Re: [PATCH V10] cgroup/rstat: Avoid flushing if there is an ongoing root flush

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To: Yosry Ahmed <yosryahmed@xxxxxxxxxx>
Subject: Re: [PATCH V10] cgroup/rstat: Avoid flushing if there is an ongoing root flush
From: Nhat Pham <nphamcs@xxxxxxxxx>
Date: Thu, 12 Sep 2024 16:04:07 -0700
Cc: Jesper Dangaard Brouer <hawk@xxxxxxxxxx>, tj@xxxxxxxxxx, cgroups@xxxxxxxxxxxxxxx, shakeel.butt@xxxxxxxxx, hannes@xxxxxxxxxxx, lizefan.x@xxxxxxxxxxxxx, longman@xxxxxxxxxx, kernel-team@xxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, mfleming@xxxxxxxxxxxxxx, joshua.hahnjy@xxxxxxxxx
In-reply-to: <CAJD7tkYhOphYbNnwkZfJykii7kAR6PRvZ0pv7R=zhG0vCjxh4A@mail.gmail.com>
References: <172547884995.206112.808619042206173396.stgit@firesoul> <CAJD7tkak0yZNh+ZQ0FRJhmHPmC5YmccV4Cs+ZOk9DCp4s1ECCA@mail.gmail.com> <f957dbe3-d669-40b7-8b90-08fa40a3c23d@kernel.org> <CAJD7tkYv8oDsPkVrUkmBrUxB02nEi-Suf=arsd5g4gM7tP2KxA@mail.gmail.com> <afa40214-0196-4ade-9c10-cd78d0588c02@kernel.org> <CAJD7tkZ3-BrnMoEQAu_gfS-zfFMAu4SeFvGFj1pNiZwGdtrmwQ@mail.gmail.com> <84e09f0c-10d7-4648-b243-32f18974e417@kernel.org> <CAJD7tkYY5sipMU+w8ygPTGKfjvdMh_e0=FtxYkO9BG5VpF+QUA@mail.gmail.com> <CAKEwX=PTA0OxisvY12Wa95s5KqzvQTXe1rZ7nw29nP+wR2dxkA@mail.gmail.com> <CAJD7tkbMph337XbBTbWfF8kp_fStP3-rN77vfR5tcn2+wYfJPQ@mail.gmail.com> <CAKEwX=PcK=kJG-yxaoTYvJGNwQ=eTGo1m=ZraqYy1SyLDs9Asw@mail.gmail.com> <CAJD7tkYhOphYbNnwkZfJykii7kAR6PRvZ0pv7R=zhG0vCjxh4A@mail.gmail.com>

On Thu, Sep 12, 2024 at 11:51 AM Yosry Ahmed <yosryahmed@xxxxxxxxxx> wrote:
>
> Do you mean per-lruvec or per-memcg?

Ah yeah ignore that part. I was originally thinking of adding a
per-lruvec zswap atomic counter just to fix zswap shrinker, but now
we'll need 2 atomic counters per-memcg to replace MEMCG_ZSWAP_B and
MEMCG_ZSWAPPED. The zswap_shrinker_count() will also use these two new
counters too. My apologies for the confusions...

References:
- [PATCH V10] cgroup/rstat: Avoid flushing if there is an ongoing root flush
  - From: Jesper Dangaard Brouer
- Re: [PATCH V10] cgroup/rstat: Avoid flushing if there is an ongoing root flush
  - From: Yosry Ahmed
- Re: [PATCH V10] cgroup/rstat: Avoid flushing if there is an ongoing root flush
  - From: Jesper Dangaard Brouer
- Re: [PATCH V10] cgroup/rstat: Avoid flushing if there is an ongoing root flush
  - From: Yosry Ahmed
- Re: [PATCH V10] cgroup/rstat: Avoid flushing if there is an ongoing root flush
  - From: Jesper Dangaard Brouer
- Re: [PATCH V10] cgroup/rstat: Avoid flushing if there is an ongoing root flush
  - From: Yosry Ahmed
- Re: [PATCH V10] cgroup/rstat: Avoid flushing if there is an ongoing root flush
  - From: Jesper Dangaard Brouer
- Re: [PATCH V10] cgroup/rstat: Avoid flushing if there is an ongoing root flush
  - From: Yosry Ahmed
- Re: [PATCH V10] cgroup/rstat: Avoid flushing if there is an ongoing root flush
  - From: Nhat Pham
- Re: [PATCH V10] cgroup/rstat: Avoid flushing if there is an ongoing root flush
  - From: Yosry Ahmed
- Re: [PATCH V10] cgroup/rstat: Avoid flushing if there is an ongoing root flush
  - From: Nhat Pham
- Re: [PATCH V10] cgroup/rstat: Avoid flushing if there is an ongoing root flush
  - From: Yosry Ahmed

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