From 53ec73e264f481b79b52efcadc9ceb8f8996975c Mon Sep 17 00:00:00 2001 From: Fam Zheng Date: Fri, 29 May 2015 18:53:14 +0800 Subject: [PATCH] block: Use bdrv_drain to replace uncessary bdrv_drain_all There callers work on a single BlockDriverState subtree, where using bdrv_drain() is more accurate. Signed-off-by: Fam Zheng Signed-off-by: Stefan Hajnoczi --- block.c | 6 +++--- block/snapshot.c | 2 +- migration/block.c | 2 +- 3 files changed, 5 insertions(+), 5 deletions(-) diff --git a/block.c b/block.c index 42eb8e3610..5e80336e9f 100644 --- a/block.c +++ b/block.c @@ -1841,9 +1841,9 @@ void bdrv_close(BlockDriverState *bs) if (bs->job) { block_job_cancel_sync(bs->job); } - bdrv_drain_all(); /* complete I/O */ + bdrv_drain(bs); /* complete I/O */ bdrv_flush(bs); - bdrv_drain_all(); /* in case flush left pending I/O */ + bdrv_drain(bs); /* in case flush left pending I/O */ notifier_list_notify(&bs->close_notifiers, bs); if (bs->drv) { @@ -3906,7 +3906,7 @@ void bdrv_attach_aio_context(BlockDriverState *bs, void bdrv_set_aio_context(BlockDriverState *bs, AioContext *new_context) { - bdrv_drain_all(); /* ensure there are no in-flight requests */ + bdrv_drain(bs); /* ensure there are no in-flight requests */ bdrv_detach_aio_context(bs); diff --git a/block/snapshot.c b/block/snapshot.c index 19395ae014..49e143e991 100644 --- a/block/snapshot.c +++ b/block/snapshot.c @@ -239,7 +239,7 @@ int bdrv_snapshot_delete(BlockDriverState *bs, } /* drain all pending i/o before deleting snapshot */ - bdrv_drain_all(); + bdrv_drain(bs); if (drv->bdrv_snapshot_delete) { return drv->bdrv_snapshot_delete(bs, snapshot_id, name, errp); diff --git a/migration/block.c b/migration/block.c index ddb59ccf87..ed865ed23b 100644 --- a/migration/block.c +++ b/migration/block.c @@ -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(); }