In situations when memory is occupied to a certain higher limit by system 
processes, the amount of memory available may be in negative/low values not 
suitable for testing.
Hence its better to have a memory check prior to the test beginning.

Signed-off-by: Madhura P S <[email protected]>

--- ltp-full-20130109/testcases/kernel/mem/tunable/max_map_count.c.org  
2013-01-17 17:15:38.957032558 +0530
+++ ltp-full-20130109/testcases/kernel/mem/tunable/max_map_count.c      
2013-01-17 17:16:58.092909326 +0530
@@ -152,7 +152,7 @@ static void max_map_count_test(void)
        pid_t pid;
        long max_maps;
        long map_count;
-       long max_iters;
+       long max_iters = 0;
        long memfree;
  
        /*
@@ -174,7 +174,8 @@ static void max_map_count_test(void)
         */
        memfree = read_meminfo("CommitLimit:") - read_meminfo("Committed_AS:");
        /* 64 used as a bias to make sure no overflow happen */
-       max_iters = memfree / sysconf(_SC_PAGESIZE) * 1024 - 64;
+       if (memfree > 0)
+               max_iters = memfree / sysconf(_SC_PAGESIZE) * 1024 - 64;
        if (max_iters > MAX_MAP_COUNT)
                max_iters = MAX_MAP_COUNT;




-- 
With Regards,
Madhura P S


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