Commit 165126dc authored by Jens Axboe's avatar Jens Axboe
Browse files

io_uring/eventfd: abstract out ev_fd put helper 

We call this in two spot, have a helper for it. In preparation for
extending this part.

Link: https://lore.kernel.org/r/20240921080307.185186-2-axboe@kernel.dk


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 42f7652d

io_uring/eventfd.c

+8 −4
Original line number Diff line number Diff line
@@ -41,6 +41,12 @@ static void io_eventfd_do_signal(struct rcu_head *rcu) 
		io_eventfd_free(rcu);

}



static void io_eventfd_put(struct io_ev_fd *ev_fd)

{

	if (refcount_dec_and_test(&ev_fd->refs))

		call_rcu(&ev_fd->rcu, io_eventfd_free);

}



void io_eventfd_signal(struct io_ring_ctx *ctx)

{

	struct io_ev_fd *ev_fd = NULL;
@@ -77,8 +83,7 @@ void io_eventfd_signal(struct io_ring_ctx *ctx) 
		}

	}

out:

	if (refcount_dec_and_test(&ev_fd->refs))

		call_rcu(&ev_fd->rcu, io_eventfd_free);

	io_eventfd_put(ev_fd);

}



void io_eventfd_flush_signal(struct io_ring_ctx *ctx)
@@ -152,8 +157,7 @@ int io_eventfd_unregister(struct io_ring_ctx *ctx) 
	if (ev_fd) {

		ctx->has_evfd = false;

		rcu_assign_pointer(ctx->io_ev_fd, NULL);

		if (refcount_dec_and_test(&ev_fd->refs))

			call_rcu(&ev_fd->rcu, io_eventfd_free);

		io_eventfd_put(ev_fd);

		return 0;

	}