BKL-removal: convert ext2 over to use unlocked_ioctl

I checked ext2_ioctl and could not find anything in there that would need the
BKL.  So convert it over to use unlocked_ioctl

Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/ext2/dir.c b/fs/ext2/dir.c
index d868e26..8dededd 100644
--- a/fs/ext2/dir.c
+++ b/fs/ext2/dir.c
@@ -703,7 +703,7 @@
 	.llseek		= generic_file_llseek,
 	.read		= generic_read_dir,
 	.readdir	= ext2_readdir,
-	.ioctl		= ext2_ioctl,
+	.unlocked_ioctl = ext2_ioctl,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	= ext2_compat_ioctl,
 #endif