45 #define __bvec_iter_bvec(bvec, iter)	(&(bvec)[(iter).bi_idx])  argument
48 #define mp_bvec_iter_page(bvec, iter)				\  argument
49 	(__bvec_iter_bvec((bvec), (iter))->bv_page)
51 #define mp_bvec_iter_len(bvec, iter)				\  argument
53 	    __bvec_iter_bvec((bvec), (iter))->bv_len - (iter).bi_bvec_done)
55 #define mp_bvec_iter_offset(bvec, iter)				\  argument
56 	(__bvec_iter_bvec((bvec), (iter))->bv_offset + (iter).bi_bvec_done)
58 #define mp_bvec_iter_page_idx(bvec, iter)			\  argument
59 	(mp_bvec_iter_offset((bvec), (iter)) / PAGE_SIZE)
61 #define mp_bvec_iter_bvec(bvec, iter)				\  argument
63 	.bv_page	= mp_bvec_iter_page((bvec), (iter)),	\
64 	.bv_len		= mp_bvec_iter_len((bvec), (iter)),	\
65 	.bv_offset	= mp_bvec_iter_offset((bvec), (iter)),	\
69  #define bvec_iter_offset(bvec, iter)				\  argument
70 	(mp_bvec_iter_offset((bvec), (iter)) % PAGE_SIZE)
72 #define bvec_iter_len(bvec, iter)				\  argument
73 	min_t(unsigned, mp_bvec_iter_len((bvec), (iter)),		\
74 	      PAGE_SIZE - bvec_iter_offset((bvec), (iter)))
76 #define bvec_iter_page(bvec, iter)				\  argument
77 	(mp_bvec_iter_page((bvec), (iter)) +			\
78 	 mp_bvec_iter_page_idx((bvec), (iter)))
80 #define bvec_iter_bvec(bvec, iter)				\  argument
82 	.bv_page	= bvec_iter_page((bvec), (iter)),	\
83 	.bv_len		= bvec_iter_len((bvec), (iter)),	\
84 	.bv_offset	= bvec_iter_offset((bvec), (iter)),	\
136 static inline void bvec_advance(const struct bio_vec *bvec,  in bvec_advance()  argument
145 		bv->bv_page = bvec->bv_page + (bvec->bv_offset >> PAGE_SHIFT);  in bvec_advance()
146 		bv->bv_offset = bvec->bv_offset & ~PAGE_MASK;  in bvec_advance()
149 			   bvec->bv_len - iter_all->done);  in bvec_advance()
152 	if (iter_all->done == bvec->bv_len) {  in bvec_advance()
162 static inline void mp_bvec_last_segment(const struct bio_vec *bvec,  in mp_bvec_last_segment()  argument
165 	unsigned total = bvec->bv_offset + bvec->bv_len;  in mp_bvec_last_segment()
168 	seg->bv_page = bvec->bv_page + last_page;  in mp_bvec_last_segment()
171 	if (bvec->bv_offset >= last_page * PAGE_SIZE) {  in mp_bvec_last_segment()
172 		seg->bv_offset = bvec->bv_offset % PAGE_SIZE;  in mp_bvec_last_segment()
173 		seg->bv_len = bvec->bv_len;  in mp_bvec_last_segment()