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[Qemu-devel] [PATCH v3 28/44] block: Fix pending requests check in bdrv_
From: |
Kevin Wolf |
Subject: |
[Qemu-devel] [PATCH v3 28/44] block: Fix pending requests check in bdrv_append() |
Date: |
Tue, 28 Feb 2017 13:54:13 +0100 |
bdrv_append() cares about isolation of the node that it modifies, but
not about activity in some subtree below it. Instead of using the
recursive bdrv_requests_pending(), directly check bs->in_flight, which
considers only the node in question.
Signed-off-by: Kevin Wolf <address@hidden>
Reviewed-by: Max Reitz <address@hidden>
---
block.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/block.c b/block.c
index 9e538a5..5189c7c 100644
--- a/block.c
+++ b/block.c
@@ -2897,8 +2897,8 @@ static void change_parent_backing_link(BlockDriverState
*from,
*/
void bdrv_append(BlockDriverState *bs_new, BlockDriverState *bs_top)
{
- assert(!bdrv_requests_pending(bs_top));
- assert(!bdrv_requests_pending(bs_new));
+ assert(!atomic_read(&bs_top->in_flight));
+ assert(!atomic_read(&bs_new->in_flight));
bdrv_ref(bs_top);
--
1.8.3.1
- [Qemu-devel] [PATCH v3 19/44] hw/block: Introduce share-rw qdev property, (continued)
- [Qemu-devel] [PATCH v3 19/44] hw/block: Introduce share-rw qdev property, Kevin Wolf, 2017/02/28
- [Qemu-devel] [PATCH v3 23/44] block: Add BdrvChildRole.stay_at_node, Kevin Wolf, 2017/02/28
- [Qemu-devel] [PATCH v3 22/44] block: Include details on permission errors in message, Kevin Wolf, 2017/02/28
- [Qemu-devel] [PATCH v3 20/44] blockjob: Add permissions to block_job_create(), Kevin Wolf, 2017/02/28
- [Qemu-devel] [PATCH v3 26/44] commit: Use real permissions for HMP 'commit', Kevin Wolf, 2017/02/28
- [Qemu-devel] [PATCH v3 25/44] commit: Use real permissions in commit block job, Kevin Wolf, 2017/02/28
- [Qemu-devel] [PATCH v3 24/44] blockjob: Add permissions to block_job_add_bdrv(), Kevin Wolf, 2017/02/28
- [Qemu-devel] [PATCH v3 27/44] backup: Use real permissions in backup block job, Kevin Wolf, 2017/02/28
- [Qemu-devel] [PATCH v3 28/44] block: Fix pending requests check in bdrv_append(),
Kevin Wolf <=
- [Qemu-devel] [PATCH v3 29/44] block: BdrvChildRole.attach/detach() callbacks, Kevin Wolf, 2017/02/28
- [Qemu-devel] [PATCH v3 30/44] block: Allow backing file links in change_parent_backing_link(), Kevin Wolf, 2017/02/28
- [Qemu-devel] [PATCH v3 31/44] blockjob: Factor out block_job_remove_all_bdrv(), Kevin Wolf, 2017/02/28
- [Qemu-devel] [PATCH v3 33/44] stream: Use real permissions in streaming block job, Kevin Wolf, 2017/02/28
- [Qemu-devel] [PATCH v3 32/44] mirror: Use real permissions in mirror/active commit block job, Kevin Wolf, 2017/02/28
- [Qemu-devel] [PATCH v3 35/44] commit: Add filter-node-name to block-commit, Kevin Wolf, 2017/02/28
- [Qemu-devel] [PATCH v3 36/44] hmp: Request permissions in qemu-io, Kevin Wolf, 2017/02/28