autoremove_wake_function uses list_del_init_careful, so should epoll's more aggressive variant. It only doesn't because it was copied from an older wait.c rather than the most recent.
Fixes: a16ceb139610 ("epoll: autoremove wakers even more aggressively") Signed-off-by: Ben Segall bsegall@google.com Cc: stable@vger.kernel.org --- fs/eventpoll.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/eventpoll.c b/fs/eventpoll.c index 52954d4637b5..081df056398a 100644 --- a/fs/eventpoll.c +++ b/fs/eventpoll.c @@ -1756,11 +1756,11 @@ static struct timespec64 *ep_timeout_to_timespec(struct timespec64 *to, long ms) static int ep_autoremove_wake_function(struct wait_queue_entry *wq_entry, unsigned int mode, int sync, void *key) { int ret = default_wake_function(wq_entry, mode, sync, key);
- list_del_init(&wq_entry->entry); + list_del_init_careful(&wq_entry->entry); return ret; }
/** * ep_poll - Retrieves ready events, and delivers them to the caller-supplied
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