diff options
| author | Jens Axboe <axboe@kernel.dk> | 2024-01-28 20:08:24 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2024-02-08 13:27:06 -0700 |
| commit | 95041b93e90a06bb613ec4bef9cd4d61570f68e4 (patch) | |
| tree | a40378fc60c611affd5f48bfe2efa56c9c00e157 /io_uring/kbuf.c | |
| parent | 521223d7c229f83915619f888c99e952f24dc39f (diff) | |
| download | linux-95041b93e90a06bb613ec4bef9cd4d61570f68e4.tar.gz | |
io_uring: add io_file_can_poll() helper
This adds a flag to avoid dipping dereferencing file and then f_op to
figure out if the file has a poll handler defined or not. We generally
call this at least twice for networked workloads, and if using ring
provided buffers, we do it on every buffer selection. Particularly the
latter is troublesome, as it's otherwise a very fast operation.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring/kbuf.c')
| -rw-r--r-- | io_uring/kbuf.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/io_uring/kbuf.c b/io_uring/kbuf.c index 18df5a9d2f5e7..71880615bb788 100644 --- a/io_uring/kbuf.c +++ b/io_uring/kbuf.c @@ -180,7 +180,7 @@ static void __user *io_ring_buffer_select(struct io_kiocb *req, size_t *len, req->buf_list = bl; req->buf_index = buf->bid; - if (issue_flags & IO_URING_F_UNLOCKED || !file_can_poll(req->file)) { + if (issue_flags & IO_URING_F_UNLOCKED || !io_file_can_poll(req)) { /* * If we came in unlocked, we have no choice but to consume the * buffer here, otherwise nothing ensures that the buffer won't |