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[Qemu-devel] [PATCH 1/3] block: Add bdrv_have_block_jobs() so migration
From: |
benoit . canet |
Subject: |
[Qemu-devel] [PATCH 1/3] block: Add bdrv_have_block_jobs() so migration code abort if needed. |
Date: |
Fri, 20 Jul 2012 21:32:35 +0200 |
From: Benoît Canet <address@hidden>
qmp_migrate() will be able to check if some block jobs are
running using bdrv_have_block_jobs() and abort safely if needed.
Signed-off-by: Benoit Canet <address@hidden>
---
block.c | 14 ++++++++++++++
block.h | 2 ++
2 files changed, 16 insertions(+)
diff --git a/block.c b/block.c
index ce7eb8f..2b7b999 100644
--- a/block.c
+++ b/block.c
@@ -4027,6 +4027,20 @@ out:
return ret;
}
+bool bdrv_have_block_jobs(void)
+{
+ BlockDriverState *bs;
+
+ QTAILQ_FOREACH(bs, &bdrv_states, list) {
+ if (bs->job || bdrv_in_use(bs)) {
+ return true;
+ }
+ bdrv_close(bs);
+ }
+
+ return false;
+}
+
void *block_job_create(const BlockJobType *job_type, BlockDriverState *bs,
int64_t speed, BlockDriverCompletionFunc *cb,
void *opaque, Error **errp)
diff --git a/block.h b/block.h
index c89590d..1335a2b 100644
--- a/block.h
+++ b/block.h
@@ -337,6 +337,8 @@ void bdrv_disable_copy_on_read(BlockDriverState *bs);
void bdrv_set_in_use(BlockDriverState *bs, int in_use);
int bdrv_in_use(BlockDriverState *bs);
+bool bdrv_have_block_jobs(void);
+
enum BlockAcctType {
BDRV_ACCT_READ,
BDRV_ACCT_WRITE,
--
1.7.9.5