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[PULL 06/24] block: introduce bdrv_remove_file_or_backing_child()
From: |
Kevin Wolf |
Subject: |
[PULL 06/24] block: introduce bdrv_remove_file_or_backing_child() |
Date: |
Wed, 30 Jun 2021 18:01:48 +0200 |
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
To be used for reopen in future commit.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210610120537.196183-2-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
block.c | 24 +++++++++++++++++-------
1 file changed, 17 insertions(+), 7 deletions(-)
diff --git a/block.c b/block.c
index 9518f0e087..7eceef0afa 100644
--- a/block.c
+++ b/block.c
@@ -4795,17 +4795,16 @@ static TransactionActionDrv
bdrv_remove_filter_or_cow_child_drv = {
};
/*
- * A function to remove backing-chain child of @bs if exists: cow child for
- * format nodes (always .backing) and filter child for filters (may be .file or
- * .backing)
- *
+ * A function to remove backing or file child of @bs.
* Function doesn't update permissions, caller is responsible for this.
*/
-static void bdrv_remove_filter_or_cow_child(BlockDriverState *bs,
- Transaction *tran)
+static void bdrv_remove_file_or_backing_child(BlockDriverState *bs,
+ BdrvChild *child,
+ Transaction *tran)
{
BdrvRemoveFilterOrCowChild *s;
- BdrvChild *child = bdrv_filter_or_cow_child(bs);
+
+ assert(child == bs->backing || child == bs->file);
if (!child) {
return;
@@ -4830,6 +4829,17 @@ static void
bdrv_remove_filter_or_cow_child(BlockDriverState *bs,
}
}
+/*
+ * A function to remove backing-chain child of @bs if exists: cow child for
+ * format nodes (always .backing) and filter child for filters (may be .file or
+ * .backing)
+ */
+static void bdrv_remove_filter_or_cow_child(BlockDriverState *bs,
+ Transaction *tran)
+{
+ bdrv_remove_file_or_backing_child(bs, bdrv_filter_or_cow_child(bs), tran);
+}
+
static int bdrv_replace_node_noperm(BlockDriverState *from,
BlockDriverState *to,
bool auto_skip, Transaction *tran,
--
2.31.1
- [PULL 00/24] Block layer patches, Kevin Wolf, 2021/06/30
- [PULL 02/24] block: Move read-only check during truncation earlier, Kevin Wolf, 2021/06/30
- [PULL 01/24] Prevent compiler warning on block.c, Kevin Wolf, 2021/06/30
- [PULL 03/24] block: BDRV_O_NO_IO for backing file on creation, Kevin Wolf, 2021/06/30
- [PULL 07/24] block: introduce bdrv_set_file_or_backing_noperm(), Kevin Wolf, 2021/06/30
- [PULL 06/24] block: introduce bdrv_remove_file_or_backing_child(),
Kevin Wolf <=
- [PULL 08/24] block: bdrv_reopen_parse_backing(): don't check aio context, Kevin Wolf, 2021/06/30
- [PULL 10/24] block: bdrv_reopen_parse_backing(): simplify handling implicit filters, Kevin Wolf, 2021/06/30
- [PULL 09/24] block: bdrv_reopen_parse_backing(): don't check frozen child, Kevin Wolf, 2021/06/30
- [PULL 12/24] block: BDRVReopenState: drop replace_backing_bs field, Kevin Wolf, 2021/06/30
- [PULL 04/24] block: rename bdrv_replace_child to bdrv_replace_child_tran, Kevin Wolf, 2021/06/30
- [PULL 13/24] block: Allow changing bs->file on reopen, Kevin Wolf, 2021/06/30
- [PULL 14/24] iotests: Test replacing files with x-blockdev-reopen, Kevin Wolf, 2021/06/30
- [PULL 17/24] block/ssh: add support for sha256 host key fingerprints, Kevin Wolf, 2021/06/30
- [PULL 21/24] vhost-user-blk: Add Error parameter to vhost_user_blk_start(), Kevin Wolf, 2021/06/30
- [PULL 15/24] introduce QEMU_AUTO_VFREE, Kevin Wolf, 2021/06/30