Allow "--write-behind=" to be done in grow mode.

From: Ian Dall <ian@beware.dropbear.id.au>

I have a small patch to mdadm which allows the write-behind amount to be
set a array grow time (instead of currently only at grow or create
time). I have tested this fairly extensively on some arrays built out of
loop back devices, and once on a real live array.

1 files changed, 1 insertions, 0 deletions

diff --git a/mdadm.c b/mdadm.c
index e96ce68a..45ffaee2 100644
--- a/mdadm.c
+++ b/mdadm.c
@@ -844,6 +844,7 @@ int main(int argc, char *argv[])
 			bitmap_chunk = bitmap_chunk ? bitmap_chunk * 1024 : 512;
 			continue;
 
+		case O(GROW, WriteBehind):
 		case O(BUILD, WriteBehind):
 		case O(CREATE, WriteBehind): /* write-behind mode */
 			write_behind = DEFAULT_MAX_WRITE_BEHIND;