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-rw-r--r--erts/emulator/beam/erl_bif_info.c7
1 files changed, 2 insertions, 5 deletions
diff --git a/erts/emulator/beam/erl_bif_info.c b/erts/emulator/beam/erl_bif_info.c
index 3fb866733c..6cedf3c8a5 100644
--- a/erts/emulator/beam/erl_bif_info.c
+++ b/erts/emulator/beam/erl_bif_info.c
@@ -2284,9 +2284,7 @@ BIF_RETTYPE system_info_1(BIF_ALIST_1)
} else if (ERTS_IS_ATOM_STR("dist_ctrl", BIF_ARG_1)) {
DistEntry *dep;
i = 0;
- /* Need to be the only thread running... */
- erts_smp_proc_unlock(BIF_P, ERTS_PROC_LOCK_MAIN);
- erts_smp_thr_progress_block();
+ erts_smp_rwmtx_rlock(&erts_dist_table_rwmtx);
for (dep = erts_visible_dist_entries; dep; dep = dep->next)
++i;
for (dep = erts_hidden_dist_entries; dep; dep = dep->next)
@@ -2309,8 +2307,7 @@ BIF_RETTYPE system_info_1(BIF_ALIST_1)
res = CONS(hp, tpl, res);
hp += 2;
}
- erts_smp_thr_progress_unblock();
- erts_smp_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN);
+ erts_smp_rwmtx_runlock(&erts_dist_table_rwmtx);
BIF_RET(res);
} else if (BIF_ARG_1 == am_system_version) {
erts_dsprintf_buf_t *dsbufp = erts_create_tmp_dsbuf(0);