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| Rev 4568 | Rev 5056 | ||
|---|---|---|---|
| Line 99... | Line 99... | ||
| 99 | BUG_ON(sg_is_chain(sg)); |
99 | BUG_ON(sg_is_chain(sg)); |
| 100 | #endif |
100 | #endif |
| 101 | return (struct page *)((sg)->page_link & ~0x3); |
101 | return (struct page *)((sg)->page_link & ~0x3); |
| 102 | } |
102 | } |
| Line 103... | Line -... | ||
| 103 | - | ||
| 104 | /** |
- | |
| 105 | * sg_set_buf - Set sg entry to point at given data |
- | |
| 106 | * @sg: SG entry |
- | |
| 107 | * @buf: Data |
- | |
| 108 | * @buflen: Data length |
- | |
| 109 | * |
- | |
| 110 | **/ |
- | |
| 111 | //static inline void sg_set_buf(struct scatterlist *sg, const void *buf, |
- | |
| 112 | // unsigned int buflen) |
- | |
| 113 | //{ |
- | |
| 114 | // sg_set_page(sg, virt_to_page(buf), buflen, offset_in_page(buf)); |
- | |
| 115 | //} |
- | |
| 116 | 103 | ||
| 117 | /* |
104 | /* |
| 118 | * Loop over each sg element, following the pointer to a new list if necessary |
105 | * Loop over each sg element, following the pointer to a new list if necessary |
| 119 | */ |
106 | */ |
| 120 | #define for_each_sg(sglist, sg, nr, __i) \ |
107 | #define for_each_sg(sglist, sg, nr, __i) \ |
| Line 224... | Line 211... | ||
| 224 | void sg_init_one(struct scatterlist *, const void *, unsigned int); |
211 | void sg_init_one(struct scatterlist *, const void *, unsigned int); |
| Line 225... | Line 212... | ||
| 225 | 212 | ||
| 226 | typedef struct scatterlist *(sg_alloc_fn)(unsigned int, gfp_t); |
213 | typedef struct scatterlist *(sg_alloc_fn)(unsigned int, gfp_t); |
| Line 227... | Line 214... | ||
| 227 | typedef void (sg_free_fn)(struct scatterlist *, unsigned int); |
214 | typedef void (sg_free_fn)(struct scatterlist *, unsigned int); |
| 228 | 215 | ||
| 229 | void __sg_free_table(struct sg_table *, unsigned int, sg_free_fn *); |
216 | void __sg_free_table(struct sg_table *, unsigned int, bool, sg_free_fn *); |
| 230 | void sg_free_table(struct sg_table *); |
217 | void sg_free_table(struct sg_table *); |
| 231 | int __sg_alloc_table(struct sg_table *, unsigned int, unsigned int, gfp_t, |
218 | int __sg_alloc_table(struct sg_table *, unsigned int, unsigned int, |
| 232 | sg_alloc_fn *); |
219 | struct scatterlist *, gfp_t, sg_alloc_fn *); |
| 233 | int sg_alloc_table(struct sg_table *, unsigned int, gfp_t); |
220 | int sg_alloc_table(struct sg_table *, unsigned int, gfp_t); |
| 234 | int sg_alloc_table_from_pages(struct sg_table *sgt, |
221 | int sg_alloc_table_from_pages(struct sg_table *sgt, |
| 235 | struct page **pages, unsigned int n_pages, |
222 | struct page **pages, unsigned int n_pages, |
| Line 239... | Line 226... | ||
| 239 | size_t sg_copy_from_buffer(struct scatterlist *sgl, unsigned int nents, |
226 | size_t sg_copy_from_buffer(struct scatterlist *sgl, unsigned int nents, |
| 240 | void *buf, size_t buflen); |
227 | void *buf, size_t buflen); |
| 241 | size_t sg_copy_to_buffer(struct scatterlist *sgl, unsigned int nents, |
228 | size_t sg_copy_to_buffer(struct scatterlist *sgl, unsigned int nents, |
| 242 | void *buf, size_t buflen); |
229 | void *buf, size_t buflen); |
| Line -... | Line 230... | ||
| - | 230 | ||
| - | 231 | size_t sg_pcopy_from_buffer(struct scatterlist *sgl, unsigned int nents, |
|
| - | 232 | void *buf, size_t buflen, off_t skip); |
|
| - | 233 | size_t sg_pcopy_to_buffer(struct scatterlist *sgl, unsigned int nents, |
|
| - | 234 | void *buf, size_t buflen, off_t skip); |
|
| 243 | 235 | ||
| 244 | /* |
236 | /* |
| 245 | * Maximum number of entries that will be allocated in one piece, if |
237 | * Maximum number of entries that will be allocated in one piece, if |
| 246 | * a list larger than this is required then chaining will be utilized. |
238 | * a list larger than this is required then chaining will be utilized. |
| 247 | */ |
239 | */ |