Hi Theodore, I love your patch! Perhaps something to improve: [auto build test WARNING on ext4/dev] [also build test WARNING on v4.20-rc3 next-20181119] [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/Theodore-Ts-o/ext4-add-ext4_sb_bread-to-disambiguate-ENOMEM-cases/20181120-070629 base: https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git dev config: ia64-defconfig (attached as .config) compiler: ia64-linux-gcc (GCC) 8.1.0 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=8.1.0 make.cross ARCH=ia64 All warnings (new ones prefixed by >>): In file included from include/uapi/linux/posix_types.h:5, from include/uapi/linux/types.h:14, from include/linux/compiler.h:169, from include/linux/init.h:5, from fs//ext4/xattr.c:54: fs//ext4/xattr.c: In function 'ext4_xattr_block_list': >> include/linux/stddef.h:8:14: warning: returning 'void *' from a function with return type 'int' makes integer from pointer without a cast [-Wint-conversion] #define NULL ((void *)0) ^ fs//ext4/xattr.c:699:10: note: in expansion of macro 'NULL' return NULL; ^~~~ -- In file included from include/uapi/linux/posix_types.h:5, from include/uapi/linux/types.h:14, from include/linux/compiler.h:169, from include/linux/init.h:5, from fs/ext4/xattr.c:54: fs/ext4/xattr.c: In function 'ext4_xattr_block_list': >> include/linux/stddef.h:8:14: warning: returning 'void *' from a function with return type 'int' makes integer from pointer without a cast [-Wint-conversion] #define NULL ((void *)0) ^ fs/ext4/xattr.c:699:10: note: in expansion of macro 'NULL' return NULL; ^~~~ vim +8 include/linux/stddef.h ^1da177e Linus Torvalds 2005-04-16 6 ^1da177e Linus Torvalds 2005-04-16 7 #undef NULL ^1da177e Linus Torvalds 2005-04-16 @8 #define NULL ((void *)0) 6e218287 Richard Knutsson 2006-09-30 9 :::::: The code at line 8 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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