linux-kernel - [PATCH] f2fs: fix 32-bit format string warning

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Message-Id: <20180724093509.1637386-1-arnd@arndb.de>
Date:   Tue, 24 Jul 2018 11:34:54 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Jaegeuk Kim <jaegeuk@...nel.org>, Chao Yu <yuchao0@...wei.com>
Cc:     Arnd Bergmann <arnd@...db.de>, Eric Biggers <ebiggers@...gle.com>,
        Yunlei He <heyunlei@...wei.com>,
        linux-f2fs-devel@...ts.sourceforge.net,
        linux-kernel@...r.kernel.org
Subject: [PATCH] f2fs: fix 32-bit format string warning

On 32-bit targets, size_t is often 'unsigned int', so printing it as %lu
causes a warning:

fs/f2fs/inode.c: In function 'sanity_check_inode':
fs/f2fs/inode.c:247:4: error: format '%lu' expects argument of type 'long unsigned int', but argument 7 has type 'unsigned int' [-Werror=format=]

The correct format string is %zu.

Fixes: ba3a252d3367 ("f2fs: fix to do sanity check with i_extra_isize")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 fs/f2fs/inode.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c
index 3fe63b0c7325..4fd339fd3ff2 100644
--- a/fs/f2fs/inode.c
+++ b/fs/f2fs/inode.c
@@ -245,7 +245,7 @@ static bool sanity_check_inode(struct inode *inode, struct page *node_page)
 		set_sbi_flag(sbi, SBI_NEED_FSCK);
 		f2fs_msg(sbi->sb, KERN_WARNING,
 			"%s: inode (ino=%lx) has corrupted i_extra_isize: %d, "
-			"max: %lu",
+			"max: %zu",
 			__func__, inode->i_ino, fi->i_extra_isize,
 			F2FS_TOTAL_EXTRA_ATTR_SIZE);
 		return false;
-- 
2.18.0