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io_uring/eventfd: abstract out ev_fd put helper

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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: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe 2024-09-21 01:59:47 -06:00
parent 42f7652d3e
commit 165126dc5e
1 changed files with 8 additions and 4 deletions
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12
io_uring/eventfd.c
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@ -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;
}