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[Qemu-devel] [PATCH v6 08/42] block: bdrv_set_backing_hd() is about bs->


From: Max Reitz
Subject: [Qemu-devel] [PATCH v6 08/42] block: bdrv_set_backing_hd() is about bs->backing
Date: Fri, 9 Aug 2019 18:13:33 +0200

bdrv_set_backing_hd() is a function that explicitly cares about the
bs->backing child.  Highlight that in its description and use
child_bs(bs->backing) instead of backing_bs(bs) to make it more obvious.

Signed-off-by: Max Reitz <address@hidden>
Reviewed-by: Vladimir Sementsov-Ogievskiy <address@hidden>
---
 block.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/block.c b/block.c
index 486c75d847..adf82efb0e 100644
--- a/block.c
+++ b/block.c
@@ -2539,7 +2539,7 @@ static bool bdrv_inherits_from_recursive(BlockDriverState 
*child,
 }
 
 /*
- * Sets the backing file link of a BDS. A new reference is created; callers
+ * Sets the bs->backing link of a BDS. A new reference is created; callers
  * which don't need their own reference any more must call bdrv_unref().
  */
 void bdrv_set_backing_hd(BlockDriverState *bs, BlockDriverState *backing_hd,
@@ -2548,7 +2548,7 @@ void bdrv_set_backing_hd(BlockDriverState *bs, 
BlockDriverState *backing_hd,
     bool update_inherits_from = bdrv_chain_contains(bs, backing_hd) &&
         bdrv_inherits_from_recursive(backing_hd, bs);
 
-    if (bdrv_is_backing_chain_frozen(bs, backing_bs(bs), errp)) {
+    if (bdrv_is_backing_chain_frozen(bs, child_bs(bs->backing), errp)) {
         return;
     }
 
-- 
2.21.0




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