linux-kernel - Re: [PATCH] let kernfs_name_locked & kernfs_name return size

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Date:	Thu, 11 Feb 2016 00:41:08 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Christian Brauner <christian.brauner@...lbox.org>
Cc:	kbuild-all@...org, tj@...nel.org, gregkh@...uxfoundation.org,
	linux-kernel@...r.kernel.org,
	Christian Brauner <christian.brauner@...lbox.org>
Subject: Re: [PATCH] let kernfs_name_locked & kernfs_name return size_t

Hi Christian,

[auto build test ERROR on driver-core/driver-core-testing]
[also build test ERROR on v4.5-rc3 next-20160210]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]

url:    https://github.com/0day-ci/linux/commits/Christian-Brauner/let-kernfs_name_locked-kernfs_name-return-size_t/20160211-002314
config: x86_64-randconfig-x012-201606 (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

>> fs/kernfs/dir.c:83:8: error: conflicting types for 'kernfs_name'
    size_t kernfs_name(struct kernfs_node *kn, char *buf, size_t buflen)
           ^
   In file included from fs/kernfs/kernfs-internal.h:19:0,
                    from fs/kernfs/dir.c:19:
   include/linux/kernfs.h:268:5: note: previous declaration of 'kernfs_name' was here
    int kernfs_name(struct kernfs_node *kn, char *buf, size_t buflen);
        ^

vim +/kernfs_name +83 fs/kernfs/dir.c

    77	 * Copies the name of @kn into @buf of @buflen bytes.  The behavior is
    78	 * similar to strlcpy().  It returns the length of @kn's name and if @buf
    79	 * isn't long enough, it's filled upto @buflen-1 and nul terminated.
    80	 *
    81	 * This function can be called from any context.
    82	 */
  > 83	size_t kernfs_name(struct kernfs_node *kn, char *buf, size_t buflen)
    84	{
    85		unsigned long flags;
    86		int ret;

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Download attachment ".config.gz" of type "application/octet-stream" (30599 bytes)