Hi Matthew, kernel test robot noticed the following build warnings: [auto build test WARNING on kleikamp-shaggy/jfs-next] [also build test WARNING on akpm-mm/mm-everything linus/master v6.8-rc2 next-20240130] [cannot apply to tytso-ext4/dev] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Matthew-Wilcox-Oracle/fs-Introduce-buffered_write_operations/20240130-135555 base: https://github.com/kleikamp/linux-shaggy jfs-next patch link: https://lore.kernel.org/r/20240130055414.2143959-2-willy%40infradead.org patch subject: [PATCH 1/3] fs: Introduce buffered_write_operations config: x86_64-allnoconfig (https://download.01.org/0day-ci/archive/20240131/202401311058.81kC2rCv-lkp@xxxxxxxxx/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240131/202401311058.81kC2rCv-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202401311058.81kC2rCv-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> mm/filemap.c:4060: warning: Function parameter or struct member 'ops' not described in 'filemap_write_iter' vim +4060 mm/filemap.c ^1da177e4c3f41 Linus Torvalds 2005-04-16 4043 e4dd9de3c66bc7 Jan Kara 2009-08-17 4044 /** 21878deb477823 Matthew Wilcox (Oracle 2024-01-30 4045) * filemap_write_iter - write data to a file e4dd9de3c66bc7 Jan Kara 2009-08-17 4046 * @iocb: IO state structure 8174202b34c30e Al Viro 2014-04-03 4047 * @from: iov_iter with data to write e4dd9de3c66bc7 Jan Kara 2009-08-17 4048 * 21878deb477823 Matthew Wilcox (Oracle 2024-01-30 4049) * This is a wrapper around __filemap_write_iter() to be used by most e4dd9de3c66bc7 Jan Kara 2009-08-17 4050 * filesystems. It takes care of syncing the file in case of O_SYNC file 9608703e488cf7 Jan Kara 2021-04-12 4051 * and acquires i_rwsem as needed. 21878deb477823 Matthew Wilcox (Oracle 2024-01-30 4052) * a862f68a8b3600 Mike Rapoport 2019-03-05 4053 * Return: 21878deb477823 Matthew Wilcox (Oracle 2024-01-30 4054) * * negative error code if no data has been written at all or if a862f68a8b3600 Mike Rapoport 2019-03-05 4055 * vfs_fsync_range() failed for a synchronous write a862f68a8b3600 Mike Rapoport 2019-03-05 4056 * * number of bytes written, even for truncated writes e4dd9de3c66bc7 Jan Kara 2009-08-17 4057 */ 21878deb477823 Matthew Wilcox (Oracle 2024-01-30 4058) ssize_t filemap_write_iter(struct kiocb *iocb, struct iov_iter *from, 21878deb477823 Matthew Wilcox (Oracle 2024-01-30 4059) const struct buffered_write_operations *ops) ^1da177e4c3f41 Linus Torvalds 2005-04-16 @4060 { ^1da177e4c3f41 Linus Torvalds 2005-04-16 4061 struct file *file = iocb->ki_filp; 148f948ba877f4 Jan Kara 2009-08-17 4062 struct inode *inode = file->f_mapping->host; ^1da177e4c3f41 Linus Torvalds 2005-04-16 4063 ssize_t ret; ^1da177e4c3f41 Linus Torvalds 2005-04-16 4064 5955102c9984fa Al Viro 2016-01-22 4065 inode_lock(inode); 3309dd04cbcd2c Al Viro 2015-04-09 4066 ret = generic_write_checks(iocb, from); 3309dd04cbcd2c Al Viro 2015-04-09 4067 if (ret > 0) 21878deb477823 Matthew Wilcox (Oracle 2024-01-30 4068) ret = __filemap_write_iter(iocb, from, ops); 5955102c9984fa Al Viro 2016-01-22 4069 inode_unlock(inode); ^1da177e4c3f41 Linus Torvalds 2005-04-16 4070 e259221763a404 Christoph Hellwig 2016-04-07 4071 if (ret > 0) e259221763a404 Christoph Hellwig 2016-04-07 4072 ret = generic_write_sync(iocb, ret); ^1da177e4c3f41 Linus Torvalds 2005-04-16 4073 return ret; ^1da177e4c3f41 Linus Torvalds 2005-04-16 4074 } 21878deb477823 Matthew Wilcox (Oracle 2024-01-30 4075) -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
