linux-kernel - Re: [PATCH] btrfs: use kbasename in btrfsic

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Message-ID: <201511271640.QHZdu1xB%fengguang.wu@intel.com>
Date:	Fri, 27 Nov 2015 16:32:49 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Rasmus Villemoes <linux@...musvillemoes.dk>
Cc:	kbuild-all@...org, Chris Mason <clm@...com>,
	Josef Bacik <jbacik@...com>, David Sterba <dsterba@...e.com>,
	Rasmus Villemoes <linux@...musvillemoes.dk>,
	linux-btrfs@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] btrfs: use kbasename in btrfsic_mount

Hi Rasmus,

[auto build test WARNING on: v4.4-rc2]
[also build test WARNING on: next-20151127]

url:    https://github.com/0day-ci/linux/commits/Rasmus-Villemoes/btrfs-use-kbasename-in-btrfsic_mount/20151127-161249
config: i386-randconfig-s1-201547 (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All warnings (new ones prefixed by >>):

   fs/btrfs/check-integrity.c: In function 'btrfsic_mount':
>> fs/btrfs/check-integrity.c:3140:5: warning: assignment discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
      p = kbasename(ds->name);
        ^

vim +/const +3140 fs/btrfs/check-integrity.c

  3124			char *p;
  3125	
  3126			if (!device->bdev || !device->name)
  3127				continue;
  3128	
  3129			ds = btrfsic_dev_state_alloc();
  3130			if (NULL == ds) {
  3131				printk(KERN_INFO
  3132				       "btrfs check-integrity: kmalloc() failed!\n");
  3133				mutex_unlock(&btrfsic_mutex);
  3134				return -1;
  3135			}
  3136			ds->bdev = device->bdev;
  3137			ds->state = state;
  3138			bdevname(ds->bdev, ds->name);
  3139			ds->name[BDEVNAME_SIZE - 1] = '\0';
> 3140			p = kbasename(ds->name);
  3141			strlcpy(ds->name, p, sizeof(ds->name));
  3142			btrfsic_dev_state_hashtable_add(ds,
  3143							&btrfsic_dev_state_hashtable);
  3144		}
  3145	
  3146		ret = btrfsic_process_superblock(state, fs_devices);
  3147		if (0 != ret) {
  3148			mutex_unlock(&btrfsic_mutex);

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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