[NETFILTER]: x_tables: make xt_compat_match_from_user usable in iterator macros

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

diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index 12a90a191c11989b952259905a926354ae946cb6..7e93a9ae7064c3a59b0223763964181500f6d3cf 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 */
@@ -95,6 +104,18 @@ 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)
 {
@@ -123,6 +144,12 @@ static inline enum zone_type gfp_zone(gfp_t flags)
        return base + ZONE_NORMAL;
 }
 
+static inline gfp_t set_migrateflags(gfp_t gfp, gfp_t migrate_flags)
+{
+       BUG_ON((gfp & GFP_MOVABLE_MASK) == GFP_MOVABLE_MASK);
+       return (gfp & ~(GFP_MOVABLE_MASK)) | migrate_flags;
+}
+
 /*
  * There is only one page-allocator function, and two main namespaces to
  * it. The alloc_page*() variants return 'struct page *' and as such