patch-2.4.17 linux/drivers/block/loop.c

• Lines: 20
• Date: Fri Dec 21 16:40:32 2001
• Orig file: linux-2.4.16/drivers/block/loop.c
• Orig date: Mon Nov 19 22:48:02 2001

diff -Naur -X /home/marcelo/lib/dontdiff linux-2.4.16/drivers/block/loop.c linux/drivers/block/loop.c
@@ -578,6 +578,8 @@
 	atomic_inc(&lo->lo_pending);
 	spin_unlock_irq(&lo->lo_lock);
 
+	current->flags |= PF_NOIO;
+
 	/*
 	 * up sem, we are running
 	 */
@@ -640,6 +642,10 @@
 
 	if (S_ISBLK(inode->i_mode)) {
 		lo_device = inode->i_rdev;
+		if (lo_device == dev) {
+			error = -EBUSY;
+			goto out;
+		}
 	} else if (S_ISREG(inode->i_mode)) {
 		struct address_space_operations *aops = inode->i_mapping->a_ops;
 		/*