[LU-16323] Build failed with "error: conflicting types for ‘rhashtable_walk_enter’"

Fri, 18 Nov 2022 07:34:34 +0000

Build fails with error: conflicting types for ‘rhashtable_walk_enter’

make[3]: Entering directory '/usr/src/kernels/4.18.0-372.9.1.el8.x86_64'
  CC [M]  /root/lustre-release/lustre-release/libcfs/libcfs/linux/linux-hash.o
In file included from /root/lustre-release/lustre-release/libcfs/libcfs/linux/linux-hash.c:33:
/root/lustre-release/lustre-release/libcfs/include/libcfs/linux/linux-hash.h:70:12: error: conflicting types for ‘rhashtable_walk_enter’
 static int rhashtable_walk_enter(struct rhashtable *ht,
            ^~~~~~~~~~~~~~~~~~~~~
In file included from /root/lustre-release/lustre-release/libcfs/include/libcfs/linux/linux-hash.h:27,
                 from /root/lustre-release/lustre-release/libcfs/libcfs/linux/linux-hash.c:33:
include/linux/rhashtable.h:248:6: note: previous declaration of ‘rhashtable_walk_enter’ was here
 void rhashtable_walk_enter(struct rhashtable *ht,
      ^~~~~~~~~~~~~~~~~~~~~
In file included from /root/lustre-release/lustre-release/libcfs/libcfs/linux/linux-hash.c:33:
/root/lustre-release/lustre-release/libcfs/include/libcfs/linux/linux-hash.h: In function ‘rhashtable_walk_enter’:
/root/lustre-release/lustre-release/libcfs/include/libcfs/linux/linux-hash.h:76:9: error: implicit declaration of function ‘rhashtable_walk_init’; did you mean ‘rhashtable_walk_exit’? [-Werror=implicit-function-declaration]
  return rhashtable_walk_init(ht, iter);
         ^~~~~~~~~~~~~~~~~~~~
         rhashtable_walk_exit
At top level:
/root/lustre-release/lustre-release/libcfs/include/libcfs/linux/linux-hash.h:70:12: error: ‘rhashtable_walk_enter’ defined but not used [-Werror=unused-function]
 static int rhashtable_walk_enter(struct rhashtable *ht,
            ^~~~~~~~~~~~~~~~~~~~~

rhashtable.h from kernel-devel

$ rpm -q --whatprovides /usr/src/kernels/4.18.0-372.9.1.el8.x86_64/include/linux/rhashtable.h
kernel-devel-4.18.0-372.9.1.el8.x86_64

Kernel version

$ uname -r
4.18.0-372.9.1.el8.x86_64

Steps to reproduce

$ git pull
$ sh autogen.sh
$ ./configure
$ make

Master (Head) is pointing to...

18e14c7099065891516b189467c0ff11ec7f470a (origin/master, origin/HEAD, master) LU-16216 tests: Update sanity-lnet for other LNDs

Whamcloud Community JIRA

[LU-16323] Build failed with "error: conflicting types for ‘rhashtable_walk_enter’"