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Diffstat (limited to 'include/linux/gfp.h')
-rw-r--r--include/linux/gfp.h15
1 files changed, 12 insertions, 3 deletions
diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index da8aa872eb6e..f8ffcd401c5f 100644
--- a/include/linux/gfp.h
+++ b/include/linux/gfp.h
@@ -48,9 +48,10 @@ 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))
/* This equals 0, but use constants in case they ever change */
@@ -60,6 +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)
@@ -80,7 +83,7 @@ struct vm_area_struct;
#endif
/* This mask makes up all the page movable related flags */
-#define GFP_MOVABLE_MASK (__GFP_MOVABLE)
+#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|\
@@ -129,6 +132,12 @@ 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