---

yaml --- r: 8568 b: refs/heads/master c: b342659 h: refs/heads/master v: v3
git-mirror · Sep 12, 2005 · 3fd3f85 · 3fd3f85
1 parent 8985cbf
commit 3fd3f85
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Showing 3 changed files with 10 additions and 6 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: f24ec7f6c6278c0ea4c00efe96d50b1e66796c44
+refs/heads/master: b3426599af9524104be6938bcb1fcaab314781c7
diff --git a/trunk/include/linux/sched.h b/trunk/include/linux/sched.h
@@ -785,7 +785,6 @@ struct task_struct {
 	short il_next;
 #endif
 #ifdef CONFIG_CPUSETS
-	short cpuset_sem_nest_depth;
 	struct cpuset *cpuset;
 	nodemask_t mems_allowed;
 	int cpuset_mems_generation;

diff --git a/trunk/kernel/cpuset.c b/trunk/kernel/cpuset.c
@@ -180,6 +180,8 @@ static struct super_block *cpuset_sb = NULL;
  */
 
 static DECLARE_MUTEX(cpuset_sem);
+static struct task_struct *cpuset_sem_owner;
+static int cpuset_sem_depth;
 
 /*
  * The global cpuset semaphore cpuset_sem can be needed by the
@@ -200,16 +202,19 @@ static DECLARE_MUTEX(cpuset_sem);
 
 static inline void cpuset_down(struct semaphore *psem)
 {
-	if (current->cpuset_sem_nest_depth == 0)
+	if (cpuset_sem_owner != current) {
 		down(psem);
-	current->cpuset_sem_nest_depth++;
+		cpuset_sem_owner = current;
+	}
+	cpuset_sem_depth++;
 }
 
 static inline void cpuset_up(struct semaphore *psem)
 {
-	current->cpuset_sem_nest_depth--;
-	if (current->cpuset_sem_nest_depth == 0)
+	if (--cpuset_sem_depth == 0) {
+		cpuset_sem_owner = NULL;
 		up(psem);
+	}
 }
 
 /*