diff options
| author | Jens Axboe <axboe@kernel.dk> | 2024-01-29 06:11:55 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2024-02-08 23:27:06 +0300 |
| commit | 521223d7c229f83915619f888c99e952f24dc39f (patch) | |
| tree | b19885749949ac462562ebc474b8964edc85331f /io_uring/io_uring.c | |
| parent | 4bcb982cce74e18155fba0d97394ca9634e0d8f0 (diff) | |
| download | linux-521223d7c229f83915619f888c99e952f24dc39f.tar.xz | |
io_uring/cancel: don't default to setting req->work.cancel_seq
Just leave it unset by default, avoiding dipping into the last
cacheline (which is otherwise untouched) for the fast path of using
poll to drive networked traffic. Add a flag that tells us if the
sequence is valid or not, and then we can defer actually assigning
the flag and sequence until someone runs cancelations.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring/io_uring.c')
| -rw-r--r-- | io_uring/io_uring.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c index b8ca907b77eb..fd552b260eef 100644 --- a/io_uring/io_uring.c +++ b/io_uring/io_uring.c @@ -463,7 +463,6 @@ static void io_prep_async_work(struct io_kiocb *req) req->work.list.next = NULL; req->work.flags = 0; - req->work.cancel_seq = atomic_read(&ctx->cancel_seq); if (req->flags & REQ_F_FORCE_ASYNC) req->work.flags |= IO_WQ_WORK_CONCURRENT; |