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| author | Markus Armbruster <armbru@redhat.com> | 2014-10-07 13:59:05 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2014-10-20 13:41:26 +0200 |
| commit | 7e7d56d9e05b340290669442cfa05f5869204572 (patch) | |
| tree | 5ac3934eadc67544a188e1f368357bfe16c6b81c /hw | |
| parent | 26f54e9a3cfe62fca61baf83a06b269935d6b9a4 (diff) | |
| download | qemu-7e7d56d9e05b340290669442cfa05f5869204572.zip qemu-7e7d56d9e05b340290669442cfa05f5869204572.tar.gz qemu-7e7d56d9e05b340290669442cfa05f5869204572.tar.bz2 | |
block: Connect BlockBackend to BlockDriverState
Convenience function blk_new_with_bs() creates a BlockBackend with its
BlockDriverState. Callers have to unref both. The commit after next
will relieve them of the need to unref the BlockDriverState.
Complication: due to the silly way drive_del works, we need a way to
hide a BlockBackend, just like bdrv_make_anon(). To emphasize its
"special" status, give the function a suitably off-putting name:
blk_hide_on_behalf_of_do_drive_del(). Unfortunately, hiding turns the
BlockBackend's name into the empty string. Can't avoid that without
breaking the blk->bs->device_name equals blk->name invariant.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/block/xen_disk.c | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/hw/block/xen_disk.c b/hw/block/xen_disk.c index 265cf13..0022083 100644 --- a/hw/block/xen_disk.c +++ b/hw/block/xen_disk.c @@ -860,15 +860,11 @@ static int blk_connect(struct XenDevice *xendev) /* setup via xenbus -> create new block driver instance */ xen_be_printf(&blkdev->xendev, 2, "create new bdrv (xenbus setup)\n"); - blk = blk_new(blkdev->dev, NULL); + blk = blk_new_with_bs(blkdev->dev, NULL); if (!blk) { return -1; } - blkdev->bs = bdrv_new_root(blkdev->dev, NULL); - if (!blkdev->bs) { - blk_unref(blk); - return -1; - } + blkdev->bs = blk_bs(blk); drv = bdrv_find_whitelisted_format(blkdev->fileproto, readonly); if (bdrv_open(&blkdev->bs, blkdev->filename, NULL, NULL, qflags, |