Hi Vivek, I love your patch! Perhaps something to improve: [auto build test WARNING on fuse/for-next] [also build test WARNING on v4.20-rc6] [cannot apply to next-20181211] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Vivek-Goyal/virtio-fs-shared-file-system-for-virtual-machines/20181211-103034 base: https://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse.git for-next config: arm64-allmodconfig (attached as .config) compiler: aarch64-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree GCC_VERSION=7.2.0 make.cross ARCH=arm64 All warnings (new ones prefixed by >>): fs/ext2/inode.c: In function 'ext2_dax_writepages': fs/ext2/inode.c:959:33: error: passing argument 3 of 'dax_writeback_mapping_range' from incompatible pointer type [-Werror=incompatible-pointer-types] mapping->host->i_sb->s_bdev, wbc); ^~~ In file included from fs/ext2/inode.c:29:0: include/linux/dax.h:87:5: note: expected 'struct dax_device *' but argument is of type 'struct writeback_control *' int dax_writeback_mapping_range(struct address_space *mapping, ^~~~~~~~~~~~~~~~~~~~~~~~~~~ fs/ext2/inode.c:958:9: error: too few arguments to function 'dax_writeback_mapping_range' return dax_writeback_mapping_range(mapping, ^~~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from fs/ext2/inode.c:29:0: include/linux/dax.h:87:5: note: declared here int dax_writeback_mapping_range(struct address_space *mapping, ^~~~~~~~~~~~~~~~~~~~~~~~~~~ >> fs/ext2/inode.c:960:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ cc1: some warnings being treated as errors vim +960 fs/ext2/inode.c 7f6d5b52 Ross Zwisler 2016-02-26 954 fb094c90 Dan Williams 2017-12-21 955 static int fb094c90 Dan Williams 2017-12-21 956 ext2_dax_writepages(struct address_space *mapping, struct writeback_control *wbc) fb094c90 Dan Williams 2017-12-21 957 { fb094c90 Dan Williams 2017-12-21 @958 return dax_writeback_mapping_range(mapping, fb094c90 Dan Williams 2017-12-21 959 mapping->host->i_sb->s_bdev, wbc); ^1da177e Linus Torvalds 2005-04-16 @960 } ^1da177e Linus Torvalds 2005-04-16 961 :::::: The code at line 960 was first introduced by commit :::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2 :::::: TO: Linus Torvalds <torvalds@xxxxxxxxxxxxxxx> :::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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