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| author | Kevin Wolf <kwolf@redhat.com> | 2016-06-20 21:31:46 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2016-07-05 16:46:27 +0200 |
| commit | a03ef88f77af045a2eb9629b5ce774a3fb973c5e (patch) | |
| tree | eb38df63cf3b067a09f27681fa9ef55a1988776d /block/vmdk.c | |
| parent | e293b7a3dff232ddf71e92ea88961b597586911e (diff) | |
| download | qemu-a03ef88f77af045a2eb9629b5ce774a3fb973c5e.zip qemu-a03ef88f77af045a2eb9629b5ce774a3fb973c5e.tar.gz qemu-a03ef88f77af045a2eb9629b5ce774a3fb973c5e.tar.bz2 | |
block: Convert bdrv_co_preadv/pwritev to BdrvChild
This is the final patch for converting the common I/O path to take
a BdrvChild parameter instead of BlockDriverState.
The completion of this conversion means that all users that perform I/O
on an image need to actually hold a reference (in the form of BdrvChild,
possible as part of a BlockBackend) to that image. This also protects
against inconsistent use of BlockBackend vs. BlockDriverState functions
because direct use of a BlockDriverState isn't possible any more and
blk->root is private for block-backends.c.
In addition, we can now distinguish different users in the I/O path,
and the future op blockers work is going to add assertions based on
permissions stored in BdrvChild.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'block/vmdk.c')
| -rw-r--r-- | block/vmdk.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/block/vmdk.c b/block/vmdk.c index ae70b63..d73f431 100644 --- a/block/vmdk.c +++ b/block/vmdk.c @@ -1369,7 +1369,7 @@ static int vmdk_write_extent(VmdkExtent *extent, int64_t cluster_offset, } write_offset = cluster_offset + offset_in_cluster, - ret = bdrv_co_pwritev(extent->file->bs, write_offset, n_bytes, + ret = bdrv_co_pwritev(extent->file, write_offset, n_bytes, &local_qiov, 0); write_end_sector = DIV_ROUND_UP(write_offset + n_bytes, BDRV_SECTOR_SIZE); @@ -1407,7 +1407,7 @@ static int vmdk_read_extent(VmdkExtent *extent, int64_t cluster_offset, if (!extent->compressed) { - ret = bdrv_co_preadv(extent->file->bs, + ret = bdrv_co_preadv(extent->file, cluster_offset + offset_in_cluster, bytes, qiov, 0); if (ret < 0) { @@ -1497,7 +1497,7 @@ vmdk_co_preadv(BlockDriverState *bs, uint64_t offset, uint64_t bytes, qemu_iovec_reset(&local_qiov); qemu_iovec_concat(&local_qiov, qiov, bytes_done, n_bytes); - ret = bdrv_co_preadv(bs->backing->bs, offset, n_bytes, + ret = bdrv_co_preadv(bs->backing, offset, n_bytes, &local_qiov, 0); if (ret < 0) { goto fail; |