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-rw-r--r--drivers/md/md.c2
-rw-r--r--include/linux/mutex.h2
-rw-r--r--kernel/mutex.c9
3 files changed, 12 insertions, 1 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c
index d2bcb41..3ce7a5d 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -4423,7 +4423,7 @@ static int md_open(struct inode *inode, struct file *file)
mddev_t *mddev = inode->i_bdev->bd_disk->private_data;
int err;
- if ((err = mddev_lock(mddev)))
+ if ((err = mutex_lock_interruptible_nested(&mddev->reconfig_mutex, 1)))
goto out;
err = 0;
diff --git a/include/linux/mutex.h b/include/linux/mutex.h
index b2b91c4..a7544af 100644
--- a/include/linux/mutex.h
+++ b/include/linux/mutex.h
@@ -125,8 +125,10 @@ extern int fastcall mutex_lock_interruptible(struct mutex *lock);
#ifdef CONFIG_DEBUG_LOCK_ALLOC
extern void mutex_lock_nested(struct mutex *lock, unsigned int subclass);
+extern int mutex_lock_interruptible_nested(struct mutex *lock, unsigned int subclass);
#else
# define mutex_lock_nested(lock, subclass) mutex_lock(lock)
+# define mutex_lock_interruptible_nested(lock, subclass) mutex_lock_interruptible(lock)
#endif
/*
diff --git a/kernel/mutex.c b/kernel/mutex.c
index 8c71cf7..e7cbbb8 100644
--- a/kernel/mutex.c
+++ b/kernel/mutex.c
@@ -206,6 +206,15 @@ mutex_lock_nested(struct mutex *lock, unsigned int subclass)
}
EXPORT_SYMBOL_GPL(mutex_lock_nested);
+
+int __sched
+mutex_lock_interruptible_nested(struct mutex *lock, unsigned int subclass)
+{
+ might_sleep();
+ return __mutex_lock_common(lock, TASK_INTERRUPTIBLE, subclass);
+}
+
+EXPORT_SYMBOL_GPL(mutex_lock_interruptible_nested);
#endif
/*
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