From 44a52022e7f15cbaab957df1c14f7a4f527ef7cf Mon Sep 17 00:00:00 2001
From: Randy Dunlap <rdunlap@infradead.org>
Date: Sun, 22 Mar 2020 19:45:41 -0700
Subject: [PATCH] ext2: fix empty body warnings when -Wextra is used
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
When EXT2_ATTR_DEBUG is not defined, modify the 2 debug macros
to use the no_printk() macro instead of <nothing>.
This fixes gcc warnings when -Wextra is used:
../fs/ext2/xattr.c:252:42: warning: suggest braces around empty body in an 鈥榠f鈥� statement [-Wempty-body]
../fs/ext2/xattr.c:258:42: warning: suggest braces around empty body in an 鈥榠f鈥� statement [-Wempty-body]
../fs/ext2/xattr.c:330:42: warning: suggest braces around empty body in an 鈥榠f鈥� statement [-Wempty-body]
../fs/ext2/xattr.c:872:45: warning: suggest braces around empty body in an 鈥榚lse鈥� statement [-Wempty-body]
I have verified that the only object code change (with gcc 7.5.0) is
the reversal of some instructions from 'cmp a,b' to 'cmp b,a'.
Link: https://lore.kernel.org/r/e18a7395-61fb-2093-18e8-ed4f8cf56248@infradead.org
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Jan Kara <jack@suse.com>
Cc: linux-ext4@vger.kernel.org
Signed-off-by: Jan Kara <jack@suse.cz>
---
fs/ext2/xattr.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/fs/ext2/xattr.c b/fs/ext2/xattr.c
index 6d9731b03715..943cc469f42f 100644
--- a/fs/ext2/xattr.c
+++ b/fs/ext2/xattr.c
@@ -56,6 +56,7 @@
#include <linux/buffer_head.h>
#include <linux/init.h>
+#include <linux/printk.h>
#include <linux/slab.h>
#include <linux/mbcache.h>
#include <linux/quotaops.h>
@@ -84,8 +85,8 @@
printk("\n"); \
} while (0)
#else
-# define ea_idebug(f...)
-# define ea_bdebug(f...)
+# define ea_idebug(inode, f...) no_printk(f)
+# define ea_bdebug(bh, f...) no_printk(f)
#endif
static int ext2_xattr_set2(struct inode *, struct buffer_head *,
--
2.30.9