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Re: [PATCH 0/6] block-copy: make helper APIs thread safe
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From: |
Stefan Hajnoczi |
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Subject: |
Re: [PATCH 0/6] block-copy: make helper APIs thread safe |
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Date: |
Wed, 12 May 2021 15:24:56 +0100 |
On Mon, May 10, 2021 at 10:59:35AM +0200, Emanuele Giuseppe Esposito wrote:
> This serie of patches bring thread safety to the smaller APIs used by
> block-copy, namely ratelimit, progressmeter, co-shared-resource
> and aiotask.
> The end goal is to reduce the usage of the global
> AioContexlock in block-copy, by introducing smaller granularity
> locks thus on making the block layer thread safe.
I'm not sure "global" is accurate. Block jobs can deal with arbitrary
AioContexts, not just a global AioContext. The lock is per-AioContext
rather than global. Or did I miss something?
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- Re: [PATCH 4/6] progressmeter: protect with a mutex, (continued)