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-rw-r--r--include/linux/sched.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 78eb92ae4d94..85b53f87c703 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -817,6 +817,11 @@ struct task_struct {
/* Protection of proc_dentry: nesting proc_lock, dcache_lock, write_lock_irq(&tasklist_lock); */
spinlock_t proc_lock;
+#ifdef CONFIG_DEBUG_MUTEXES
+ /* mutex deadlock detection */
+ struct mutex_waiter *blocked_on;
+#endif
+
/* journalling filesystem info */
void *journal_info;

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