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block: Introduce parents list

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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Kevin Wolf 2015-09-17 13:18:23 +02:00
parent a2d6190048
commit d42a8a935b
2 changed files with 5 additions and 0 deletions
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2
include/block/block_int.h
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@ -339,6 +339,7 @@ struct BdrvChild {
BlockDriverState *bs;
const BdrvChildRole *role;
QLIST_ENTRY(BdrvChild) next;
QLIST_ENTRY(BdrvChild) next_parent;
};
/*
@ -445,6 +446,7 @@ struct BlockDriverState {
* parent node of this node. */
BlockDriverState *inherits_from;
QLIST_HEAD(, BdrvChild) children;
QLIST_HEAD(, BdrvChild) parents;
QDict *options;
BlockdevDetectZeroesOptions detect_zeroes;