[LU-13060] error: ‘ldiskfs_iget’ undeclared here (not in a function)

Blocker — Wed, 17 Feb 2021 22:19:56 +0000

While building Lustre server on RHEL 8.1 with kernel 4.18.0-147.0.3.el8_1, the build failed as follows:

make[3]: Entering directory '/root/kernel/rpmbuild/BUILD/kernel-4.18.0-147.0.3.el8_1/linux-4.18.0-147.0.3.el8_lustre.x86_64'
  CC [M]  /root/lustre-release/ldiskfs/inode.o
In file included from include/linux/linkage.h:7,
                 from include/linux/fs.h:6,
                 from /root/lustre-release/ldiskfs/inode.c:22:
/root/lustre-release/ldiskfs/inode.c:6294:15: error: ‘ldiskfs_iget’ undeclared here (not in a function); did you mean ‘ldiskfs_ioctl’?
 EXPORT_SYMBOL(ldiskfs_iget);
               ^~~~~~~~~~~~
include/linux/export.h:59:16: note: in definition of macro ‘___EXPORT_SYMBOL’
  extern typeof(sym) sym;      \
                ^~~
/root/lustre-release/ldiskfs/inode.c:6294:1: note: in expansion of macro ‘EXPORT_SYMBOL’
 EXPORT_SYMBOL(ldiskfs_iget);
 ^~~~~~~~~~~~~
make[5]: *** [scripts/Makefile.build:313: /root/lustre-release/ldiskfs/inode.o] Error 1

In kernel 4.18.0-147.0.3.el8_1:

struct inode *__ext4_iget(struct super_block *sb, unsigned long ino,
                          ext4_iget_flags flags, const char *function,
                          unsigned int line);

In previous kernel versions:

struct inode *ext4_iget(struct super_block *sb, unsigned long ino);

Whamcloud Community JIRA

[LU-13060] error: ‘ldiskfs_iget’ undeclared here (not in a function)