[PATCH] qapi/block: fix nbd-server-add spec

[Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>]

"NAME" here may be interpreted like it should match @name, which is
export name. But it was never mentioned in such way. Make it obvious,
that actual "<dirty-bitmap-export-name>" (see docs/interop/nbd.txt)
will match @bitmap parameter.

Fixes: 5fcbeb06812685a2
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
---

Hi all.

This patch follows discussion on Nir's patch
 [PATCH] block: nbd: Fix dirty bitmap context name
 ( https://lists.gnu.org/archive/html/qemu-devel/2019-12/msg04309.html )

Let's just fix qapi spec now. 

 qapi/block.json | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/qapi/block.json b/qapi/block.json
index 145c268bb6..8042ef78f0 100644
--- a/qapi/block.json
+++ b/qapi/block.json
@@ -255,7 +255,8 @@
 
 # @bitmap: Also export the dirty bitmap reachable from @device, so the
 #          NBD client can use NBD_OPT_SET_META_CONTEXT with
-#          "qemu:dirty-bitmap:NAME" to inspect the bitmap. (since 4.0)
+#          "qemu:dirty-bitmap:BITMAP" to inspect the bitmap (BITMAP here
+#          matches @bitmap parameter). (since 4.0)
 #
 # Returns: error if the server is not running, or export with the same name
 #          already exists.
-- 
2.21.0