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Message-Id: <1393234267-22937-2-git-send-email-jack@suse.cz>
Date:	Mon, 24 Feb 2014 10:31:05 +0100
From:	Jan Kara <jack@...e.cz>
To:	linux-fsdevel@...r.kernel.org
Cc:	poma <pomidorabelisima@...il.com>,
	Richard Weinberger <richard.weinberger@...il.com>,
	LKML <linux-kernel@...r.kernel.org>, eparis@...isplace.org,
	Jan Kara <jack@...e.cz>
Subject: [PATCH 1/3] fsnotify: Fix detection whether overflow event is queued

Currently we didn't initialize event's list head when we removed it from
the event list. Thus a detection whether overflow event is already
queued wasn't working. Fix it by always initializing the list head when
deleting event from a list.

Signed-off-by: Jan Kara <jack@...e.cz>
---
 fs/notify/notification.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/fs/notify/notification.c b/fs/notify/notification.c
index 18b3c4427dca..6bec2f4918f9 100644
--- a/fs/notify/notification.c
+++ b/fs/notify/notification.c
@@ -132,7 +132,11 @@ struct fsnotify_event *fsnotify_remove_notify_event(struct fsnotify_group *group
 
 	event = list_first_entry(&group->notification_list,
 				 struct fsnotify_event, list);
-	list_del(&event->list);
+	/*
+	 * We need to init list head for the case of overflow event so that
+	 * check in fsnotify_add_notify_events() works
+	 */
+	list_del_init(&event->list);
 	group->q_len--;
 
 	return event;
-- 
1.8.1.4

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