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block-backend: remove blk_flush_all

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We can teach Xen to drain and flush each device as it needs to, instead
of trying to flush ALL devices. This removes the last user of
blk_flush_all.

The function is therefore removed under the premise that any new uses
of blk_flush_all would be the wrong paradigm: either flush the single
device that requires flushing, or use an appropriate flush_all mechanism
from outside of the BlkBackend layer.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Acked-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
John Snow 2016-09-22 21:45:52 -04:00 • committed by Kevin Wolf
parent 22af08eacf
commit 49137bf684
4 changed files with 4 additions and 25 deletions
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4
hw/ide/piix.c
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@ -179,6 +179,10 @@ int pci_piix3_xen_ide_unplug(DeviceState *dev)
if (di != NULL && !di->media_cd) {
BlockBackend *blk = blk_by_legacy_dinfo(di);
DeviceState *ds = blk_get_attached_dev(blk);
blk_drain(blk);
blk_flush(blk);
if (ds) {
blk_detach_dev(blk, ds);
}