GFP_DMA32)
-               return ZONE_DMA32;
+               return base + ZONE_DMA32;
 #endif
        if ((flags & (__GFP_HIGHMEM | __GFP_MOVABLE)) ==
                        (__GFP_HIGHMEM | __GFP_MOVABLE))
-               return ZONE_MOVABLE;
+               return base + ZONE_MOVABLE;
 #ifdef CONFIG_HIGHMEM
        if (flags & __GFP_HIGHMEM)
-               return ZONE_HIGHMEM;
+               return base + ZONE_HIGHMEM;
 #endif
-       return ZONE_NORMAL;
+       return base + ZONE_NORMAL;
 }
 
 /*
@@ -138,8 +166,7 @@ static inline void arch_free_page(struct page *page, int order) { }
 static inline void arch_alloc_page(struct page *page, int order) { }
 #endif
 
-extern struct page *
-FASTCALL(__alloc_pages(gfp_t, unsigned int, struct zonelist *));
+extern struct page *__alloc_pages(gfp_t, unsigned int, struct zonelist *);
 
 static inline struct page *alloc_pages_node(int nid, gfp_t gfp_mask,
                                                unsigned int order)
@@ -175,8 +202,8 @@ extern struct page *alloc_page_vma(gfp_t gfp_mask,
 #endif
 #define alloc_page(gfp_mask) alloc_pages(gfp_mask, 0)
 
-extern unsigned long FASTCALL(__get_free_pages(gfp_t gfp_mask, unsigned int order));
-extern unsigned long FASTCALL(get_zeroed_page(gfp_t gfp_mask));
+extern unsigned long __get_free_pages(gfp_t gfp_mask, unsigned int order);
+extern unsigned long get_zeroed_page(gfp_t gfp_mask);
 
 #define __get_free_page(gfp_mask) \
                __get_free_pages((gfp_mask),0)
@@ -184,15 +211,17 @@ extern unsigned long FASTCALL(get_zeroed_page(gfp_t gfp_mask));
 #define __get_dma_pages(gfp_mask, order) \
                __get_free_pages((gfp_mask) | GFP_DMA,(order))
 
-extern void FASTCALL(__free_pages(struct page *page, unsigned int order));
-extern void FASTCALL(free_pages(unsigned long addr, unsigned int order));
-extern void FASTCALL(free_hot_page(struct page *page));
-extern void FASTCALL(free_cold_page(struct page *page));
+extern void __free_pages(struct page *page, unsigned int order);
+extern void free_pages(unsigned long addr, unsigned int order);
+extern void free_hot_page(struct page *page);
+extern void free_cold_page(struct page *page);
 
 #define __free_page(page) __free_pages((page), 0)
 #define free_page(addr) free_pages((addr),0)
 
 void page_alloc_init(void);
 void drain_zone_pages(struct zone *zone, struct per_cpu_pages *pcp);
+void drain_all_pages(void);
+void drain_local_pages(void *dummy);
 
 #endif /* __LINUX_GFP_H */