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[Qemu-devel] [PATCH V2 1/3] block: Add bdrv_are_busy()
From: |
benoit . canet |
Subject: |
[Qemu-devel] [PATCH V2 1/3] block: Add bdrv_are_busy() |
Date: |
Mon, 23 Jul 2012 13:23:33 +0200 |
From: BenoƮt Canet <address@hidden>
bdrv_are_busy will be used to check if any of the bs are in use
or if one of them have a running block job.
The first user will be qmp_migrate().
Signed-off-by: Benoit Canet <address@hidden>
---
block.c | 13 +++++++++++++
block.h | 2 ++
2 files changed, 15 insertions(+)
diff --git a/block.c b/block.c
index ce7eb8f..bc8f160 100644
--- a/block.c
+++ b/block.c
@@ -4027,6 +4027,19 @@ out:
return ret;
}
+int bdrv_are_busy(void)
+{
+ BlockDriverState *bs;
+
+ QTAILQ_FOREACH(bs, &bdrv_states, list) {
+ if (bs->job || bdrv_in_use(bs)) {
+ return -EBUSY;
+ }
+ }
+
+ return 0;
+}
+
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..0a3de2f 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);
+int bdrv_are_busy(void);
+
enum BlockAcctType {
BDRV_ACCT_READ,
BDRV_ACCT_WRITE,
--
1.7.9.5