Lines Matching defs:walk
29 static inline unsigned int scatterwalk_pagelen(struct scatter_walk *walk)
31 unsigned int len = walk->sg->offset + walk->sg->length - walk->offset;
32 unsigned int len_this_page = offset_in_page(~walk->offset) + 1;
36 static inline unsigned int scatterwalk_clamp(struct scatter_walk *walk,
39 unsigned int len_this_page = scatterwalk_pagelen(walk);
43 static inline void scatterwalk_advance(struct scatter_walk *walk,
46 walk->offset += nbytes;
49 static inline struct page *scatterwalk_page(struct scatter_walk *walk)
51 return sg_page(walk->sg) + (walk->offset >> PAGE_SHIFT);
59 static inline void scatterwalk_start(struct scatter_walk *walk,
62 walk->sg = sg;
63 walk->offset = sg->offset;
66 static inline void *scatterwalk_map(struct scatter_walk *walk)
68 return kmap_local_page(scatterwalk_page(walk)) +
69 offset_in_page(walk->offset);
72 static inline void scatterwalk_pagedone(struct scatter_walk *walk, int out,
78 page = sg_page(walk->sg) + ((walk->offset - 1) >> PAGE_SHIFT);
82 if (more && walk->offset >= walk->sg->offset + walk->sg->length)
83 scatterwalk_start(walk, sg_next(walk->sg));
86 static inline void scatterwalk_done(struct scatter_walk *walk, int out,
89 if (!more || walk->offset >= walk->sg->offset + walk->sg->length ||
90 !(walk->offset & (PAGE_SIZE - 1)))
91 scatterwalk_pagedone(walk, out, more);
94 void scatterwalk_copychunks(void *buf, struct scatter_walk *walk,