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From: Steffen Klassert <steffen.klassert@secunet.com>
To: Andrew Morton <akpm@linux-foundation.org>,
	Herbert Xu <herbert@gondor.hengli.com.au>
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH 3/8] padata: Remove superfluous might_sleep
Date: Thu, 29 Apr 2010 14:40:53 +0200	[thread overview]
Message-ID: <20100429124053.GG5275@secunet.com> (raw)
In-Reply-To: <20100429123636.GD5275@secunet.com>

might_sleep() was placed before mutex_lock() in some places.
We remove them because mutex_lock() does might_sleep() too.

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
---
 kernel/padata.c |   10 ----------
 1 files changed, 0 insertions(+), 10 deletions(-)

diff --git a/kernel/padata.c b/kernel/padata.c
index 1209a17..5fa6ba6 100644
--- a/kernel/padata.c
+++ b/kernel/padata.c
@@ -443,8 +443,6 @@ int padata_set_cpumask(struct padata_instance *pinst,
 	struct parallel_data *pd;
 	int err = 0;
 
-	might_sleep();
-
 	mutex_lock(&pinst->lock);
 
 	pd = padata_alloc_pd(pinst, cpumask);
@@ -489,8 +487,6 @@ int padata_add_cpu(struct padata_instance *pinst, int cpu)
 {
 	int err;
 
-	might_sleep();
-
 	mutex_lock(&pinst->lock);
 
 	cpumask_set_cpu(cpu, pinst->cpumask);
@@ -527,8 +523,6 @@ int padata_remove_cpu(struct padata_instance *pinst, int cpu)
 {
 	int err;
 
-	might_sleep();
-
 	mutex_lock(&pinst->lock);
 
 	cpumask_clear_cpu(cpu, pinst->cpumask);
@@ -547,8 +541,6 @@ EXPORT_SYMBOL(padata_remove_cpu);
  */
 void padata_start(struct padata_instance *pinst)
 {
-	might_sleep();
-
 	mutex_lock(&pinst->lock);
 	pinst->flags |= PADATA_INIT;
 	mutex_unlock(&pinst->lock);
@@ -562,8 +554,6 @@ EXPORT_SYMBOL(padata_start);
  */
 void padata_stop(struct padata_instance *pinst)
 {
-	might_sleep();
-
 	mutex_lock(&pinst->lock);
 	pinst->flags &= ~PADATA_INIT;
 	mutex_unlock(&pinst->lock);
-- 
1.5.6.5


  parent reply	other threads:[~2010-04-30 18:06 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-04-29 12:36 [PATCH 0/8] padata: fixes/cleanups Steffen Klassert
2010-04-29 12:37 ` [PATCH 1/8] padata: Dont scale the parallel objects with the cpus Steffen Klassert
2010-04-29 12:40 ` [PATCH 2/8] padata: cpu hotplug code should depend on CONFIG_HOTPLUG_CPU Steffen Klassert
2010-04-29 12:40 ` Steffen Klassert [this message]
2010-04-29 12:41 ` [PATCH 4/8] padata: Initialize the padata queues only for the used cpus Steffen Klassert
2010-04-29 12:42 ` [PATCH 5/8] padata: Use get_online_cpus/put_online_cpus Steffen Klassert
2010-04-29 12:43 ` [PATCH 6/8] padata: Use a timer to handle the reorder queues Steffen Klassert
2010-04-29 23:06   ` Andrew Morton
2010-04-30 11:20     ` Steffen Klassert
2010-05-03  3:38       ` Herbert Xu
2010-04-29 12:44 ` [PATCH 7/8] padata: Flush the padata queues actively Steffen Klassert
2010-04-29 23:11   ` Andrew Morton
2010-04-30 11:24     ` Steffen Klassert
2010-04-29 12:45 ` [PATCH 8/8] padata: Add some code comments Steffen Klassert
2010-04-29 23:13 ` [PATCH 0/8] padata: fixes/cleanups Andrew Morton

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