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path: root/drivers/block/xen-blkback/xenbus.c
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-rw-r--r--drivers/block/xen-blkback/xenbus.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/block/xen-blkback/xenbus.c b/drivers/block/xen-blkback/xenbus.c
index 4a4749c..7b06f94 100644
--- a/drivers/block/xen-blkback/xenbus.c
+++ b/drivers/block/xen-blkback/xenbus.c
@@ -782,6 +782,11 @@ again:
dev->nodename);
goto abort;
}
+ err = xenbus_printf(xbt, dev->nodename, "physical-sector-size", "%u",
+ bdev_physical_block_size(be->blkif->vbd.bdev));
+ if (err)
+ xenbus_dev_error(dev, err, "writing %s/physical-sector-size",
+ dev->nodename);
err = xenbus_transaction_end(xbt, 0);
if (err == -EAGAIN)
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