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-rw-r--r--include/linux/bvec.h13
1 files changed, 4 insertions, 9 deletions
diff --git a/include/linux/bvec.h b/include/linux/bvec.h
index 307bbda62b7b..44b0f4684190 100644
--- a/include/linux/bvec.h
+++ b/include/linux/bvec.h
@@ -51,11 +51,6 @@ struct bvec_iter_all {
51 unsigned done; 51 unsigned done;
52}; 52};
53 53
54static inline struct page *bvec_nth_page(struct page *page, int idx)
55{
56 return idx == 0 ? page : nth_page(page, idx);
57}
58
59/* 54/*
60 * various member access, note that bio_data should of course not be used 55 * various member access, note that bio_data should of course not be used
61 * on highmem page vectors 56 * on highmem page vectors
@@ -92,8 +87,8 @@ static inline struct page *bvec_nth_page(struct page *page, int idx)
92 PAGE_SIZE - bvec_iter_offset((bvec), (iter))) 87 PAGE_SIZE - bvec_iter_offset((bvec), (iter)))
93 88
94#define bvec_iter_page(bvec, iter) \ 89#define bvec_iter_page(bvec, iter) \
95 bvec_nth_page(mp_bvec_iter_page((bvec), (iter)), \ 90 (mp_bvec_iter_page((bvec), (iter)) + \
96 mp_bvec_iter_page_idx((bvec), (iter))) 91 mp_bvec_iter_page_idx((bvec), (iter)))
97 92
98#define bvec_iter_bvec(bvec, iter) \ 93#define bvec_iter_bvec(bvec, iter) \
99((struct bio_vec) { \ 94((struct bio_vec) { \
@@ -157,7 +152,7 @@ static inline void mp_bvec_next_segment(const struct bio_vec *bvec,
157 struct bio_vec *bv = &iter_all->bv; 152 struct bio_vec *bv = &iter_all->bv;
158 153
159 if (bv->bv_page) { 154 if (bv->bv_page) {
160 bv->bv_page = nth_page(bv->bv_page, 1); 155 bv->bv_page++;
161 bv->bv_offset = 0; 156 bv->bv_offset = 0;
162 } else { 157 } else {
163 bv->bv_page = bvec->bv_page; 158 bv->bv_page = bvec->bv_page;
@@ -177,7 +172,7 @@ static inline void mp_bvec_last_segment(const struct bio_vec *bvec,
177 unsigned total = bvec->bv_offset + bvec->bv_len; 172 unsigned total = bvec->bv_offset + bvec->bv_len;
178 unsigned last_page = (total - 1) / PAGE_SIZE; 173 unsigned last_page = (total - 1) / PAGE_SIZE;
179 174
180 seg->bv_page = bvec_nth_page(bvec->bv_page, last_page); 175 seg->bv_page = bvec->bv_page + last_page;
181 176
182 /* the whole segment is inside the last page */ 177 /* the whole segment is inside the last page */
183 if (bvec->bv_offset >= last_page * PAGE_SIZE) { 178 if (bvec->bv_offset >= last_page * PAGE_SIZE) {