dm target:s introduce iterate devices fn

[safe/jmp/linux-2.6] / drivers / md / dm-stripe.c

diff --git a/drivers/md/dm-stripe.c b/drivers/md/dm-stripe.c
index c64fe82..b240e85 100644 (file)
--- a/drivers/md/dm-stripe.c
+++ b/drivers/md/dm-stripe.c
@@ -313,15 +313,31 @@ static int stripe_end_io(struct dm_target *ti, struct bio *bio,
        return error;
 }
 
+static int stripe_iterate_devices(struct dm_target *ti,
+                                 iterate_devices_callout_fn fn, void *data)
+{
+       struct stripe_c *sc = ti->private;
+       int ret = 0;
+       unsigned i = 0;
+
+       do
+               ret = fn(ti, sc->stripe[i].dev,
+                        sc->stripe[i].physical_start, data);
+       while (!ret && ++i < sc->stripes);
+
+       return ret;
+}
+
 static struct target_type stripe_target = {
        .name   = "striped",
-       .version = {1, 1, 0},
+       .version = {1, 2, 0},
        .module = THIS_MODULE,
        .ctr    = stripe_ctr,
        .dtr    = stripe_dtr,
        .map    = stripe_map,
        .end_io = stripe_end_io,
        .status = stripe_status,
+       .iterate_devices = stripe_iterate_devices,
 };
 
 int __init dm_stripe_init(void)