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xen-blkback: advertise indirect segment support earlier

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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 <[email protected]>
Signed-off-by: Jan Beulich <[email protected]>
Cc: Bob Liu <[email protected]>
Signed-off-by: Konrad Rzeszutek Wilk <[email protected]>
This commit is contained in:
Jan Beulich 2016-02-10 04:18:10 -07:00 • committed by Jens Axboe
commit 5a7058450c
1 changed files with 8 additions and 5 deletions
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13
drivers/block/xen-blkback/xenbus.c
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@ -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));