linux-kernel - [PATCH] block, dax: use correct format string in bdev_dax

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Message-Id: <20170427143054.3298781-1-arnd@arndb.de>
Date:   Thu, 27 Apr 2017 16:30:41 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Dan Williams <dan.j.williams@...el.com>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Jens Axboe <axboe@...com>, Jan Kara <jack@...e.cz>,
        Vishal Verma <vishal.l.verma@...el.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Toshi Kani <toshi.kani@....com>,
        "Darrick J. Wong" <darrick.wong@...cle.com>,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] block, dax: use correct format string in bdev_dax_supported

The new message has an incorrect format string, causing a warning in some
configurations:

fs/block_dev.c: In function 'bdev_dax_supported':
fs/block_dev.c:779:5: error: format '%d' expects argument of type 'int', but argument 2 has type 'long int' [-Werror=format=]
     "error: dax access failed (%d)", len);

This changes it to use the correct %ld instead of %d.

Fixes: d9fe35682a16 ("block, dax: convert bdev_dax_supported() to dax_direct_access()")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 fs/block_dev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/block_dev.c b/fs/block_dev.c
index f625dcebcf13..2a305c1a2d88 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -775,7 +775,7 @@ int bdev_dax_supported(struct super_block *sb, int blocksize)
 
 	if (len < 1) {
 		vfs_msg(sb, KERN_ERR,
-				"error: dax access failed (%d)", len);
+				"error: dax access failed (%ld)", len);
 		return len < 0 ? len : -EIO;
 	}
 
-- 
2.9.0