From 0611a640e60a0473883328746f3c53934cd4dc3c Mon Sep 17 00:00:00 2001 From: Dmitry Antipov Date: Wed, 21 Feb 2024 14:22:05 +0300 Subject: eventpoll: prefer kfree_rcu() in __ep_remove() In '__ep_remove()', prefer 'kfree_rcu()' over 'call_rcu()' with dummy 'epi_rcu_free()' callback. This follows commit d0089603fa7a ("fs: prefer kfree_rcu() in fasync_remove_entry()") and should not be backported to stable as well. Signed-off-by: Dmitry Antipov Link: https://lore.kernel.org/r/20240221112205.48389-2-dmantipov@yandex.ru Signed-off-by: Christian Brauner --- fs/eventpoll.c | 8 +------- 1 file changed, 1 insertion(+), 7 deletions(-) diff --git a/fs/eventpoll.c b/fs/eventpoll.c index 786e023a48b2..39ac6fdf8bca 100644 --- a/fs/eventpoll.c +++ b/fs/eventpoll.c @@ -678,12 +678,6 @@ static void ep_done_scan(struct eventpoll *ep, write_unlock_irq(&ep->lock); } -static void epi_rcu_free(struct rcu_head *head) -{ - struct epitem *epi = container_of(head, struct epitem, rcu); - kmem_cache_free(epi_cache, epi); -} - static void ep_get(struct eventpoll *ep) { refcount_inc(&ep->refcount); @@ -767,7 +761,7 @@ static bool __ep_remove(struct eventpoll *ep, struct epitem *epi, bool force) * ep->mtx. The rcu read side, reverse_path_check_proc(), does not make * use of the rbn field. */ - call_rcu(&epi->rcu, epi_rcu_free); + kfree_rcu(epi, rcu); percpu_counter_dec(&ep->user->epoll_watches); return ep_refcount_dec_and_test(ep); -- cgit