reiserfs: dont use BUG when panicking

Change reiserfs_panic() to use panic() initially instead of BUG().  Using
BUG() ignores the configurable panic behavior, so systems that should be
failing and rebooting are left hanging.  This causes problems in
active/standby HA scenarios.
Signed-off-by: NJeff Mahoney <jeffm@suse.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

fs/reiserfs/prints.c

@@ -356,13 +356,11 @@ extern struct tree_balance *cur_tb;
 void reiserfs_panic(struct super_block *sb, const char *fmt, ...)
 {
 	do_reiserfs_warning(fmt);
-	printk(KERN_EMERG "REISERFS: panic (device %s): %s\n",
-	       reiserfs_bdevname(sb), error_buf);
-	BUG();
 
-	/* this is not actually called, but makes reiserfs_panic() "noreturn" */
-	panic("REISERFS: panic (device %s): %s\n",
-	      reiserfs_bdevname(sb), error_buf);
+	dump_stack();
+
+	panic(KERN_EMERG "REISERFS: panic (device %s): %s\n",
+	       reiserfs_bdevname(sb), error_buf);
 }
 
 void reiserfs_abort(struct super_block *sb, int errno, const char *fmt, ...)