Subject: [PATCH] mdadm: raid0: support chunks of 4K*n for raid0

[raz ben yehuda <raziebe@gmail.com>]

Neil.
I do not know what is policy for mdadm patches. I would thankful for some instructions.
The bellow is the patch I applied to support raid0 chunk sizes 4K*n.
---
--- mdadm.c	(revision 16152)
+++ mdadm.c	(working copy)
@@ -314,7 +314,8 @@
 				exit(2);
 			}
 			chunk = strtol(optarg, &c, 10);
-			if (!optarg[0] || *c || chunk<4 || (chunk%4)) {
+			if (!optarg[0] || *c || chunk<4 ||  (((chunk-1)&chunk) && level !=0)
+					||  (((chunk%4) && level ==0) )) {
 				fprintf(stderr, Name ": invalid chunk/rounding value: %s\n",
 					optarg);
 				exit(2);