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block: remove extra condition in bdrv_can_write_zeroes_with_unmap 

All .bdrv_co_write_zeroes callbacks nowadays work perfectly even
with backing store attached. If future new callbacks would be unable to do
that - they have a chance to block this in bdrv_get_info().

Signed-off-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Message-id: 1468503209-19498-6-git-send-email-den@openvz.org
CC: Stefan Hajnoczi <stefanha@redhat.com>
CC: Kevin Wolf <kwolf@redhat.com>
CC: Max Reitz <mreitz@redhat.com>
CC: Jeff Cody <jcody@redhat.com>
Signed-off-by: Jeff Cody <jcody@redhat.com>
This commit is contained in:
Denis V. Lunev 2016-07-14 16:33:26 +03:00 committed by Jeff Cody
parent c0b363ad43
commit 2f0342efdb
1 changed files with 1 additions and 1 deletions
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2
block.c
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@ -2837,7 +2837,7 @@ bool bdrv_can_write_zeroes_with_unmap(BlockDriverState *bs)
{
BlockDriverInfo bdi;
if (bs->backing || !(bs->open_flags & BDRV_O_UNMAP)) {
if (!(bs->open_flags & BDRV_O_UNMAP)) {
return false;
}