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Message-Id: <1354178770-6028-3-git-send-email-laijs@cn.fujitsu.com> Date: Thu, 29 Nov 2012 16:46:03 +0800 From: Lai Jiangshan <laijs@...fujitsu.com> To: linux-kernel@...r.kernel.org, "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com> Cc: Lai Jiangshan <laijs@...fujitsu.com> Subject: [PATCH 2/8] srcu: add might_sleep() annotation to synchronize_srcu() synchronize_srcu() can sleep but it will not sleep if the fast path succeeds. This annotation will helps us to catch the problem early if it is called in a wrong contex which can't sleep. Signed-off-by: Lai Jiangshan <laijs@...fujitsu.com> --- kernel/srcu.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/kernel/srcu.c b/kernel/srcu.c index b2e4f36..48d0edb 100644 --- a/kernel/srcu.c +++ b/kernel/srcu.c @@ -417,6 +417,7 @@ static void __synchronize_srcu(struct srcu_struct *sp, int trycount) !lock_is_held(&rcu_sched_lock_map), "Illegal synchronize_srcu() in same-type SRCU (or RCU) read-side critical section"); + might_sleep(); init_completion(&rcu.completion); head->next = NULL; -- 1.7.4.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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