linux-kernel - Re: [PATCH 08/10] blk-cgroup: remove radix_tree

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Message-ID: <497b2eb9-a214-4887-ac89-bd2ddff3cb7d@yukuai.org.cn>
Date: Mon, 6 Oct 2025 09:55:39 +0800
From: Yu Kuai <hailan@...uai.org.cn>
To: Christoph Hellwig <hch@....de>, Yu Kuai <yukuai1@...weicloud.com>
Cc: tj@...nel.org, ming.lei@...hat.com, nilay@...ux.ibm.com,
 josef@...icpanda.com, axboe@...nel.dk, akpm@...ux-foundation.org,
 vgoyal@...hat.com, cgroups@...r.kernel.org, linux-block@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-mm@...ck.org, yukuai3@...wei.com,
 yi.zhang@...wei.com, yangerkun@...wei.com, johnny.chenyi@...wei.com
Subject: Re: [PATCH 08/10] blk-cgroup: remove radix_tree_preload()

Hi,

在 2025/10/3 15:37, Christoph Hellwig 写道:
> On Thu, Sep 25, 2025 at 04:15:23PM +0800, Yu Kuai wrote:
>> From: Yu Kuai <yukuai3@...wei.com>
>>
>> Now that blkcg_mutex is used to protect blkgs, memory allocation no
>> longer need to be non-blocking, this is not needed.
> Btw, this might also be a good time to convert from the old radix tree
> to an xarray.
>
Sure, I can do that, perhaps after this set and cleanup blkg_conf_prep apis.

Thanks,
Kuai