diff options
Diffstat (limited to 'io_uring/rw.c')
| -rw-r--r-- | io_uring/rw.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/io_uring/rw.c b/io_uring/rw.c index c004d21e2f12..f023ff49c688 100644 --- a/io_uring/rw.c +++ b/io_uring/rw.c @@ -467,8 +467,7 @@ static void io_req_io_end(struct io_kiocb *req) static bool __io_complete_rw_common(struct io_kiocb *req, long res) { if (unlikely(res != req->cqe.res)) { - if ((res == -EAGAIN || res == -EOPNOTSUPP) && - io_rw_should_reissue(req)) { + if (res == -EAGAIN && io_rw_should_reissue(req)) { /* * Reissue will start accounting again, finish the * current cycle. @@ -511,7 +510,7 @@ void io_req_rw_complete(struct io_kiocb *req, struct io_tw_state *ts) io_req_io_end(req); if (req->flags & (REQ_F_BUFFER_SELECTED|REQ_F_BUFFER_RING)) - req->cqe.flags |= io_put_kbuf(req, 0); + req->cqe.flags |= io_put_kbuf(req, req->cqe.res, 0); io_req_rw_cleanup(req, 0); io_req_task_complete(req, ts); @@ -593,7 +592,7 @@ static int kiocb_done(struct io_kiocb *req, ssize_t ret, */ io_req_io_end(req); io_req_set_res(req, final_ret, - io_put_kbuf(req, issue_flags)); + io_put_kbuf(req, ret, issue_flags)); io_req_rw_cleanup(req, issue_flags); return IOU_OK; } @@ -855,6 +854,14 @@ static int __io_read(struct io_kiocb *req, unsigned int issue_flags) ret = io_iter_do_read(rw, &io->iter); + /* + * Some file systems like to return -EOPNOTSUPP for an IOCB_NOWAIT + * issue, even though they should be returning -EAGAIN. To be safe, + * retry from blocking context for either. + */ + if (ret == -EOPNOTSUPP && force_nonblock) + ret = -EAGAIN; + if (ret == -EAGAIN || (req->flags & REQ_F_REISSUE)) { req->flags &= ~REQ_F_REISSUE; /* If we can poll, just do that. */ @@ -975,7 +982,7 @@ int io_read_mshot(struct io_kiocb *req, unsigned int issue_flags) * Put our buffer and post a CQE. If we fail to post a CQE, then * jump to the termination path. This request is then done. */ - cflags = io_put_kbuf(req, issue_flags); + cflags = io_put_kbuf(req, ret, issue_flags); rw->len = 0; /* similarly to above, reset len to 0 */ if (io_req_post_cqe(req, ret, cflags | IORING_CQE_F_MORE)) { @@ -1167,7 +1174,7 @@ int io_do_iopoll(struct io_ring_ctx *ctx, bool force_nonspin) if (!smp_load_acquire(&req->iopoll_completed)) break; nr_events++; - req->cqe.flags = io_put_kbuf(req, 0); + req->cqe.flags = io_put_kbuf(req, req->cqe.res, 0); if (req->opcode != IORING_OP_URING_CMD) io_req_rw_cleanup(req, 0); } |