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-rw-r--r--include/linux/gfp.h18
1 files changed, 9 insertions, 9 deletions
diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index 4c6d41333f98..975609cb8548 100644
--- a/include/linux/gfp.h
+++ b/include/linux/gfp.h
@@ -15,7 +15,7 @@ struct vm_area_struct;
15 * Zone modifiers (see linux/mmzone.h - low three bits) 15 * Zone modifiers (see linux/mmzone.h - low three bits)
16 * 16 *
17 * Do not put any conditional on these. If necessary modify the definitions 17 * Do not put any conditional on these. If necessary modify the definitions
18 * without the underscores and use the consistently. The definitions here may 18 * without the underscores and use them consistently. The definitions here may
19 * be used in bit comparisons. 19 * be used in bit comparisons.
20 */ 20 */
21#define __GFP_DMA ((__force gfp_t)0x01u) 21#define __GFP_DMA ((__force gfp_t)0x01u)
@@ -101,7 +101,7 @@ struct vm_area_struct;
101 __GFP_NORETRY|__GFP_NOMEMALLOC) 101 __GFP_NORETRY|__GFP_NOMEMALLOC)
102 102
103/* Control slab gfp mask during early boot */ 103/* Control slab gfp mask during early boot */
104#define GFP_BOOT_MASK __GFP_BITS_MASK & ~(__GFP_WAIT|__GFP_IO|__GFP_FS) 104#define GFP_BOOT_MASK (__GFP_BITS_MASK & ~(__GFP_WAIT|__GFP_IO|__GFP_FS))
105 105
106/* Control allocation constraints */ 106/* Control allocation constraints */
107#define GFP_CONSTRAINT_MASK (__GFP_HARDWALL|__GFP_THISNODE) 107#define GFP_CONSTRAINT_MASK (__GFP_HARDWALL|__GFP_THISNODE)
@@ -152,12 +152,12 @@ static inline int allocflags_to_migratetype(gfp_t gfp_flags)
152 * GFP_ZONE_TABLE is a word size bitstring that is used for looking up the 152 * GFP_ZONE_TABLE is a word size bitstring that is used for looking up the
153 * zone to use given the lowest 4 bits of gfp_t. Entries are ZONE_SHIFT long 153 * zone to use given the lowest 4 bits of gfp_t. Entries are ZONE_SHIFT long
154 * and there are 16 of them to cover all possible combinations of 154 * and there are 16 of them to cover all possible combinations of
155 * __GFP_DMA, __GFP_DMA32, __GFP_MOVABLE and __GFP_HIGHMEM 155 * __GFP_DMA, __GFP_DMA32, __GFP_MOVABLE and __GFP_HIGHMEM.
156 * 156 *
157 * The zone fallback order is MOVABLE=>HIGHMEM=>NORMAL=>DMA32=>DMA. 157 * The zone fallback order is MOVABLE=>HIGHMEM=>NORMAL=>DMA32=>DMA.
158 * But GFP_MOVABLE is not only a zone specifier but also an allocation 158 * But GFP_MOVABLE is not only a zone specifier but also an allocation
159 * policy. Therefore __GFP_MOVABLE plus another zone selector is valid. 159 * policy. Therefore __GFP_MOVABLE plus another zone selector is valid.
160 * Only 1bit of the lowest 3 bit (DMA,DMA32,HIGHMEM) can be set to "1". 160 * Only 1 bit of the lowest 3 bits (DMA,DMA32,HIGHMEM) can be set to "1".
161 * 161 *
162 * bit result 162 * bit result
163 * ================= 163 * =================
@@ -187,7 +187,7 @@ static inline int allocflags_to_migratetype(gfp_t gfp_flags)
187 187
188#define GFP_ZONE_TABLE ( \ 188#define GFP_ZONE_TABLE ( \
189 (ZONE_NORMAL << 0 * ZONES_SHIFT) \ 189 (ZONE_NORMAL << 0 * ZONES_SHIFT) \
190 | (OPT_ZONE_DMA << __GFP_DMA * ZONES_SHIFT) \ 190 | (OPT_ZONE_DMA << __GFP_DMA * ZONES_SHIFT) \
191 | (OPT_ZONE_HIGHMEM << __GFP_HIGHMEM * ZONES_SHIFT) \ 191 | (OPT_ZONE_HIGHMEM << __GFP_HIGHMEM * ZONES_SHIFT) \
192 | (OPT_ZONE_DMA32 << __GFP_DMA32 * ZONES_SHIFT) \ 192 | (OPT_ZONE_DMA32 << __GFP_DMA32 * ZONES_SHIFT) \
193 | (ZONE_NORMAL << __GFP_MOVABLE * ZONES_SHIFT) \ 193 | (ZONE_NORMAL << __GFP_MOVABLE * ZONES_SHIFT) \
@@ -197,7 +197,7 @@ static inline int allocflags_to_migratetype(gfp_t gfp_flags)
197) 197)
198 198
199/* 199/*
200 * GFP_ZONE_BAD is a bitmap for all combination of __GFP_DMA, __GFP_DMA32 200 * GFP_ZONE_BAD is a bitmap for all combinations of __GFP_DMA, __GFP_DMA32
201 * __GFP_HIGHMEM and __GFP_MOVABLE that are not permitted. One flag per 201 * __GFP_HIGHMEM and __GFP_MOVABLE that are not permitted. One flag per
202 * entry starting with bit 0. Bit is set if the combination is not 202 * entry starting with bit 0. Bit is set if the combination is not
203 * allowed. 203 * allowed.
@@ -320,17 +320,17 @@ void *alloc_pages_exact(size_t size, gfp_t gfp_mask);
320void free_pages_exact(void *virt, size_t size); 320void free_pages_exact(void *virt, size_t size);
321 321
322#define __get_free_page(gfp_mask) \ 322#define __get_free_page(gfp_mask) \
323 __get_free_pages((gfp_mask),0) 323 __get_free_pages((gfp_mask), 0)
324 324
325#define __get_dma_pages(gfp_mask, order) \ 325#define __get_dma_pages(gfp_mask, order) \
326 __get_free_pages((gfp_mask) | GFP_DMA,(order)) 326 __get_free_pages((gfp_mask) | GFP_DMA, (order))
327 327
328extern void __free_pages(struct page *page, unsigned int order); 328extern void __free_pages(struct page *page, unsigned int order);
329extern void free_pages(unsigned long addr, unsigned int order); 329extern void free_pages(unsigned long addr, unsigned int order);
330extern void free_hot_cold_page(struct page *page, int cold); 330extern void free_hot_cold_page(struct page *page, int cold);
331 331
332#define __free_page(page) __free_pages((page), 0) 332#define __free_page(page) __free_pages((page), 0)
333#define free_page(addr) free_pages((addr),0) 333#define free_page(addr) free_pages((addr), 0)
334 334
335void page_alloc_init(void); 335void page_alloc_init(void);
336void drain_zone_pages(struct zone *zone, struct per_cpu_pages *pcp); 336void drain_zone_pages(struct zone *zone, struct per_cpu_pages *pcp);