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| author | Kevin Wolf <kwolf@redhat.com> | 2015-06-17 14:55:21 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2015-10-16 15:34:29 +0200 |
| commit | 760e006384ecd5b8b8b1b91b5c85ff8fdcb3a21f (patch) | |
| tree | 506ef3c27944a2f97069327493f875a2def3d90a /block/qcow.c | |
| parent | b26e90f56ad3a494ee6337d2075f4dc55b62b3c6 (diff) | |
| download | qemu-760e006384ecd5b8b8b1b91b5c85ff8fdcb3a21f.tar.gz | |
block: Convert bs->backing_hd to BdrvChild
This is the final step in converting all of the BlockDriverState
pointers that block drivers use to BdrvChild.
After this patch, bs->children contains the full list of child nodes
that are referenced by a given BDS, and these children are only
referenced through BdrvChild, so that updating the pointer in there is
enough for changing edges in the graph.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'block/qcow.c')
| -rw-r--r-- | block/qcow.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/block/qcow.c b/block/qcow.c index 42f888c422..635085e27b 100644 --- a/block/qcow.c +++ b/block/qcow.c @@ -597,13 +597,13 @@ static coroutine_fn int qcow_co_readv(BlockDriverState *bs, int64_t sector_num, } if (!cluster_offset) { - if (bs->backing_hd) { + if (bs->backing) { /* read from the base image */ hd_iov.iov_base = (void *)buf; hd_iov.iov_len = n * 512; qemu_iovec_init_external(&hd_qiov, &hd_iov, 1); qemu_co_mutex_unlock(&s->lock); - ret = bdrv_co_readv(bs->backing_hd, sector_num, + ret = bdrv_co_readv(bs->backing->bs, sector_num, n, &hd_qiov); qemu_co_mutex_lock(&s->lock); if (ret < 0) { |