Make init handle current 2.4.x sysinfo behavior

 -Erik


git-svn-id: svn://busybox.net/trunk/busybox@1028 69ca8d6d-28ef-0310-b511-8ec308f3f277

1 files changed, 9 insertions, 12 deletions

diff --git a/init/init.c b/init/init.c
index 91a72550b..b532ea88f 100644
--- a/init/init.c
+++ b/init/init.c
@@ -296,20 +296,17 @@ static int check_free_memory()
                 printf("Error checking free memory: %s\n", strerror(errno));
                 return -1;
         }
+        /* Kernels prior to 2.4.x will return info.mem_unit==0, so cope... */
         if (info.mem_unit==0) {
-                /* Looks like we have a kernel prior to Linux 2.4.x */
-                info.mem_unit=1024;
-                info.totalram/=info.mem_unit;
-                info.totalswap/=info.mem_unit;
-        } else {
-                /* Bah. Linux 2.4.x completely changed sysinfo. This can in theory
-                overflow a 32 bit unsigned long, but who puts more then 4GiB ram+swap
-                on an embedded system? */
-                info.mem_unit/=1024;
-                info.totalram*=info.mem_unit;
-                info.totalswap*=info.mem_unit;
+                info.mem_unit=1;
         }
-
+        info.mem_unit*=1024;
+        
+        /* Note:  These values can in theory overflow a 32 bit unsigned long (i.e.
+         * mem >=  Gib), but who puts more then 4GiB ram+swap on an embedded
+         * system? */
+        info.totalram/=info.mem_unit; 
+        info.totalswap/=info.mem_unit;
         return(info.totalram+info.totalswap);
 }