[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-block] [Qemu-devel] [PATCH 4/5] block/backup: Add subclassed n
|
From: |
John Snow |
|
Subject: |
Re: [Qemu-block] [Qemu-devel] [PATCH 4/5] block/backup: Add subclassed notifier |
|
Date: |
Tue, 12 Jan 2016 12:57:04 -0500 |
|
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0 |
On 01/12/2016 03:46 AM, Paolo Bonzini wrote:
>
>
> On 12/01/2016 01:36, John Snow wrote:
>> Instead of relying on peeking at bs->job, we want to explicitly get
>> a reference to the job that was involved in this notifier callback.
>>
>> Extend the Notifier to include a job pointer, and include a reference
>> to the job registering the callback. This cuts out a few more cases
>> where we have to rely on bs->job.
>>
>> Signed-off-by: John Snow <address@hidden>
>
> Why don't you just put the NotifierWithReturn inside the BackupBlockJob
> struct, and use container_of to get from NWR to BackupBlockJob?
>
> Paolo
>
That's another way (including the notifier within the job vs. including
the job within the notifier.) This one simply occurred to me first. Any
strong benefit to that method, or just a matter of style?
--js
[Qemu-block] [PATCH 1/5] block: Allow mirror_start to return job references, John Snow, 2016/01/11
[Qemu-block] [PATCH 5/5] blockjob: add Job parameter to BlockCompletionFunc, John Snow, 2016/01/11
[Qemu-block] [PATCH 3/5] block: allow backup_start to return job references, John Snow, 2016/01/11