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From: | Max Reitz |
Subject: | Re: [PATCH v5 0/6] coroutine rwlock downgrade fix, minor VDI changes |
Date: | Wed, 24 Mar 2021 15:26:00 +0100 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.0 |
On 17.03.21 19:00, Paolo Bonzini wrote:
This is a resubmit of David Edmondson's series at 20210309144015.557477-1-david.edmondson@oracle.com/">https://patchew.org/QEMU/20210309144015.557477-1-david.edmondson@oracle.com/. After closer analysis on IRC, the CoRwlock's attempt to ensure fairness turned out to be flawed. Therefore, this series reimplements CoRwlock without using a CoQueue. Tracking whether each queued coroutine is a reader/writer makes it possible to never wake a writer when only readers should be allowed and vice versa.
I’m not a maintainer for patches 3 through 6. Stefan is, though. So Stefan, can you take this series with an R-b from me on 1 and 2?
Max
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