qemu/include/block
Kevin Wolf b6d2e59995 block: Convert block job core to BlockBackend
This adds a new BlockBackend field to the BlockJob struct, which
coexists with the BlockDriverState while converting the individual jobs.

When creating a block job, a new BlockBackend is created on top of the
given BlockDriverState, and it is destroyed when the BlockJob ends. The
reference to the BDS is now held by the BlockBackend instead of calling
bdrv_ref/unref manually.

We have to be careful when we use bdrv_replace_in_backing_chain() in
block jobs because this changes the BDS that job->blk points to. At the
moment block jobs are too tightly coupled with their BDS, so that moving
a job to another BDS isn't easily possible; therefore, we need to just
manually undo this change afterwards.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
2016-05-25 19:04:21 +02:00
..
accounting.h Use scripts/clean-includes to drop redundant qemu/typedefs.h 2016-03-22 22:20:16 +01:00
aio.h Use scripts/clean-includes to drop redundant qemu/typedefs.h 2016-03-22 22:20:16 +01:00
block_int.h block: Fix reconfiguring graph with drained nodes 2016-05-25 19:04:10 +02:00
block.h block: Make bdrv_open() return a BDS 2016-05-25 19:04:10 +02:00
blockjob.h block: Convert block job core to BlockBackend 2016-05-25 19:04:21 +02:00
dirty-bitmap.h block: Move block dirty bitmap code to separate files 2016-03-14 17:35:05 +01:00
nbd.h include: Clean up includes 2016-02-23 12:43:05 +00:00
qapi.h block/qapi: Use blk_enable_write_cache() 2016-03-30 12:16:02 +02:00
scsi.h typofixes - v4 2015-09-11 10:45:43 +03:00
snapshot.h include: Clean up includes 2016-02-23 12:43:05 +00:00
thread-pool.h block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
throttle-groups.h block: Move I/O throttling configuration functions to BlockBackend 2016-05-19 16:45:30 +02:00
write-threshold.h Use scripts/clean-includes to drop redundant qemu/typedefs.h 2016-03-22 22:20:16 +01:00