8 #define iterate_iovec(i, n, __v, __p, skip, STEP) {	\  argument
11 	__p = i->iov;					\
12 	__v.iov_len = min(n, __p->iov_len - skip);	\
14 		__v.iov_base = __p->iov_base + skip;	\
23 		__p++;					\
24 		__v.iov_len = min(n, __p->iov_len);	\
27 		__v.iov_base = __p->iov_base;		\
36 #define iterate_kvec(i, n, __v, __p, skip, STEP) {	\  argument
38 	__p = i->kvec;					\
39 	__v.iov_len = min(n, __p->iov_len - skip);	\
41 		__v.iov_base = __p->iov_base + skip;	\
47 		__p++;					\
48 		__v.iov_len = min(n, __p->iov_len);	\
51 		__v.iov_base = __p->iov_base;		\
59 #define iterate_bvec(i, n, __v, __p, skip, STEP) {	\  argument
61 	__p = i->bvec;					\
62 	__v.bv_len = min_t(size_t, n, __p->bv_len - skip);	\
64 		__v.bv_page = __p->bv_page;		\
65 		__v.bv_offset = __p->bv_offset + skip; 	\
71 		__p++;					\
72 		__v.bv_len = min_t(size_t, n, __p->bv_len);	\
75 		__v.bv_page = __p->bv_page;		\
76 		__v.bv_offset = __p->bv_offset;		\