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Subject[PATCH 4/6] fs/epoll: robustify ep->mtx held checks
Date
Insted of just commenting how important it is, lets make
it more robust and add a lockdep_assert_held() call.

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
---
fs/eventpoll.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/fs/eventpoll.c b/fs/eventpoll.c
index 347da3f4f5d3..6a0c2591e57e 100644
--- a/fs/eventpoll.c
+++ b/fs/eventpoll.c
@@ -1637,6 +1637,8 @@ static __poll_t ep_send_events_proc(struct eventpoll *ep, struct list_head *head
* Items cannot vanish during the loop because ep_scan_ready_list() is
* holding "mtx" during this call.
*/
+ lockdep_assert_held(&ep->mtx);
+
list_for_each_entry_safe(epi, tmp, head, rdllink) {
if (esed->res >= esed->maxevents)
break;
--
2.16.4
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