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

[Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>]

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?

Andrey
-- 
With the best regards,
Andrey Shinkevich