| commit | a03ef88f77af045a2eb9629b5ce774a3fb973c5e | |
| author | Kevin Wolf <kwolf@redhat.com> | |
| Mon, 20 Jun 2016 19:31:46 +0000 (20 21:31 +0200) | ||
| committer | Kevin Wolf <kwolf@redhat.com> | |
| Tue, 5 Jul 2016 14:46:27 +0000 (5 16:46 +0200) | ||
| tree | eb38df63cf3b067a09f27681fa9ef55a1988776d | treesnapshot (tar.gz zip) |
| parent | e293b7a3dff232ddf71e92ea88961b597586911e | commitdiff |
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>
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>
12 files changed: