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authorJan Beulich <JBeulich@suse.com>2016-02-10 04:18:10 -0700
committerJens Axboe <axboe@fb.com>2016-03-03 14:45:53 -0700
commit5a7058450cbc8702f976d1f444974485c70cb525 (patch)
tree7a1eb1d38f696802a4af1eb69b2c513885931eaf
parent14e710fe7897e37762512d336ab081c57de579a4 (diff)
downloadlinux-5a7058450cbc8702f976d1f444974485c70cb525.tar.bz2
xen-blkback: advertise indirect segment support earlier
There's no reason to defer this until the connect phase, and in fact there are frontend implementations expecting this to be available earlier. Move it into the probe function. Acked-by: Roger Pau Monné <roger.pau@citrix.com> Signed-off-by: Jan Beulich <jbeulich@suse.com> Cc: Bob Liu <bob.liu@oracle.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
-rw-r--r--drivers/block/xen-blkback/xenbus.c13
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/block/xen-blkback/xenbus.c b/drivers/block/xen-blkback/xenbus.c
index 876763f7f13e..16e28ee880a4 100644
--- a/drivers/block/xen-blkback/xenbus.c
+++ b/drivers/block/xen-blkback/xenbus.c
@@ -618,6 +618,14 @@ static int xen_blkbk_probe(struct xenbus_device *dev,
goto fail;
}
+ err = xenbus_printf(XBT_NIL, dev->nodename,
+ "feature-max-indirect-segments", "%u",
+ MAX_INDIRECT_SEGMENTS);
+ if (err)
+ dev_warn(&dev->dev,
+ "writing %s/feature-max-indirect-segments (%d)",
+ dev->nodename, err);
+
/* Multi-queue: advertise how many queues are supported by us.*/
err = xenbus_printf(XBT_NIL, dev->nodename,
"multi-queue-max-queues", "%u", xenblk_max_queues);
@@ -849,11 +857,6 @@ again:
dev->nodename);
goto abort;
}
- err = xenbus_printf(xbt, dev->nodename, "feature-max-indirect-segments", "%u",
- MAX_INDIRECT_SEGMENTS);
- if (err)
- dev_warn(&dev->dev, "writing %s/feature-max-indirect-segments (%d)",
- dev->nodename, err);
err = xenbus_printf(xbt, dev->nodename, "sectors", "%llu",
(unsigned long long)vbd_sz(&be->blkif->vbd));