Commit b2cb805f authored by Jens Axboe's avatar Jens Axboe
Browse files

io_uring: abstract out a io_poll_find_helper() 



We'll need this helper for another purpose, for now just abstract it
out and have io_poll_cancel() use it for lookups.

Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 5082620f

fs/io_uring.c

+16 −5
Original line number Diff line number Diff line
@@ -5286,7 +5286,7 @@ static bool io_poll_remove_all(struct io_ring_ctx *ctx, struct task_struct *tsk, 
	return posted != 0;

}



static int io_poll_cancel(struct io_ring_ctx *ctx, __u64 sqe_addr)

static struct io_kiocb *io_poll_find(struct io_ring_ctx *ctx, __u64 sqe_addr)

{

	struct hlist_head *list;

	struct io_kiocb *req;
@@ -5295,12 +5295,23 @@ static int io_poll_cancel(struct io_ring_ctx *ctx, __u64 sqe_addr) 
	hlist_for_each_entry(req, list, hash_node) {

		if (sqe_addr != req->user_data)

			continue;

		if (io_poll_remove_one(req))

			return 0;

		return -EALREADY;

		return req;

	}



	return NULL;

}



static int io_poll_cancel(struct io_ring_ctx *ctx, __u64 sqe_addr)

{

	struct io_kiocb *req;



	req = io_poll_find(ctx, sqe_addr);

	if (!req)

		return -ENOENT;

	if (io_poll_remove_one(req))

		return 0;



	return -EALREADY;

}



static int io_poll_remove_prep(struct io_kiocb *req,