diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-04-09 15:06:52 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-04-09 15:06:52 -0700 |
| commit | 3b9784350f990d8fe2ca08978dc25cd5180d5c21 (patch) | |
| tree | 22a38e0417e8efa1f0ef40ee814f3f6c74035328 | |
| parent | a2521822bdfd73bd40d7cd81dfa89cc922b1cff4 (diff) | |
| parent | c60eb049f4a19ddddcd3ee97a9c79ab8066a6a03 (diff) | |
| download | misc-3b9784350f990d8fe2ca08978dc25cd5180d5c21.tar.gz | |
Merge tag 'io_uring-5.12-2021-04-09' of git://git.kernel.dk/linux-block
Pull io_uring fixes from Jens Axboe:
"Two minor fixups for the reissue logic, and one for making sure that
unbounded work is canceled on io-wq exit"
* tag 'io_uring-5.12-2021-04-09' of git://git.kernel.dk/linux-block:
io-wq: cancel unbounded works on io-wq destroy
io_uring: fix rw req completion
io_uring: clear F_REISSUE right after getting it
| -rw-r--r-- | fs/io-wq.c | 4 | ||||
| -rw-r--r-- | fs/io_uring.c | 19 |
2 files changed, 21 insertions, 2 deletions
diff --git a/fs/io-wq.c b/fs/io-wq.c index 433c4d3c3c1c8c..4eba531bea5a92 100644 --- a/fs/io-wq.c +++ b/fs/io-wq.c @@ -415,6 +415,7 @@ static void io_worker_handle_work(struct io_worker *worker) { struct io_wqe *wqe = worker->wqe; struct io_wq *wq = wqe->wq; + bool do_kill = test_bit(IO_WQ_BIT_EXIT, &wq->state); do { struct io_wq_work *work; @@ -444,6 +445,9 @@ get_next: unsigned int hash = io_get_work_hash(work); next_hashed = wq_next_work(work); + + if (unlikely(do_kill) && (work->flags & IO_WQ_WORK_UNBOUND)) + work->flags |= IO_WQ_WORK_CANCEL; wq->do_work(work); io_assign_current_work(worker, NULL); diff --git a/fs/io_uring.c b/fs/io_uring.c index 65a17d560a7327..bd14327c8e7e51 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -2762,6 +2762,7 @@ static void kiocb_done(struct kiocb *kiocb, ssize_t ret, { struct io_kiocb *req = container_of(kiocb, struct io_kiocb, rw.kiocb); struct io_async_rw *io = req->async_data; + bool check_reissue = kiocb->ki_complete == io_complete_rw; /* add previously done IO, if any */ if (io && io->bytes_done > 0) { @@ -2777,6 +2778,18 @@ static void kiocb_done(struct kiocb *kiocb, ssize_t ret, __io_complete_rw(req, ret, 0, issue_flags); else io_rw_done(kiocb, ret); + + if (check_reissue && req->flags & REQ_F_REISSUE) { + req->flags &= ~REQ_F_REISSUE; + if (!io_rw_reissue(req)) { + int cflags = 0; + + req_set_fail_links(req); + if (req->flags & REQ_F_BUFFER_SELECTED) + cflags = io_put_rw_kbuf(req); + __io_req_complete(req, issue_flags, ret, cflags); + } + } } static int io_import_fixed(struct io_kiocb *req, int rw, struct iov_iter *iter) @@ -3294,6 +3307,7 @@ static int io_read(struct io_kiocb *req, unsigned int issue_flags) ret = io_iter_do_read(req, iter); if (ret == -EAGAIN || (req->flags & REQ_F_REISSUE)) { + req->flags &= ~REQ_F_REISSUE; /* IOPOLL retry should happen for io-wq threads */ if (!force_nonblock && !(req->ctx->flags & IORING_SETUP_IOPOLL)) goto done; @@ -3417,8 +3431,10 @@ static int io_write(struct io_kiocb *req, unsigned int issue_flags) else ret2 = -EINVAL; - if (req->flags & REQ_F_REISSUE) + if (req->flags & REQ_F_REISSUE) { + req->flags &= ~REQ_F_REISSUE; ret2 = -EAGAIN; + } /* * Raw bdev writes will return -EOPNOTSUPP for IOCB_NOWAIT. Just @@ -6173,7 +6189,6 @@ static void io_wq_submit_work(struct io_wq_work *work) ret = -ECANCELED; if (!ret) { - req->flags &= ~REQ_F_REISSUE; do { ret = io_issue_sqe(req, 0); /* |