mdmon: recognise --all in place of /proc/mdstat

It seems more meaningful.
Keep the old option as well for back compatibility.

Signed-off-by: NeilBrown <neilb@suse.de>

1 files changed, 2 insertions, 1 deletions

diff --git a/mdmon.c b/mdmon.c
index fa49706b..37474603 100644
--- a/mdmon.c
+++ b/mdmon.c
@@ -274,7 +274,8 @@ int main(int argc, char *argv[])
 		usage();
 	}
 
-	if (strcmp(container_name, "/proc/mdstat") == 0) {
+	if (strcmp(container_name, "/proc/mdstat") == 0 ||
+	    strcmp(container_name, "--all") == 0) {
 		struct mdstat_ent *mdstat, *e;
 
 		/* launch an mdmon instance for each container found */