[PATCH 1/3] io_uring: store io_kiocb in wait->private

Jens Axboe
2020-02-10T20:56:55Z

Store the io_kiocb in the private field instead of the poll entry, this
is in preparation for allowing multiple waitqueues.

No functional changes in this patch.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
fs/io_uring.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 63beda9bafc5..3a0f7d190650 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -3624,8 +3624,8 @@ static void io_poll_trigger_evfd(struct io_wq_work **workptr)
static int io_poll_wake(struct wait_queue_entry *wait, unsigned mode, int sync,
void *key)
{
- struct io_poll_iocb *poll = wait->private;
- struct io_kiocb *req = container_of(poll, struct io_kiocb, poll);
+ struct io_kiocb *req = wait->private;
+ struct io_poll_iocb *poll = &req->poll;
struct io_ring_ctx *ctx = req->ctx;
__poll_t mask = key_to_poll(key);

@@ -3748,7 +3748,7 @@ static int io_poll_add(struct io_kiocb *req, struct io_kiocb **nxt)
/* initialized the list so that we can do list_empty checks */
INIT_LIST_HEAD(&poll->wait.entry);
init_waitqueue_func_entry(&poll->wait, io_poll_wake);
- poll->wait.private = poll;
+ poll->wait.private = req;

INIT_LIST_HEAD(&req->list);

--
2.25.0