ext4: add no_printk argument validation, fix fallout

Add argument validation to debug functions.
Use ##__VA_ARGS__.

Fix format and argument mismatches.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

fs/ext4/ext4_extents.h

@@ -47,9 +47,9 @@
  */
 #define EXT_DEBUG__
 #ifdef EXT_DEBUG
-#define ext_debug(a...)		printk(a)
+#define ext_debug(fmt, ...)	printk(fmt, ##__VA_ARGS__)
 #else
-#define ext_debug(a...)
+#define ext_debug(fmt, ...)	no_printk(fmt, ##__VA_ARGS__)
 #endif
 
 /*