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| author |   Jens Axboe <axboe@kernel.dk> | 2019-12-09 20:01:01 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2019-12-10 16:33:23 -0700 |
| commit | 4a0a7a187453e65bdd24b9ede045b4c36b958868 (patch) | |
| tree | afe7662e3f7468881305785921e4cfc4cfc5201a /fs | |
| parent | io_uring: don't dynamically allocate poll data (diff) | |
| download | linux-dev-4a0a7a187453e65bdd24b9ede045b4c36b958868.tar.xz linux-dev-4a0a7a187453e65bdd24b9ede045b4c36b958868.zip | |
io_uring: run next sqe inline if possible
One major use case of linked commands is the ability to run the next
link inline, if at all possible. This is done correctly for async
offload, but somewhere along the line we lost the ability to do so when
we were able to complete a request without having to punt it. Ensure
that we do so correctly.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/io_uring.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/fs/io_uring.c b/fs/io_uring.c index 89a2c8b4f8fb..3dae005bfb56 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -3224,13 +3224,14 @@ static struct io_kiocb *io_prep_linked_timeout(struct io_kiocb *req) static void __io_queue_sqe(struct io_kiocb *req) { - struct io_kiocb *linked_timeout = io_prep_linked_timeout(req); + struct io_kiocb *linked_timeout; struct io_kiocb *nxt = NULL; int ret; +again: + linked_timeout = io_prep_linked_timeout(req); + ret = io_issue_sqe(req, &nxt, true); - if (nxt) - io_queue_async_work(nxt); /* * We async punt it if the file wasn't marked NOWAIT, or if the file @@ -3249,7 +3250,7 @@ static void __io_queue_sqe(struct io_kiocb *req) * submit reference when the iocb is actually submitted. */ io_queue_async_work(req); - return; + goto done_req; } err: @@ -3269,6 +3270,12 @@ err: req_set_fail_links(req); io_put_req(req); } +done_req: + if (nxt) { + req = nxt; + nxt = NULL; + goto again; + } } static void io_queue_sqe(struct io_kiocb *req) |