Lines Matching refs:iter
9 static inline void iomap_iter_reset_iomap(struct iomap_iter *iter) in iomap_iter_reset_iomap() argument
11 iter->status = 0; in iomap_iter_reset_iomap()
12 memset(&iter->iomap, 0, sizeof(iter->iomap)); in iomap_iter_reset_iomap()
13 memset(&iter->srcmap, 0, sizeof(iter->srcmap)); in iomap_iter_reset_iomap()
20 int iomap_iter_advance(struct iomap_iter *iter, u64 *count) in iomap_iter_advance() argument
22 if (WARN_ON_ONCE(*count > iomap_length(iter))) in iomap_iter_advance()
24 iter->pos += *count; in iomap_iter_advance()
25 iter->len -= *count; in iomap_iter_advance()
26 *count = iomap_length(iter); in iomap_iter_advance()
30 static inline void iomap_iter_done(struct iomap_iter *iter) in iomap_iter_done() argument
32 WARN_ON_ONCE(iter->iomap.offset > iter->pos); in iomap_iter_done()
33 WARN_ON_ONCE(iter->iomap.length == 0); in iomap_iter_done()
34 WARN_ON_ONCE(iter->iomap.offset + iter->iomap.length <= iter->pos); in iomap_iter_done()
35 WARN_ON_ONCE(iter->iomap.flags & IOMAP_F_STALE); in iomap_iter_done()
37 iter->iter_start_pos = iter->pos; in iomap_iter_done()
39 trace_iomap_iter_dstmap(iter->inode, &iter->iomap); in iomap_iter_done()
40 if (iter->srcmap.type != IOMAP_HOLE) in iomap_iter_done()
41 trace_iomap_iter_srcmap(iter->inode, &iter->srcmap); in iomap_iter_done()
59 int iomap_iter(struct iomap_iter *iter, const struct iomap_ops *ops) in iomap_iter() argument
61 bool stale = iter->iomap.flags & IOMAP_F_STALE; in iomap_iter()
66 trace_iomap_iter(iter, ops, _RET_IP_); in iomap_iter()
68 if (!iter->iomap.length) in iomap_iter()
75 advanced = iter->pos - iter->iter_start_pos; in iomap_iter()
76 olen = iter->len + advanced; in iomap_iter()
79 ret = ops->iomap_end(iter->inode, iter->iter_start_pos, in iomap_iter()
80 iomap_length_trim(iter, iter->iter_start_pos, in iomap_iter()
82 advanced, iter->flags, &iter->iomap); in iomap_iter()
88 if (WARN_ON_ONCE(iter->status > 0)) in iomap_iter()
89 iter->status = -EIO; in iomap_iter()
97 if (iter->status < 0) in iomap_iter()
98 ret = iter->status; in iomap_iter()
99 else if (iter->len == 0 || (!advanced && !stale)) in iomap_iter()
103 iomap_iter_reset_iomap(iter); in iomap_iter()
108 ret = ops->iomap_begin(iter->inode, iter->pos, iter->len, iter->flags, in iomap_iter()
109 &iter->iomap, &iter->srcmap); in iomap_iter()
112 iomap_iter_done(iter); in iomap_iter()