[PATCH] sane minimum proc count

Again from UCLinux merge but relevant on its own for any embedded tiny box

kernel/fork.c

@@ -166,8 +166,11 @@ void __init fork_init(unsigned long mempages)
 	 */
 	max_threads = mempages / (THREAD_SIZE/PAGE_SIZE) / 8;
 
-	init_task.rlim[RLIMIT_NPROC].rlim_cur = max_threads/2;
-	init_task.rlim[RLIMIT_NPROC].rlim_max = max_threads/2;
+	/*
+	 * we need to allow at least 10 threads to boot a system
+	 */
+	init_task.rlim[RLIMIT_NPROC].rlim_cur = max(10, max_threads/2);
+	init_task.rlim[RLIMIT_NPROC].rlim_max = max(10, max_threads/2);
 }
 
 static struct task_struct *dup_task_struct(struct task_struct *orig)