From: BenoƮt Canet <ben...@irqsave.net> 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 <ben...@irqsave.net> --- 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