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-rw-r--r--drivers/block/rbd.c17
1 files changed, 2 insertions, 15 deletions
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 305c740778c6..d735eb13847d 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -489,10 +489,8 @@ static int rbd_open(struct block_device *bdev, fmode_t mode)
if (removing)
return -ENOENT;
- mutex_lock_nested(&ctl_mutex, SINGLE_DEPTH_NESTING);
(void) get_device(&rbd_dev->dev);
set_device_ro(bdev, rbd_dev->mapping.read_only);
- mutex_unlock(&ctl_mutex);
return 0;
}
@@ -507,9 +505,7 @@ static void rbd_release(struct gendisk *disk, fmode_t mode)
spin_unlock_irq(&rbd_dev->lock);
rbd_assert(open_count_before > 0);
- mutex_lock_nested(&ctl_mutex, SINGLE_DEPTH_NESTING);
put_device(&rbd_dev->dev);
- mutex_unlock(&ctl_mutex);
}
static const struct block_device_operations rbd_bd_ops = {
@@ -4332,8 +4328,6 @@ static int rbd_bus_add_dev(struct rbd_device *rbd_dev)
struct device *dev;
int ret;
- mutex_lock_nested(&ctl_mutex, SINGLE_DEPTH_NESTING);
-
dev = &rbd_dev->dev;
dev->bus = &rbd_bus_type;
dev->type = &rbd_device_type;
@@ -4342,8 +4336,6 @@ static int rbd_bus_add_dev(struct rbd_device *rbd_dev)
dev_set_name(dev, "%d", rbd_dev->dev_id);
ret = device_register(dev);
- mutex_unlock(&ctl_mutex);
-
return ret;
}
@@ -5149,8 +5141,6 @@ static ssize_t rbd_remove(struct bus_type *bus,
if (dev_id != ul)
return -EINVAL;
- mutex_lock_nested(&ctl_mutex, SINGLE_DEPTH_NESTING);
-
ret = -ENOENT;
spin_lock(&rbd_dev_list_lock);
list_for_each(tmp, &rbd_dev_list) {
@@ -5171,7 +5161,7 @@ static ssize_t rbd_remove(struct bus_type *bus,
}
spin_unlock(&rbd_dev_list_lock);
if (ret < 0 || already)
- goto done;
+ return ret;
rbd_bus_del_dev(rbd_dev);
ret = rbd_dev_header_watch_sync(rbd_dev, false);
@@ -5179,11 +5169,8 @@ static ssize_t rbd_remove(struct bus_type *bus,
rbd_warn(rbd_dev, "failed to cancel watch event (%d)\n", ret);
rbd_dev_image_release(rbd_dev);
module_put(THIS_MODULE);
- ret = count;
-done:
- mutex_unlock(&ctl_mutex);
- return ret;
+ return count;
}
/*