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Groups > linux.kernel > #1696986

Re: [PATCH net] Revert "vhost: cache used event for better performance"

From Christian Borntraeger <borntraeger@de.ibm.com>
Newsgroups linux.kernel
Subject Re: [PATCH net] Revert "vhost: cache used event for better performance"
Date 2017-07-26 13:00 +0200
Message-ID <u7scO-7G7-5@gated-at.bofh.it> (permalink)
References <u7pyh-6dA-1@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On 07/26/2017 10:03 AM, Jason Wang wrote:
> This reverts commit 809ecb9bca6a9424ccd392d67e368160f8b76c92. Since it
> was reported to break vhost_net. We want to cache used event and use
> it to check for notification. We try to valid cached used event by
> checking whether or not it was ahead of new, but this is not correct
> all the time, it could be stale and there's no way to know about this.
> 
> Signed-off-by: Jason Wang <jasowang@redhat.com>

This would then qualify for stable ?

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Thread

[PATCH net] Revert "vhost: cache used event for better performance" Jason Wang <jasowang@redhat.com> - 2017-07-26 10:10 +0200
  Re: [PATCH net] Revert "vhost: cache used event for better  performance" Christian Borntraeger <borntraeger@de.ibm.com> - 2017-07-26 13:00 +0200
    Re: [PATCH net] Revert "vhost: cache used event for better  performance" Jason Wang <jasowang@redhat.com> - 2017-07-26 14:00 +0200
  Re: [PATCH net] Revert "vhost: cache used event for better  performance" "Michael S. Tsirkin" <mst@redhat.com> - 2017-07-26 15:00 +0200
    Re: [PATCH net] Revert "vhost: cache used event for better  performance" Jason Wang <jasowang@redhat.com> - 2017-07-26 15:20 +0200
      Re: [PATCH net] Revert "vhost: cache used event for better  performance" Jason Wang <jasowang@redhat.com> - 2017-07-26 15:40 +0200
        Re: [PATCH net] Revert "vhost: cache used event for better  performance" "Michael S. Tsirkin" <mst@redhat.com> - 2017-07-26 18:10 +0200
          Re: [PATCH net] Revert "vhost: cache used event for better  performance" "K. Den" <den@klaipeden.com> - 2017-07-30 08:30 +0200
      Re: [PATCH net] Revert "vhost: cache used event for better  performance" "Michael S. Tsirkin" <mst@redhat.com> - 2017-07-26 17:30 +0200

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