11 struct scatterlist {  struct
43 	struct scatterlist *sgl;	/* the list */
75 	((struct scatterlist *) ((sg)->page_link & ~(SG_CHAIN | SG_END)))
87 static inline void sg_assign_page(struct scatterlist *sg, struct page *page)  in sg_assign_page()
116 static inline void sg_set_page(struct scatterlist *sg, struct page *page,  in sg_set_page()
124 static inline struct page *sg_page(struct scatterlist *sg)  in sg_page()
139 static inline void sg_set_buf(struct scatterlist *sg, const void *buf,  in sg_set_buf()
168 static inline void __sg_chain(struct scatterlist *chain_sg,  in __sg_chain()
169 			      struct scatterlist *sgl)  in __sg_chain()
194 static inline void sg_chain(struct scatterlist *prv, unsigned int prv_nents,  in sg_chain()
195 			    struct scatterlist *sgl)  in sg_chain()
209 static inline void sg_mark_end(struct scatterlist *sg)  in sg_mark_end()
226 static inline void sg_unmark_end(struct scatterlist *sg)  in sg_unmark_end()
241 static inline dma_addr_t sg_phys(struct scatterlist *sg)  in sg_phys()
256 static inline void *sg_virt(struct scatterlist *sg)  in sg_virt()
267 static inline void sg_init_marker(struct scatterlist *sgl,  in sg_init_marker()
273 int sg_nents(struct scatterlist *sg);
274 int sg_nents_for_len(struct scatterlist *sg, u64 len);
275 struct scatterlist *sg_next(struct scatterlist *);
276 struct scatterlist *sg_last(struct scatterlist *s, unsigned int);
277 void sg_init_table(struct scatterlist *, unsigned int);
278 void sg_init_one(struct scatterlist *, const void *, unsigned int);
279 int sg_split(struct scatterlist *in, const int in_mapped_nents,
282 	     struct scatterlist **out, int *out_mapped_nents,
285 typedef struct scatterlist *(sg_alloc_fn)(unsigned int, gfp_t);
286 typedef void (sg_free_fn)(struct scatterlist *, unsigned int);
292 		     struct scatterlist *, unsigned int, gfp_t, sg_alloc_fn *);
294 struct scatterlist *__sg_alloc_table_from_pages(struct sg_table *sgt,
297 		struct scatterlist *prv, unsigned int left_pages,
304 struct scatterlist *sgl_alloc_order(unsigned long long length,
307 struct scatterlist *sgl_alloc(unsigned long long length, gfp_t gfp,
309 void sgl_free_n_order(struct scatterlist *sgl, int nents, int order);
310 void sgl_free_order(struct scatterlist *sgl, int order);
311 void sgl_free(struct scatterlist *sgl);
314 size_t sg_copy_buffer(struct scatterlist *sgl, unsigned int nents, void *buf,
317 size_t sg_copy_from_buffer(struct scatterlist *sgl, unsigned int nents,
319 size_t sg_copy_to_buffer(struct scatterlist *sgl, unsigned int nents,
322 size_t sg_pcopy_from_buffer(struct scatterlist *sgl, unsigned int nents,
324 size_t sg_pcopy_to_buffer(struct scatterlist *sgl, unsigned int nents,
326 size_t sg_zero_buffer(struct scatterlist *sgl, unsigned int nents,
333 #define SG_MAX_SINGLE_ALLOC		(PAGE_SIZE / sizeof(struct scatterlist))
358 			   struct scatterlist *first_chunk,
373 	struct scatterlist	*sg;		/* sg holding the page */
396 			  struct scatterlist *sglist, unsigned int nents,
511 void sg_miter_start(struct sg_mapping_iter *miter, struct scatterlist *sgl,