[LU-14317] building lustre on arm64 hit warning: format '%llu' expects argument of type 'long long unsigned int'

Mon, 18 Jan 2021 13:40:06 +0000
While building Lustre master branch on an arm64 node, I hit the following warnings:
  CC [M]  /home/exabuild/lustre-release/ldiskfs/mballoc.o
/home/exabuild/lustre-release/ldiskfs/mballoc.c: In function 'mb_seq_alloc_show':
/home/exabuild/lustre-release/ldiskfs/mballoc.c:2677:42: warning: format '%llu' expects argument of type 'long long unsigned int', but argument 3 has type 'long int' [-Wformat=]
  seq_printf(seq, "\tuseless_c1_loops: %llu\n",
                                       ~~~^
                                       %lu
/home/exabuild/lustre-release/ldiskfs/mballoc.c:2679:42: warning: format '%llu' expects argument of type 'long long unsigned int', but argument 3 has type 'long int' [-Wformat=]
  seq_printf(seq, "\tuseless_c2_loops: %llu\n",
                                       ~~~^
                                       %lu
/home/exabuild/lustre-release/ldiskfs/mballoc.c:2681:42: warning: format '%llu' expects argument of type 'long long unsigned int', but argument 3 has type 'long int' [-Wformat=]
  seq_printf(seq, "\tuseless_c3_loops: %llu\n",
                                       ~~~^
                                       %lu
/home/exabuild/lustre-release/ldiskfs/mballoc.c:2683:42: warning: format '%llu' expects argument of type 'long long unsigned int', but argument 3 has type 'long int' [-Wformat=]
  seq_printf(seq, "\tskipped_c1_loops: %llu\n",
                                       ~~~^
                                       %lu
/home/exabuild/lustre-release/ldiskfs/mballoc.c:2685:42: warning: format '%llu' expects argument of type 'long long unsigned int', but argument 3 has type 'long int' [-Wformat=]
  seq_printf(seq, "\tskipped_c2_loops: %llu\n",
                                       ~~~^
                                       %lu
/home/exabuild/lustre-release/ldiskfs/mballoc.c:2687:42: warning: format '%llu' expects argument of type 'long long unsigned int', but argument 3 has type 'long int' [-Wformat=]
  seq_printf(seq, "\tskipped_c3_loops: %llu\n",
                                       ~~~^
                                       %lu
In file included from /home/exabuild/lustre-release/ldiskfs/ldiskfs_jbd2.h:17,
                 from /home/exabuild/lustre-release/ldiskfs/mballoc.c:12:
/home/exabuild/lustre-release/ldiskfs/mballoc.c: In function 'ldiskfs_mb_release':
/home/exabuild/lustre-release/ldiskfs/mballoc.c:3180:4: warning: format '%llu' expects argument of type 'long long unsigned int', but argument 4 has type 'long int' [-Wformat=]
    "mballoc: (%llu, %llu, %llu) useless c(0,1,2) loops",
    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/exabuild/lustre-release/ldiskfs/ldiskfs.h:2778:27: note: in definition of macro 'ldiskfs_msg'
  __ldiskfs_msg(sb, level, fmt, ##__VA_ARGS__)
                           ^~~
/home/exabuild/lustre-release/ldiskfs/mballoc.c:3180:4: warning: format '%llu' expects argument of type 'long long unsigned int', but argument 5 has type 'long int' [-Wformat=]
    "mballoc: (%llu, %llu, %llu) useless c(0,1,2) loops",
    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/exabuild/lustre-release/ldiskfs/ldiskfs.h:2778:27: note: in definition of macro 'ldiskfs_msg'
  __ldiskfs_msg(sb, level, fmt, ##__VA_ARGS__)
                           ^~~
/home/exabuild/lustre-release/ldiskfs/mballoc.c:3180:4: warning: format '%llu' expects argument of type 'long long unsigned int', but argument 6 has type 'long int' [-Wformat=]
    "mballoc: (%llu, %llu, %llu) useless c(0,1,2) loops",
    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/exabuild/lustre-release/ldiskfs/ldiskfs.h:2778:27: note: in definition of macro 'ldiskfs_msg'
  __ldiskfs_msg(sb, level, fmt, ##__VA_ARGS__)
                           ^~~
/home/exabuild/lustre-release/ldiskfs/mballoc.c:3185:4: warning: format '%llu' expects argument of type 'long long unsigned int', but argument 4 has type 'long int' [-Wformat=]
    "mballoc: (%llu, %llu, %llu) skipped c(0,1,2) loops",
    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/exabuild/lustre-release/ldiskfs/ldiskfs.h:2778:27: note: in definition of macro 'ldiskfs_msg'
  __ldiskfs_msg(sb, level, fmt, ##__VA_ARGS__)
                           ^~~
/home/exabuild/lustre-release/ldiskfs/mballoc.c:3185:4: warning: format '%llu' expects argument of type 'long long unsigned int', but argument 5 has type 'long int' [-Wformat=]
    "mballoc: (%llu, %llu, %llu) skipped c(0,1,2) loops",
    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/exabuild/lustre-release/ldiskfs/ldiskfs.h:2778:27: note: in definition of macro 'ldiskfs_msg'
  __ldiskfs_msg(sb, level, fmt, ##__VA_ARGS__)
                           ^~~
/home/exabuild/lustre-release/ldiskfs/mballoc.c:3185:4: warning: format '%llu' expects argument of type 'long long unsigned int', but argument 6 has type 'long int' [-Wformat=]
    "mballoc: (%llu, %llu, %llu) skipped c(0,1,2) loops",
    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/exabuild/lustre-release/ldiskfs/ldiskfs.h:2778:27: note: in definition of macro 'ldiskfs_msg'
  __ldiskfs_msg(sb, level, fmt, ##__VA_ARGS__)
                           ^~~
Whamcloud Community JIRA

[LU-14317] building lustre on arm64 hit warning: format '%llu' expects argument of type 'long long unsigned int'
