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[Qemu-commits] [qemu/qemu] c7c2ff: block: extend BLOCK_IO_ERROR event wi
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[Qemu-commits] [qemu/qemu] c7c2ff: block: extend BLOCK_IO_ERROR event with nospace in... |
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Mon, 15 Sep 2014 12:00:09 -0700 |
Branch: refs/heads/master
Home: https://github.com/qemu/qemu
Commit: c7c2ff0c7e5d2c04fc612d74caab19b41c52c2e9
https://github.com/qemu/qemu/commit/c7c2ff0c7e5d2c04fc612d74caab19b41c52c2e9
Author: Luiz Capitulino <address@hidden>
Date: 2014-09-10 (Wed, 10 Sep 2014)
Changed paths:
M block.c
M qapi/block-core.json
Log Message:
-----------
block: extend BLOCK_IO_ERROR event with nospace indicator
Management software, such as RHEV's vdsm, want to be able to allocate
disk space on demand. The basic use case is to start a VM with a small
disk and then the disk is enlarged when QEMU hits a ENOSPC condition.
To this end, the management software has to be notified when QEMU
encounters ENOSPC. The solution implemented by this commit is simple:
it extends the BLOCK_IO_ERROR with a 'nospace' key, which is true
when QEMU is stopped due to ENOSPC.
Note that support for querying this event is already present in
query-block by means of the 'io-status' key. Also, the new 'nospace'
BLOCK_IO_ERROR field shares the same semantics with 'io-status',
which basically means that werror= has to be set to either
'stop' or 'enospc' to enable 'nospace'.
Finally, this commit also updates the 'io-status' key doc in the
schema with a list of supported device models.
Signed-off-by: Luiz Capitulino <address@hidden>
Reviewed-by: Eric Blake <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
Commit: 0d4cc3e715f5794077895345577725539afe81eb
https://github.com/qemu/qemu/commit/0d4cc3e715f5794077895345577725539afe81eb
Author: Xiaodong Gong <address@hidden>
Date: 2014-09-10 (Wed, 10 Sep 2014)
Changed paths:
M block/vpc.c
Log Message:
-----------
Fix improper usage of cpu_to_be32 in vpc
cpu_to_be32() is wrong since vhd_type is an enum constant
(just a regular CPU-endian integer).
Signed-off-by: Xiaodong Gong <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
Commit: dbb651c46cc1d30497763f3bc0229206f7522c44
https://github.com/qemu/qemu/commit/dbb651c46cc1d30497763f3bc0229206f7522c44
Author: Markus Armbruster <address@hidden>
Date: 2014-09-10 (Wed, 10 Sep 2014)
Changed paths:
M qemu-io.c
Log Message:
-----------
qemu-io: Clean up openfile() after commit 2e40134
Commit 6db9560 split off the growable case so it can use
bdrv_file_open() instead of bdrv_open() then. Growable BDSes become
anonymous. Weird.
Commit 2e40134 folded bdrv_file_open() back into bdrv_open() with new
flag BDRV_O_PROTOCOL. We still have two bdrv_open() calls, and
growable BDSes remain anonymous.
Circle back to before commit 6db9560: just one call, not anonymous.
Signed-off-by: Markus Armbruster <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
Commit: cedccf1381c2fd6592d6322f3cd9cc6bf6621967
https://github.com/qemu/qemu/commit/cedccf1381c2fd6592d6322f3cd9cc6bf6621967
Author: Markus Armbruster <address@hidden>
Date: 2014-09-10 (Wed, 10 Sep 2014)
Changed paths:
M hw/block/xen_disk.c
Log Message:
-----------
xen_disk: Plug memory leak on error path
The Error object was leaked after failed bdrv_new(). While there,
streamline control flow a bit.
Signed-off-by: Markus Armbruster <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
Commit: 7ca9b7c03574291ec845f9d39fee0b1d26f9ce38
https://github.com/qemu/qemu/commit/7ca9b7c03574291ec845f9d39fee0b1d26f9ce38
Author: Markus Armbruster <address@hidden>
Date: 2014-09-10 (Wed, 10 Sep 2014)
Changed paths:
M hw/ide/piix.c
Log Message:
-----------
xen: Drop redundant bdrv_close() from pci_piix3_xen_ide_unplug()
drive_del() closes just fine.
Signed-off-by: Markus Armbruster <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
Commit: a31e69cf007dd2e7f6912b7839de1ebd1a41d091
https://github.com/qemu/qemu/commit/a31e69cf007dd2e7f6912b7839de1ebd1a41d091
Author: Markus Armbruster <address@hidden>
Date: 2014-09-10 (Wed, 10 Sep 2014)
Changed paths:
M include/block/thread-pool.h
M thread-pool.c
Log Message:
-----------
thread-pool: Drop unnecessary includes
Dragging block_int.h into a header is *not* nice. Fortunately, this
is the only offender.
Signed-off-by: Markus Armbruster <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
Commit: 1a7044bb62ca490b8742ac17d40bb774b7a9048e
https://github.com/qemu/qemu/commit/1a7044bb62ca490b8742ac17d40bb774b7a9048e
Author: Valentin Manea <address@hidden>
Date: 2014-09-10 (Wed, 10 Sep 2014)
Changed paths:
M hw/ide/mmio.c
Log Message:
-----------
IDE: MMIO IDE device control should be little endian
Set the IDE MMIO memory type to little endian. The ATA specs identify
words part of the control commands encoded as little endian.
While this has no impact on little endian systems, it's required for big
endian systems(eg OpenRisc).
Signed-off-by: Valentin Manea <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
Commit: 0ddd0ad96abf55acad06324b26b69a24bde23ac5
https://github.com/qemu/qemu/commit/0ddd0ad96abf55acad06324b26b69a24bde23ac5
Author: Benoît Canet <address@hidden>
Date: 2014-09-10 (Wed, 10 Sep 2014)
Changed paths:
M block.c
M block/qapi.c
M include/block/block.h
M include/block/block_int.h
Log Message:
-----------
block: Extract the BlockAcctStats structure
Extract the block accounting statistics into a structure so the block device
models can hold them in the future.
CC: Kevin Wolf <address@hidden>
CC: Stefan Hajnoczi <address@hidden>
CC: Max Reitz <address@hidden>
CC: Eric Blake <address@hidden>
Signed-off-by: Benoît Canet <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
Commit: 5e5a94b60518002e8ecc7afa78a9e7565b23e38f
https://github.com/qemu/qemu/commit/5e5a94b60518002e8ecc7afa78a9e7565b23e38f
Author: Benoît Canet <address@hidden>
Date: 2014-09-10 (Wed, 10 Sep 2014)
Changed paths:
M block.c
M block/Makefile.objs
A block/accounting.c
A include/block/accounting.h
M include/block/block.h
M include/block/block_int.h
M include/hw/virtio/virtio-blk.h
M include/sysemu/dma.h
Log Message:
-----------
block: Extract the block accounting code
The plan is to add new accounting metrics (latency, invalid requests, failed
requests, queue depth) and block.c is overpopulated so it will be better to work
in a separate module.
Moreover the long term plan is to have statistics in each of the BDS of the
graph
for metrology purpose; this means that the device model statistics must move
from
the topmost BDS to the device model.
So we need to decouple the statistic code from BlockDriverState.
This is another argument for the extraction of the code in a separate module.
CC: Kevin Wolf <address@hidden>
CC: Stefan Hajnoczi <address@hidden>
CC: Max Reitz <address@hidden>
CC: Eric Blake <address@hidden>
CC: Benoit Canet <address@hidden>
CC: Fam Zheng <address@hidden>
CC: Peter Crosthwaite <address@hidden>
CC: Paolo Bonzini <address@hidden>
Signed-off-by: Benoît Canet <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
Commit: 28298fd3d9df6685c069fa0d03398c8c585a83ea
https://github.com/qemu/qemu/commit/28298fd3d9df6685c069fa0d03398c8c585a83ea
Author: Benoît Canet <address@hidden>
Date: 2014-09-10 (Wed, 10 Sep 2014)
Changed paths:
M block/accounting.c
M block/qapi.c
M hw/block/nvme.c
M hw/block/virtio-blk.c
M hw/block/xen_disk.c
M hw/ide/ahci.c
M hw/ide/atapi.c
M hw/ide/core.c
M hw/ide/macio.c
M hw/scsi/scsi-disk.c
M include/block/accounting.h
Log Message:
-----------
block: rename BlockAcctType members to start with BLOCK_ instead of BDRV_
The middle term goal is to move the BlockAcctStats structure in the device
models.
(Capturing I/O accounting statistics in the device models is good for billing)
This patch make a small step in this direction by removing a reference to BDRV.
CC: Kevin Wolf <address@hidden>
CC: Stefan Hajnoczi <address@hidden>
CC: Keith Busch <address@hidden>
CC: Anthony Liguori <address@hidden>
CC: "Michael S. Tsirkin" <address@hidden>
CC: Paolo Bonzini <address@hidden>
CC: John Snow <address@hidden>
CC: Richard Henderson <address@hidden>
CC: Markus Armbruster <address@hidden>
CC: Alexander Graf <address@hidden>i
Signed-off-by: Benoît Canet <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
Commit: 5366d0c8bc2a8bb7a4e58e75c7e457e86d3d56f6
https://github.com/qemu/qemu/commit/5366d0c8bc2a8bb7a4e58e75c7e457e86d3d56f6
Author: Benoît Canet <address@hidden>
Date: 2014-09-10 (Wed, 10 Sep 2014)
Changed paths:
M block.c
M block/accounting.c
M dma-helpers.c
M hw/block/nvme.c
M hw/block/virtio-blk.c
M hw/block/xen_disk.c
M hw/ide/ahci.c
M hw/ide/atapi.c
M hw/ide/core.c
M hw/ide/macio.c
M hw/scsi/scsi-disk.c
M include/block/accounting.h
M include/block/block.h
Log Message:
-----------
block: Make the block accounting functions operate on BlockAcctStats
This is the next step for decoupling block accounting functions from
BlockDriverState.
In a future commit the BlockAcctStats structure will be moved from
BlockDriverState to the device models structures.
Note that bdrv_get_stats was introduced so device models can retrieve the
BlockAcctStats structure of a BlockDriverState without being aware of it's
layout.
This function should go away when BlockAcctStats will be embedded in the device
models structures.
CC: Kevin Wolf <address@hidden>
CC: Stefan Hajnoczi <address@hidden>
CC: Keith Busch <address@hidden>
CC: Anthony Liguori <address@hidden>
CC: "Michael S. Tsirkin" <address@hidden>
CC: Paolo Bonzini <address@hidden>
CC: Eric Blake <address@hidden>
CC: Peter Maydell <address@hidden>
CC: Michael Tokarev <address@hidden>
CC: John Snow <address@hidden>
CC: Markus Armbruster <address@hidden>
CC: Alexander Graf <address@hidden>
CC: Max Reitz <address@hidden>
Signed-off-by: Benoît Canet <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
Commit: 94c80a438c85f2c19698547fbb115ea46d80c5f1
https://github.com/qemu/qemu/commit/94c80a438c85f2c19698547fbb115ea46d80c5f1
Author: Chrysostomos Nanakos <address@hidden>
Date: 2014-09-10 (Wed, 10 Sep 2014)
Changed paths:
M block/archipelago.c
Log Message:
-----------
block/archipelago: Implement bdrv_truncate()
Signed-off-by: Chrysostomos Nanakos <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
Commit: 466c80f21fa2a69eb5cff8048b824c4812179b8c
https://github.com/qemu/qemu/commit/466c80f21fa2a69eb5cff8048b824c4812179b8c
Author: Chrysostomos Nanakos <address@hidden>
Date: 2014-09-10 (Wed, 10 Sep 2014)
Changed paths:
M tests/qemu-iotests/025
Log Message:
-----------
qemu-iotests: Run 025 for Archipelago block driver
Run resize grow test to ensure that existing data
is not lost during grow and new space is zeroed.
Signed-off-by: Chrysostomos Nanakos <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
Commit: 745a9bb9cdcdcc50219d14704477c5cd678c4a7e
https://github.com/qemu/qemu/commit/745a9bb9cdcdcc50219d14704477c5cd678c4a7e
Author: Stefan Hajnoczi <address@hidden>
Date: 2014-09-11 (Thu, 11 Sep 2014)
Changed paths:
M hw/block/dataplane/virtio-blk.c
Log Message:
-----------
dataplane: fix virtio_blk_data_plane_create() op blocker error path
Commit 3718d8ab65f68de2acccbe6a315907805f54e3cc ("block: Replace in_use
with operation blocker") broke the error path because it consumed
local_err instead of propagating it.
The caller has no way to know that the function failed. This caused
virtio-blk to start "successfully" even though there was a fatal
dataplane error.
Steps to reproduce:
$ qemu-system-x86_64 -enable-kvm -object iothread,id=iothread0 \
-drive if=none,id=drive0,file=a.img \
(qemu) drive_mirror drive0 /tmp/foo.img
(qemu) device_add virtio-blk-pci,iothread=iothread0,drive=drive0
Expected result:
Since the mirror block job is using drive0 it is not possible to start
virtio-blk data-plane.
device_add fails and the PCI adapter is not added.
Actual result:
device_add completes and the PCI adapter is added.
Cc: Fam Zheng <address@hidden>
Signed-off-by: Stefan Hajnoczi <address@hidden>
Reviewed-by: Eric Blake <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
Commit: 624ff5736ef9245bb8070400ccaf65857b6d1c38
https://github.com/qemu/qemu/commit/624ff5736ef9245bb8070400ccaf65857b6d1c38
Author: Luiz Capitulino <address@hidden>
Date: 2014-09-11 (Thu, 11 Sep 2014)
Changed paths:
M block.c
M qapi/block-core.json
Log Message:
-----------
block: extend BLOCK_IO_ERROR with reason string
BLOCK_IO_ERROR events are logged by libvirt, which helps with
post mortem analysis of guests. However, one information that
we miss today is a human readable string describing the cause
of the I/O error.
This commit adds that string it to BLOCK_IO_ERROR. Note that
this string is a debugging aid for humans, meaning that it
should not parsed by applications.
Signed-off-by: Luiz Capitulino <address@hidden>
Reviewed-by: Eric Blake <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
Commit: 48f364dd0ba8d6323ee9ac2b35996eef667bac39
https://github.com/qemu/qemu/commit/48f364dd0ba8d6323ee9ac2b35996eef667bac39
Author: Markus Armbruster <address@hidden>
Date: 2014-09-11 (Thu, 11 Sep 2014)
Changed paths:
M blockdev.c
Log Message:
-----------
blockdev: Refuse to drive_del something added with blockdev-add
For some device models, the guest can prevent unplug. Some users need a
way to forcibly revoke device model access to the block backend then, so
the underlying images can be safely used for something else.
drive_del lets you do that. Unfortunately, it conflates revoking access
with destroying the backend.
Commit 9063f81 made drive_del immediately destroy the root BDS. Nice:
the device name becomes available for reuse immediately. Not so nice:
the device model's pointer to the root BDS dangles, and we're prone to
crash when the memory gets reused.
Commit d22b2f4 fixed that by hiding the root BDS instead of destroying
it. Destruction only happens on unplug. "Hiding" means removing it
from bdrv_states and graph_bdrv_states; see bdrv_make_anon().
This "destroy on revoke" is a misfeature we don't want to carry
forward to blockdev-add, just like "destroy on unplug" (commit
2d246f0). So make drive_del fail on anything added with blockdev-add.
We'll add separate QMP commands to revoke device model access and to
destroy backends.
Signed-off-by: Markus Armbruster <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
Commit: be2bfb9dbde59de27684623b9d8261262c5ad076
https://github.com/qemu/qemu/commit/be2bfb9dbde59de27684623b9d8261262c5ad076
Author: Stratos Psomadakis <address@hidden>
Date: 2014-09-12 (Fri, 12 Sep 2014)
Changed paths:
M tests/qemu-iotests/socket_scm_helper.c
Log Message:
-----------
iotests: Send the correct fd in socket_scm_helper
Make sure to pass the correct fd via SCM_RIGHTS in socket_scm_helper.c
(i.e. fd_to_send, not socket-fd).
Signed-off-by: Stratos Psomadakis <address@hidden>
Signed-off-by: Dimitris Aragiorgis <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
Commit: c2eb918e3299f930fd0d0ae48d002cf2599de250
https://github.com/qemu/qemu/commit/c2eb918e3299f930fd0d0ae48d002cf2599de250
Author: Hu Tao <address@hidden>
Date: 2014-09-12 (Fri, 12 Sep 2014)
Changed paths:
M block/archipelago.c
M block/cow.c
M block/gluster.c
M block/iscsi.c
M block/nfs.c
M block/qcow.c
M block/qcow2.c
M block/qed.c
M block/raw-posix.c
M block/raw-win32.c
M block/rbd.c
M block/sheepdog.c
M block/ssh.c
M block/vdi.c
M block/vhdx.c
M block/vmdk.c
M block/vpc.c
A tests/qemu-iotests/104
A tests/qemu-iotests/104.out
M tests/qemu-iotests/common.filter
M tests/qemu-iotests/group
Log Message:
-----------
block: round up file size to nearest sector
Currently the file size requested by user is rounded down to nearest
sector, causing the actual file size could be a bit less than the size
user requested. Since some formats (like qcow2) record virtual disk
size in bytes, this can make the last few bytes cannot be accessed.
This patch fixes it by rounding up file size to nearest sector so that
the actual file size is no less than the requested file size.
Signed-off-by: Hu Tao <address@hidden>
Reviewed-by: Kevin Wolf <address@hidden>
Reviewed-by: Eric Blake <address@hidden>
Reviewed-by: Max Reitz <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
Commit: 180e95265e87edcb457a9f92f844e4b08bcc60a0
https://github.com/qemu/qemu/commit/180e95265e87edcb457a9f92f844e4b08bcc60a0
Author: Hu Tao <address@hidden>
Date: 2014-09-12 (Fri, 12 Sep 2014)
Changed paths:
M block/gluster.c
M block/qcow.c
M block/qcow2.c
M block/raw-posix.c
M block/raw-win32.c
Log Message:
-----------
block: don't convert file size to sector size
and avoid converting it back later.
Signed-off-by: Hu Tao <address@hidden>
Reviewed-by: Max Reitz <address@hidden>
Reviewed-by: Benoît Canet <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
Commit: ffeaac9b4e23a3033e8120cc34bacadc09487f1b
https://github.com/qemu/qemu/commit/ffeaac9b4e23a3033e8120cc34bacadc09487f1b
Author: Hu Tao <address@hidden>
Date: 2014-09-12 (Fri, 12 Sep 2014)
Changed paths:
M block/qcow2.c
M qapi/block-core.json
M tests/qemu-iotests/049.out
Log Message:
-----------
qapi: introduce PreallocMode and new PreallocModes full and falloc.
This patch prepares for the subsequent patches.
Signed-off-by: Hu Tao <address@hidden>
Reviewed-by: Max Reitz <address@hidden>
Reviewed-by: Kevin Wolf <address@hidden>
Reviewed-by: Eric Blake <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
Commit: 06247428be8037b3739280f82cb29efe8397695f
https://github.com/qemu/qemu/commit/06247428be8037b3739280f82cb29efe8397695f
Author: Hu Tao <address@hidden>
Date: 2014-09-12 (Fri, 12 Sep 2014)
Changed paths:
M block/raw-posix.c
M qemu-doc.texi
M qemu-img.texi
Log Message:
-----------
raw-posix: Add falloc and full preallocation option
This patch adds a new option preallocation for raw format, and implements
falloc and full preallocation.
Signed-off-by: Hu Tao <address@hidden>
Reviewed-by: Max Reitz <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
Commit: 0e4271b711a8ea766d29824c844e268b91ac3ae5
https://github.com/qemu/qemu/commit/0e4271b711a8ea766d29824c844e268b91ac3ae5
Author: Hu Tao <address@hidden>
Date: 2014-09-12 (Fri, 12 Sep 2014)
Changed paths:
M block/qcow2.c
M qemu-doc.texi
M qemu-img.texi
M tests/qemu-iotests/082.out
Log Message:
-----------
qcow2: Add falloc and full preallocation option
preallocation=falloc allocates disk space by posix_fallocate(),
preallocation=full allocates disk space by writing zeros to disk.
Both modes imply preallocation=metadata.
Signed-off-by: Hu Tao <address@hidden>
Reviewed-by: Max Reitz <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
Commit: f2bcdc8de018d33ecf93da7a94f327956ecf76ea
https://github.com/qemu/qemu/commit/f2bcdc8de018d33ecf93da7a94f327956ecf76ea
Author: Peter Maydell <address@hidden>
Date: 2014-09-15 (Mon, 15 Sep 2014)
Changed paths:
M block.c
M block/Makefile.objs
A block/accounting.c
M block/archipelago.c
M block/cow.c
M block/gluster.c
M block/iscsi.c
M block/nfs.c
M block/qapi.c
M block/qcow.c
M block/qcow2.c
M block/qed.c
M block/raw-posix.c
M block/raw-win32.c
M block/rbd.c
M block/sheepdog.c
M block/ssh.c
M block/vdi.c
M block/vhdx.c
M block/vmdk.c
M block/vpc.c
M blockdev.c
M dma-helpers.c
M hw/block/dataplane/virtio-blk.c
M hw/block/nvme.c
M hw/block/virtio-blk.c
M hw/block/xen_disk.c
M hw/ide/ahci.c
M hw/ide/atapi.c
M hw/ide/core.c
M hw/ide/macio.c
M hw/ide/mmio.c
M hw/ide/piix.c
M hw/scsi/scsi-disk.c
A include/block/accounting.h
M include/block/block.h
M include/block/block_int.h
M include/block/thread-pool.h
M include/hw/virtio/virtio-blk.h
M include/sysemu/dma.h
M qapi/block-core.json
M qemu-doc.texi
M qemu-img.texi
M qemu-io.c
M tests/qemu-iotests/025
M tests/qemu-iotests/049.out
M tests/qemu-iotests/082.out
A tests/qemu-iotests/104
A tests/qemu-iotests/104.out
M tests/qemu-iotests/common.filter
M tests/qemu-iotests/group
M tests/qemu-iotests/socket_scm_helper.c
M thread-pool.c
Log Message:
-----------
Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging
Block patches
# gpg: Signature made Fri 12 Sep 2014 16:09:43 BST using RSA key ID C88F2FD6
# gpg: Good signature from "Kevin Wolf <address@hidden>"
* remotes/kevin/tags/for-upstream: (22 commits)
qcow2: Add falloc and full preallocation option
raw-posix: Add falloc and full preallocation option
qapi: introduce PreallocMode and new PreallocModes full and falloc.
block: don't convert file size to sector size
block: round up file size to nearest sector
iotests: Send the correct fd in socket_scm_helper
blockdev: Refuse to drive_del something added with blockdev-add
block: extend BLOCK_IO_ERROR with reason string
dataplane: fix virtio_blk_data_plane_create() op blocker error path
qemu-iotests: Run 025 for Archipelago block driver
block/archipelago: Implement bdrv_truncate()
block: Make the block accounting functions operate on BlockAcctStats
block: rename BlockAcctType members to start with BLOCK_ instead of BDRV_
block: Extract the block accounting code
block: Extract the BlockAcctStats structure
IDE: MMIO IDE device control should be little endian
thread-pool: Drop unnecessary includes
xen: Drop redundant bdrv_close() from pci_piix3_xen_ide_unplug()
xen_disk: Plug memory leak on error path
qemu-io: Clean up openfile() after commit 2e40134
...
Signed-off-by: Peter Maydell <address@hidden>
Compare: https://github.com/qemu/qemu/compare/16ab5046c4a6...f2bcdc8de018
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