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Re: [Qemu-block] [PATCH v7 0/3] block/stream: get rid of the base
From: |
Max Reitz |
Subject: |
Re: [Qemu-block] [PATCH v7 0/3] block/stream: get rid of the base |
Date: |
Tue, 25 Jun 2019 17:03:05 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.0 |
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 <address@hidden>
>>
>> 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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