Hi Ba,

kernel test robot noticed the following build warnings:

[auto build test WARNING on shuah-kselftest/next] [also build test WARNING on shuah-kselftest/fixes linus/master v6.11 next-20240924] [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/Ba-Jing/memfd-fuse_mnt-remove... base: https://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest.git next patch link: https://lore.kernel.org/r/20240903044455.11268-1-bajing%40cmss.chinamobile.c... patch subject: [PATCH] memfd: fuse_mnt: remove unused macro :::::: branch date: 24 hours ago :::::: commit date: 24 hours ago 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/20240924/202409241613.KyXs9fiF-lkp@i...)

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@intel.com | Closes: https://lore.kernel.org/r/202409241613.KyXs9fiF-lkp@intel.com/

All warnings (new ones prefixed by >>):

fuse_mnt.c:101:10: error: 'struct fuse_operations_compat2' has no member named 'readdir' 101 | .readdir = memfd_readdir, | ^~~~~~~

...

fuse_mnt.c:101:27: warning: initialization of 'int (*)(const char *, char *, size_t)' {aka 'int (*)(const char *, char *, long unsigned int)'} from incompatible pointer type 'int (*)(const char *, void *, int (*)(void *, const char *, const struct stat *, off_t), off_t, struct fuse_file_info *)' {aka 'int (*)(const char *, void *, int (*)(void *, const char *, const struct stat *, long int), long int, struct fuse_file_info *)'} [-Wincompatible-pointer-types]

101 | .readdir = memfd_readdir, | ^~~~~~~~~~~~~ fuse_mnt.c:101:27: note: (near initialization for 'memfd_ops.readlink')

...

fuse_mnt.c:102:27: warning: initialization of 'int (*)(const char *, int)' from incompatible pointer type 'int (*)(const char *, struct fuse_file_info *)' [-Wincompatible-pointer-types]

102 | .open = memfd_open, | ^~~~~~~~~~ fuse_mnt.c:102:27: note: (near initialization for 'memfd_ops.open')

...

fuse_mnt.c:103:27: warning: initialization of 'int (*)(const char *, char *, size_t, off_t)' {aka 'int (*)(const char *, char *, long unsigned int, long int)'} from incompatible pointer type 'int (*)(const char *, char *, size_t, off_t, struct fuse_file_info *)' {aka 'int (*)(const char *, char *, long unsigned int, long int, struct fuse_file_info *)'} [-Wincompatible-pointer-types]

103 | .read = memfd_read, | ^~~~~~~~~~ fuse_mnt.c:103:27: note: (near initialization for 'memfd_ops.read') In file included from /usr/include/fuse.h:9, from fuse_mnt.c:15: fuse_mnt.c: In function 'main': fuse_mnt.c:108:16: error: too many arguments to function 'fuse_main_compat2' 108 | return fuse_main(argc, argv, &memfd_ops, NULL); | ^~~~~~~~~ In file included from /usr/include/fuse/fuse.h:1012: /usr/include/fuse/fuse_compat.h:151:5: note: declared here 151 | int fuse_main_compat2(int argc, char *argv[], | ^~~~~~~~~~~~~~~~~