Re: [Qemu-devel] [PATCH v7 0/3] block/stream: get rid of the base

[Max Reitz <mreitz@redhat.com>]

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On 25.06.19 16:40, Andrey Shinkevich wrote:
> 
> 
> On 19/06/2019 22:29, Max Reitz wrote:
>> On 29.05.19 19:56, Andrey Shinkevich wrote:
>>> This series introduces a bottom intermediate node that eliminates the
>>> dependency on the base that may change while stream job is running.
>>> It happens when stream/commit parallel jobs are running on the same
>>> backing chain. The base node of the stream job may be a top node of
>>> the parallel commit job and can change before the stream job is
>>> completed. We avoid that dependency by introducing the bottom node.
>>>
>>> v7: [resend by Andrey]
>>>    01: assert(intermediate) was inserted before the call to
>>>        bdrv_is_allocated() in the intermediate node loop of the
>>>        bdrv_is_allocated_above() as suggested by Max.
>>>    02: The change of the intermediate node loop in the stream_start() was
>>>        rolled back to its original design and the reassignment of the base
>>>        node pointer was added as Vladimir and Max suggested. The relevant
>>>        comment was amended.
>>>
>>> v6: [resend by Vladimir]
>>>    01: improve comment in block/io.c, suggested by Alberto
>>>
>>> v5: [resend by Vladimir]
>>>    01: use comment wording in block/io.c suggested by Alberto
>>>
>>> v4:
>>> trace_stream_start reverted to the base.
>>> bdrv_is_allocated_above_inclusive() deleted and the new parameter
>>> 'bool include_base' was added to the bdrv_is_allocated_above().
>>>
>>> Andrey Shinkevich (3):
>>>    block: include base when checking image chain for block allocation
>>>    block/stream: refactor stream_run: drop goto
>>>    block/stream: introduce a bottom node
>>>
>>>   block/commit.c         |  2 +-
>>>   block/io.c             | 21 +++++++++++++------
>>>   block/mirror.c         |  2 +-
>>>   block/replication.c    |  2 +-
>>>   block/stream.c         | 56 ++++++++++++++++++++++++--------------------------
>>>   include/block/block.h  |  3 ++-
>>>   tests/qemu-iotests/245 |  4 ++--
>>>   7 files changed, 49 insertions(+), 41 deletions(-)
>>
>> Reviewed-by: Max Reitz <mreitz@redhat.com>
>>
>> Just needs some simple changes to patch 1 to rebase it on 863cc78f1b3
>> and c8bb23cbdbe.
>>
>> Max
>>
> 
> Please let us know who would take this series for pull request?

Nothing, I was just waiting for my current pull request (lingering from
last week due to a build failure because of one of the patches) to be
processed.

I suppose I won’t wait longer and just take this series now and deal
with the fallout later if there’s something else in my last week’s pull
request that needs fixing...

So: Thanks, applied to my block branch:

https://git.xanclic.moe/XanClic/qemu/commits/branch/block

Max


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