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qemu-e2k/block
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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
..
Makefile.objs replay: introduce block devices record/replay 2016-03-30 12:15:57 +02:00
accounting.c block: Clean up includes 2016-01-20 13:36:23 +01:00
archipelago.c util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
backup.c blockjob: Don't touch BDS iostatus 2016-05-19 16:45:31 +02:00
blkdebug.c util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
blkreplay.c replay: introduce block devices record/replay 2016-03-30 12:15:57 +02:00
blkverify.c block: Propagate AioContext change to all children 2016-05-19 16:45:31 +02:00
block-backend.c block: Default to enabled write cache in blk_new() 2016-05-25 19:04:21 +02:00
bochs.c qemu-common: stop including qemu/bswap.h from qemu-common.h 2016-05-19 16:42:28 +02:00
cloop.c qemu-common: stop including qemu/bswap.h from qemu-common.h 2016-05-19 16:42:28 +02:00
commit.c blockjob: Don't touch BDS iostatus 2016-05-19 16:45:31 +02:00
crypto.c Block layer patches 2016-05-12 16:33:40 +01:00
curl.c block: always compile-check debug prints 2016-05-12 15:22:08 +02:00
dirty-bitmap.c include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
dmg.c dmg: Implement .bdrv_co_preadv() interface 2016-05-12 15:22:08 +02:00
gluster.c block/gluster: prevent data loss after i/o error 2016-04-19 12:24:59 -04:00
io.c block: Make bdrv_drain() use bdrv_drained_begin/end() 2016-05-25 19:04:10 +02:00
iscsi.c iscsi: pass SCSI status back for SG_IO 2016-05-23 16:53:46 +02:00
linux-aio.c linux-aio: make it more type safe 2016-05-12 15:22:07 +02:00
mirror.c block: Convert block job core to BlockBackend 2016-05-25 19:04:21 +02:00
nbd-client.c nbd: Simplify client FUA handling 2016-05-12 15:22:09 +02:00
nbd-client.h nbd: Simplify client FUA handling 2016-05-12 15:22:09 +02:00
nbd.c nbd: Simplify client FUA handling 2016-05-12 15:22:09 +02:00
nfs.c block/nfs: add missing #include "qemu/cutils.h" 2016-03-30 16:50:39 -04:00
null.c block/null-{co,aio}: Implement get_block_status() 2016-03-30 12:16:04 +02:00
parallels.c block: Rename blk_write_zeroes() 2016-05-25 19:04:21 +02:00
qapi.c block: Don't return throttling info in query-named-block-nodes 2016-05-19 16:45:31 +02:00
qcow.c qemu-common: stop including qemu/bswap.h from qemu-common.h 2016-05-19 16:42:28 +02:00
qcow2-cache.c block: Clean up includes 2016-01-20 13:36:23 +01:00
qcow2-cluster.c qemu-common: stop including qemu/bswap.h from qemu-common.h 2016-05-19 16:42:28 +02:00
qcow2-refcount.c qemu-common: stop including qemu/bswap.h from qemu-common.h 2016-05-19 16:42:28 +02:00
qcow2-snapshot.c qemu-common: stop including qemu/bswap.h from qemu-common.h 2016-05-19 16:42:28 +02:00
qcow2.c Block layer patches 2016-05-19 16:54:12 +01:00
qcow2.h qcow2: Add function for refcount order amendment 2015-12-18 14:34:43 +01:00
qed-check.c block: Clean up includes 2016-01-20 13:36:23 +01:00
qed-cluster.c block: Clean up includes 2016-01-20 13:36:23 +01:00
qed-gencb.c block: Clean up includes 2016-01-20 13:36:23 +01:00
qed-l2-cache.c block: Clean up includes 2016-01-20 13:36:23 +01:00
qed-table.c qemu-common: stop including qemu/bswap.h from qemu-common.h 2016-05-19 16:42:28 +02:00
qed.c qemu-common: stop including qemu/bswap.h from qemu-common.h 2016-05-19 16:42:28 +02:00
qed.h util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
quorum.c block: Propagate AioContext change to all children 2016-05-19 16:45:31 +02:00
raw-aio.h linux-aio: make it more type safe 2016-05-12 15:22:07 +02:00
raw-posix.c block: Honor BDRV_REQ_FUA during write_zeroes 2016-05-12 15:22:09 +02:00
raw-win32.c util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
raw_bsd.c block: Honor BDRV_REQ_FUA during write_zeroes 2016-05-12 15:22:09 +02:00
rbd.c util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
sheepdog.c block: Allow BDRV_REQ_FUA through blk_pwrite() 2016-05-12 15:22:08 +02:00
snapshot.c block: Fix bdrv_next() memory leak 2016-05-25 19:04:10 +02:00
ssh.c include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
stream.c blockjob: Don't touch BDS iostatus 2016-05-19 16:45:31 +02:00
throttle-groups.c block: Move I/O throttling configuration functions to BlockBackend 2016-05-19 16:45:30 +02:00
vdi.c qemu-common: stop including qemu/bswap.h from qemu-common.h 2016-05-19 16:42:28 +02:00
vhdx-endian.c qemu-common: stop including qemu/bswap.h from qemu-common.h 2016-05-19 16:42:28 +02:00
vhdx-log.c qemu-common: stop including qemu/bswap.h from qemu-common.h 2016-05-19 16:42:28 +02:00
vhdx.c qemu-common: stop including qemu/bswap.h from qemu-common.h 2016-05-19 16:42:28 +02:00
vhdx.h block: vhdx - update PAYLOAD_BLOCK_UNMAPPED value to match 1.00 spec 2014-12-12 15:42:22 +00:00
vmdk.c Block layer patches 2016-05-19 16:54:12 +01:00
vpc.c qemu-common: stop including qemu/bswap.h from qemu-common.h 2016-05-19 16:42:28 +02:00
vvfat.c block: Make bdrv_open() return a BDS 2016-05-25 19:04:10 +02:00
win32-aio.c block: Clean up includes 2016-01-20 13:36:23 +01:00
write-threshold.c block: Clean up includes 2016-01-20 13:36:23 +01:00