linux-kernel - [axboe-block:for-5.16/block 189/189] block/fops.c:530:23: error: implicit declaration of function 'bdev_nr

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Fri, 5 Nov 2021 22:01:02 +0800
From:   kernel test robot <lkp@...el.com>
To:     Jens Axboe <axboe@...nel.dk>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Christoph Hellwig <hch@....de>
Subject: [axboe-block:for-5.16/block 189/189] block/fops.c:530:23: error:
 implicit declaration of function 'bdev_nr_bytes'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git for-5.16/block
head:   d4e76b1ad0065477119b544fd93c2f03550ef548
commit: d4e76b1ad0065477119b544fd93c2f03550ef548 [189/189] block: use new bdev_nr_bytes() helper for blkdev_{read,write}_iter()
config: ia64-defconfig (attached as .config)
compiler: ia64-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git/commit/?id=d4e76b1ad0065477119b544fd93c2f03550ef548
        git remote add axboe-block https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git
        git fetch --no-tags axboe-block for-5.16/block
        git checkout d4e76b1ad0065477119b544fd93c2f03550ef548
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=ia64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

   block/fops.c: In function 'blkdev_write_iter':
>> block/fops.c:530:23: error: implicit declaration of function 'bdev_nr_bytes' [-Werror=implicit-function-declaration]
     530 |         loff_t size = bdev_nr_bytes(bdev);
         |                       ^~~~~~~~~~~~~
   cc1: some warnings being treated as errors


vim +/bdev_nr_bytes +530 block/fops.c

   518	
   519	/*
   520	 * Write data to the block device.  Only intended for the block device itself
   521	 * and the raw driver which basically is a fake block device.
   522	 *
   523	 * Does not take i_mutex for the write and thus is not for general purpose
   524	 * use.
   525	 */
   526	static ssize_t blkdev_write_iter(struct kiocb *iocb, struct iov_iter *from)
   527	{
   528		struct block_device *bdev = iocb->ki_filp->private_data;
   529		struct inode *bd_inode = bdev->bd_inode;
 > 530		loff_t size = bdev_nr_bytes(bdev);
   531		struct blk_plug plug;
   532		size_t shorted = 0;
   533		ssize_t ret;
   534	
   535		if (bdev_read_only(bdev))
   536			return -EPERM;
   537	
   538		if (IS_SWAPFILE(bd_inode) && !is_hibernate_resume_dev(bd_inode->i_rdev))
   539			return -ETXTBSY;
   540	
   541		if (!iov_iter_count(from))
   542			return 0;
   543	
   544		if (iocb->ki_pos >= size)
   545			return -ENOSPC;
   546	
   547		if ((iocb->ki_flags & (IOCB_NOWAIT | IOCB_DIRECT)) == IOCB_NOWAIT)
   548			return -EOPNOTSUPP;
   549	
   550		size -= iocb->ki_pos;
   551		if (iov_iter_count(from) > size) {
   552			shorted = iov_iter_count(from) - size;
   553			iov_iter_truncate(from, size);
   554		}
   555	
   556		blk_start_plug(&plug);
   557		ret = __generic_file_write_iter(iocb, from);
   558		if (ret > 0)
   559			ret = generic_write_sync(iocb, ret);
   560		iov_iter_reexpand(from, iov_iter_count(from) + shorted);
   561		blk_finish_plug(&plug);
   562		return ret;
   563	}
   564	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

Download attachment ".config.gz" of type "application/gzip" (19957 bytes)