From mboxrd@z Thu Jan 1 00:00:00 1970 From: Colin Cross Subject: [PATCH 05/10] epoll: use freezable blocking call Date: Mon, 29 Apr 2013 14:45:41 -0700 Message-ID: <1367271946-7239-6-git-send-email-ccross@android.com> References: <1367271946-7239-1-git-send-email-ccross@android.com> Cc: linux-kernel@vger.kernel.org, "Rafael J. Wysocki" , arve@android.com, Colin Cross , Alexander Viro , linux-fsdevel@vger.kernel.org To: linux-pm@vger.kernel.org Return-path: In-Reply-To: <1367271946-7239-1-git-send-email-ccross@android.com> Sender: linux-pm-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org Avoid waking up every thread sleeping in an epoll_wait call during suspend and resume by calling a freezable blocking call. Signed-off-by: Colin Cross --- fs/eventpoll.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/fs/eventpoll.c b/fs/eventpoll.c index 9fec183..65245e7 100644 --- a/fs/eventpoll.c +++ b/fs/eventpoll.c @@ -34,6 +34,7 @@ #include #include #include +#include #include #include #include @@ -1543,7 +1544,8 @@ fetch_events: } spin_unlock_irqrestore(&ep->lock, flags); - if (!schedule_hrtimeout_range(to, slack, HRTIMER_MODE_ABS)) + if (!freezable_schedule_hrtimeout_range(to, slack, + HRTIMER_MODE_ABS)) timed_out = 1; spin_lock_irqsave(&ep->lock, flags); -- 1.8.2.1