X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=fs%2Fblock_dev.c;h=575076c018f4789c3c5f313f56b7b09674604baf;hb=5a68b2e346f043820e2ba0cde57cc75b4561c124;hp=0c59b703e9d56f8b104f4ad556e235db904573ac;hpb=255f0385c8e0d6b9005c0e09fffb5bd852f3b506;p=powerpc.git

diff --git a/fs/block_dev.c b/fs/block_dev.c
index 0c59b703e9..575076c018 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -1101,6 +1101,13 @@ static int __blkdev_get(struct block_device *bdev, mode_t mode, unsigned flags,
 			int for_part);
 static int __blkdev_put(struct block_device *bdev, int for_part);
 
+/*
+ * bd_mutex locking:
+ *
+ *  mutex_lock(part->bd_mutex)
+ *    mutex_lock_nested(whole->bd_mutex, 1)
+ */
+
 static int do_open(struct block_device *bdev, struct file *file, int for_part)
 {
 	struct module *owner = NULL;