tree: https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git fscache-rewrite-indexing head: 77d7cb0fca08e72544d242d6897dede22de6bc20 commit: 77d7cb0fca08e72544d242d6897dede22de6bc20 [77/77] cifs: Support fscache indexing rewrite (untested) config: i386-randconfig-r003-20211019 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project d245f2e8597bfb52c34810a328d42b990e4af1a4) 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/dhowells/linux-fs.git/com... git remote add dhowells-fs https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git git fetch --no-tags dhowells-fs fscache-rewrite-indexing git checkout 77d7cb0fca08e72544d242d6897dede22de6bc20 # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash fs/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): In file included from fs/cifs/cifssmb.c:33: static inline struct fscache_cookie *cifs_inode_cookie(struct inode *inode) ^ fs/cifs/fscache.h:93:38: note: previous definition is here static inline struct fscache_cookie *cifs_inode_cookie(struct inode *inode) { return NULL; } ^ 1 error generated. -- In file included from fs/cifs/cifsfs.c:40: static inline struct fscache_cookie *cifs_inode_cookie(struct inode *inode) ^ fs/cifs/fscache.h:93:38: note: previous definition is here static inline struct fscache_cookie *cifs_inode_cookie(struct inode *inode) { return NULL; } ^ cifs_fscache_unuse_inode_cookie(inode, true); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^~~~ fs/cifs/fscache.h:92:20: note: 'cifs_fscache_unuse_inode_cookie' declared here static inline void cifs_fscache_unuse_inode_cookie(struct inode *inode) {} ^ 2 errors generated. -- In file included from fs/cifs/file.c:32: static inline struct fscache_cookie *cifs_inode_cookie(struct inode *inode) ^ fs/cifs/fscache.h:93:38: note: previous definition is here static inline struct fscache_cookie *cifs_inode_cookie(struct inode *inode) { return NULL; } ^ struct cifs_fscache_inode_auxdata auxdata; ^ fs/cifs/file.c:641:10: note: forward declaration of 'struct cifs_fscache_inode_auxdata' struct cifs_fscache_inode_auxdata auxdata; ^ cifs_fscache_fill_auxdata(file_inode(file), &auxdata); ^ cifs_fscache_unuse_inode_cookie(inode, file->f_mode & FMODE_WRITE); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^~~~~~~~~~~~~~~~~~~~~~~~~~ fs/cifs/fscache.h:92:20: note: 'cifs_fscache_unuse_inode_cookie' declared here static inline void cifs_fscache_unuse_inode_cookie(struct inode *inode) {} ^ 4 errors generated. -- In file included from fs/cifs/inode.c:25: static inline struct fscache_cookie *cifs_inode_cookie(struct inode *inode) ^ fs/cifs/fscache.h:93:38: note: previous definition is here static inline struct fscache_cookie *cifs_inode_cookie(struct inode *inode) { return NULL; } ^ struct cifs_fscache_inode_auxdata auxdata; ^ fs/cifs/inode.c:2263:9: note: forward declaration of 'struct cifs_fscache_inode_auxdata' struct cifs_fscache_inode_auxdata auxdata; ^ cifs_fscache_fill_auxdata(&cifsi->vfs_inode, &auxdata); ^ 3 errors generated. vim +/cifs_inode_cookie +103 fs/cifs/fscache.h 56698236e12948 Suresh Jayaraman 2010-07-05 100 9dc06558c223bb Suresh Jayaraman 2010-07-05 101 static inline void cifs_readpage_to_fscache(struct inode *inode, 9dc06558c223bb Suresh Jayaraman 2010-07-05 102 struct page *page) {} d53048a45b2865 David Howells 2021-09-14 @103 static inline struct fscache_cookie *cifs_inode_cookie(struct inode *inode) d53048a45b2865 David Howells 2021-09-14 104 { return NULL; } 54afa99057ee2f David Howells 2013-09-04 105 :::::: The code at line 103 was first introduced by commit :::::: d53048a45b2865f95be9d02feaf04a9fd55d8d93 cifs: (untested) Move to using the alternate fallback fscache I/O API :::::: TO: David Howells <dhowells(a)redhat.com&gt; :::::: CC: David Howells <dhowells(a)redhat.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org