--- interbench.c.orig	2009-10-30 23:14:59.000000000 -0500
+++ interbench.c	2012-07-10 19:06:00.000000000 -0500
@@ -71,6 +71,7 @@ struct user_data {
 	char datestamp[13];
 	FILE *logfile;
 } ud = {
+	.ram = 0,
 	.duration = 30,
 	.cpu_load = 4,
 	.log = 1,
@@ -652,6 +653,8 @@ void emulate_write(struct thread *th)
 			terminal_error("fopen");
 		if (stat(name, &statbuf) == -1)
 			terminal_fileopen_error(fp, "stat");
+		if (statbuf.st_blksize < MIN_BLK_SIZE)
+			statbuf.st_blksize = MIN_BLK_SIZE;
 		for (i = 0 ; i < mem; i++) {
 			if (fwrite(buf, statbuf.st_blksize, 1, fp) != 1)
 				terminal_fileopen_error(fp, "fwrite");
@@ -1136,14 +1139,17 @@ void get_ram(void)
 	if(!(meminfo = fopen("/proc/meminfo", "r")))
 		terminal_error("fopen");
 
-	ud.ram = ud.swap = 0;
-	while( !feof(meminfo) && !fscanf(meminfo, "MemTotal: %lu kB", &ud.ram) )
-            fgets(aux,sizeof(aux),meminfo);
+	if (!ud.ram)
+	{
+	    while( !feof(meminfo) && !fscanf(meminfo, "MemTotal: %lu kB", &ud.ram) )
+        	fgets(aux,sizeof(aux),meminfo);
+	}
+	ud.swap = 0;
 	while( !feof(meminfo) && !fscanf(meminfo, "SwapTotal: %lu kB", &ud.swap) )
             fgets(aux,sizeof(aux),meminfo);
 	if (fclose(meminfo) == -1)
 		terminal_error("fclose");
-
+ 
 	if( !ud.ram || !ud.swap ) {
 		unsigned long i;
 		fprintf(stderr, "\nCould not get memory or swap size. ");
@@ -1399,6 +1405,7 @@ void usage(void)
 	fprintf(stderr, "\t[-h]\n\n");
 	fprintf(stderr, " -l\tUse <int> loops per sec (default: use saved benchmark)\n");
 	fprintf(stderr, " -L\tUse cpu load of <int> with burn load (default: 4)\n");
+	fprintf(stderr, " -M\tForce RAM size to <int>. Useful when disk is smaller than RAM.\n");
 	fprintf(stderr, " -t\tSeconds to run each benchmark (default: 30)\n");
 	fprintf(stderr, " -B\tNice the benchmarked thread to <int> (default: 0)\n");
 	fprintf(stderr, " -N\tNice the load thread to <int> (default: 0)\n");
@@ -1482,7 +1489,7 @@ int main(int argc, char **argv)
 		terminal_error("signal");
 #endif
 
-	while ((q = getopt(argc, argv, "hl:L:B:N:ut:bcnrC:I:m:w:x:W:X:")) != -1) {
+	while ((q = getopt(argc, argv, "hl:L:M:B:N:ut:bcnrC:I:m:w:x:W:X:")) != -1) {
 		switch (q) {
 			case 'h':
 				usage();
@@ -1496,6 +1503,9 @@ int main(int argc, char **argv)
 			case 'L':
 				ud.cpu_load = atoi(optarg);
 				break;
+			case 'M':
+				ud.ram = atoi(optarg);
+				break;
 			case 'B':
 				ud.bench_nice = atoi(optarg);
 				break;