Introduce sc_arg_max() helper

Just a cast and an assert.

1 files changed, 3 insertions, 6 deletions

diff --git a/src/journal/journald-context.c b/src/journal/journald-context.c
index e6aeb03b77..e41e4fc5a7 100644
--- a/src/journal/journald-context.c
+++ b/src/journal/journald-context.c
@@ -7,6 +7,7 @@
 #include "alloc-util.h"
 #include "audit-util.h"
 #include "cgroup-util.h"
+#include "env-util.h"
 #include "fd-util.h"
 #include "fileio.h"
 #include "fs-util.h"
@@ -76,18 +77,14 @@ static size_t cache_max(void) {
                 if (r < 0) {
                         log_warning_errno(r, "Cannot query /proc/meminfo for MemTotal: %m");
                         cached = CACHE_MAX_FALLBACK;
-                } else {
+                } else
                         /* Cache entries are usually a few kB, but the process cmdline is controlled by the
                          * user and can be up to _SC_ARG_MAX, usually 2MB. Let's say that approximately up to
                          * 1/8th of memory may be used by the cache.
                          *
                          * In the common case, this formula gives 64 cache entries for each GB of RAM.
                          */
-                        long l = sysconf(_SC_ARG_MAX);
-                        assert(l > 0);
-
-                        cached = CLAMP(mem_total / 8 / (uint64_t) l, CACHE_MAX_MIN, CACHE_MAX_MAX);
-                }
+                        cached = CLAMP(mem_total / 8 / sc_arg_max(), CACHE_MAX_MIN, CACHE_MAX_MAX);
         }
 
         return cached;