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block: Use bdrv_drain to replace uncessary bdrv_drain_all

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There callers work on a single BlockDriverState subtree, where using
bdrv_drain() is more accurate.

Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Fam Zheng 2015-05-29 18:53:14 +08:00 • committed by Stefan Hajnoczi
parent c2e0dbbfd7
commit 53ec73e264
3 changed files with 5 additions and 5 deletions
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2
migration/block.c
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@ -457,7 +457,7 @@ static int mig_save_device_dirty(QEMUFile *f, BlkMigDevState *bmds,
blk_mig_lock();
if (bmds_aio_inflight(bmds, sector)) {
blk_mig_unlock();
bdrv_drain_all();
bdrv_drain(bmds->bs);
} else {
blk_mig_unlock();
}