diff options
Diffstat (limited to 'io_uring/rw.c')
| -rw-r--r-- | io_uring/rw.c | 35 |
1 files changed, 17 insertions, 18 deletions
diff --git a/io_uring/rw.c b/io_uring/rw.c index 6c7d2654770e..70b1407a4f20 100644 --- a/io_uring/rw.c +++ b/io_uring/rw.c @@ -447,26 +447,25 @@ static ssize_t loop_rw_iter(int ddir, struct io_rw *rw, struct iov_iter *iter) ppos = io_kiocb_ppos(kiocb); while (iov_iter_count(iter)) { - struct iovec iovec; + void __user *addr; + size_t len; ssize_t nr; if (iter_is_ubuf(iter)) { - iovec.iov_base = iter->ubuf + iter->iov_offset; - iovec.iov_len = iov_iter_count(iter); + addr = iter->ubuf + iter->iov_offset; + len = iov_iter_count(iter); } else if (!iov_iter_is_bvec(iter)) { - iovec = iov_iter_iovec(iter); + addr = iter_iov_addr(iter); + len = iter_iov_len(iter); } else { - iovec.iov_base = u64_to_user_ptr(rw->addr); - iovec.iov_len = rw->len; + addr = u64_to_user_ptr(rw->addr); + len = rw->len; } - if (ddir == READ) { - nr = file->f_op->read(file, iovec.iov_base, - iovec.iov_len, ppos); - } else { - nr = file->f_op->write(file, iovec.iov_base, - iovec.iov_len, ppos); - } + if (ddir == READ) + nr = file->f_op->read(file, addr, len, ppos); + else + nr = file->f_op->write(file, addr, len, ppos); if (nr < 0) { if (!ret) @@ -482,7 +481,7 @@ static ssize_t loop_rw_iter(int ddir, struct io_rw *rw, struct iov_iter *iter) if (!rw->len) break; } - if (nr != iovec.iov_len) + if (nr != len) break; } @@ -503,10 +502,10 @@ static void io_req_map_rw(struct io_kiocb *req, const struct iovec *iovec, if (!iovec) { unsigned iov_off = 0; - io->s.iter.iov = io->s.fast_iov; - if (iter->iov != fast_iov) { - iov_off = iter->iov - fast_iov; - io->s.iter.iov += iov_off; + io->s.iter.__iov = io->s.fast_iov; + if (iter->__iov != fast_iov) { + iov_off = iter_iov(iter) - fast_iov; + io->s.iter.__iov += iov_off; } if (io->s.fast_iov != fast_iov) memcpy(io->s.fast_iov + iov_off, fast_iov + iov_off, |