[rgushchin:cgwb.6 3/7] fs/fs-writeback.c:270:6: warning: no previous prototype for 'inode_cgwb_move_to_attached'

[kernel test robot <lkp@intel.com>]

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tree:   https://github.com/rgushchin/linux.git cgwb.6
head:   5f789741798a3b19bd28a558def7cbe6bde9842a
commit: 9ef2177a5d2b49dedf1fa2dda32f8235b6939880 [3/7] fix for 1
config: openrisc-randconfig-r015-20210526 (attached as .config)
compiler: or1k-linux-gcc (GCC) 9.3.0
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://github.com/rgushchin/linux/commit/9ef2177a5d2b49dedf1fa2dda32f8235b6939880
        git remote add rgushchin https://github.com/rgushchin/linux.git
        git fetch --no-tags rgushchin cgwb.6
        git checkout 9ef2177a5d2b49dedf1fa2dda32f8235b6939880
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=openrisc 

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

All warnings (new ones prefixed by >>):

>> fs/fs-writeback.c:270:6: warning: no previous prototype for 'inode_cgwb_move_to_attached' [-Wmissing-prototypes]
     270 | void inode_cgwb_move_to_attached(struct inode *inode, struct bdi_writeback *wb)
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~~~


vim +/inode_cgwb_move_to_attached +270 fs/fs-writeback.c

21c6321fbb3a378 Tejun Heo      2015-05-28  261  
3f28da6584d53a3 Roman Gushchin 2021-05-25  262  /**
3f28da6584d53a3 Roman Gushchin 2021-05-25  263   * inode_cgwb_move_to_attached - put the inode onto wb->b_attached list
3f28da6584d53a3 Roman Gushchin 2021-05-25  264   * @inode: inode of interest with i_lock held
3f28da6584d53a3 Roman Gushchin 2021-05-25  265   * @wb: target bdi_writeback
3f28da6584d53a3 Roman Gushchin 2021-05-25  266   *
3f28da6584d53a3 Roman Gushchin 2021-05-25  267   * Remove the inode from wb's io lists and if necessarily put onto b_attached
3f28da6584d53a3 Roman Gushchin 2021-05-25  268   * list.  Only inodes attached to cgwb's are kept on this list.
3f28da6584d53a3 Roman Gushchin 2021-05-25  269   */
3f28da6584d53a3 Roman Gushchin 2021-05-25 @270  void inode_cgwb_move_to_attached(struct inode *inode, struct bdi_writeback *wb)
3f28da6584d53a3 Roman Gushchin 2021-05-25  271  {
3f28da6584d53a3 Roman Gushchin 2021-05-25  272  	assert_spin_locked(&wb->list_lock);
3f28da6584d53a3 Roman Gushchin 2021-05-25  273  	assert_spin_locked(&inode->i_lock);
3f28da6584d53a3 Roman Gushchin 2021-05-25  274  
9ef2177a5d2b49d Roman Gushchin 2021-05-27  275  	inode->i_state &= ~I_SYNC_QUEUED;
3f28da6584d53a3 Roman Gushchin 2021-05-25  276  	if (wb != &wb->bdi->wb)
3f28da6584d53a3 Roman Gushchin 2021-05-25  277  		list_move(&inode->i_io_list, &wb->b_attached);
3f28da6584d53a3 Roman Gushchin 2021-05-25  278  	else
3f28da6584d53a3 Roman Gushchin 2021-05-25  279  		list_del_init(&inode->i_io_list);
9ef2177a5d2b49d Roman Gushchin 2021-05-27  280  	wb_io_lists_depopulated(wb);
3f28da6584d53a3 Roman Gushchin 2021-05-25  281  }
3f28da6584d53a3 Roman Gushchin 2021-05-25  282  

:::::: The code at line 270 was first introduced by commit
:::::: 3f28da6584d53a3d8e9bb4ec76ef4ad06593425b writeback, cgroup: keep list of inodes attached to bdi_writeback

:::::: TO: Roman Gushchin <guro@fb.com>
:::::: CC: Roman Gushchin <guro@fb.com>

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

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