netdev - Re: [PATCH v2 29/47] vmw_balloon: dynamically allocate the vmw-balloon shrinker

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Message-Id: <1D40C9FD-84F6-40BA-8D2C-0DF05882C933@linux.dev>
Date: Wed, 26 Jul 2023 15:35:42 +0800
From: Muchun Song <muchun.song@...ux.dev>
To: Qi Zheng <zhengqi.arch@...edance.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
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Subject: Re: [PATCH v2 29/47] vmw_balloon: dynamically allocate the
 vmw-balloon shrinker

> On Jul 24, 2023, at 17:43, Qi Zheng <zhengqi.arch@...edance.com> wrote:
> 
> In preparation for implementing lockless slab shrink, use new APIs to
> dynamically allocate the vmw-balloon shrinker, so that it can be freed
> asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
> read-side critical section when releasing the struct vmballoon.
> 
> And we can simply exit vmballoon_init() when registering the shrinker
> fails. So the shrinker_registered indication is redundant, just remove it.
> 
> Signed-off-by: Qi Zheng <zhengqi.arch@...edance.com>

Nice cleanup.

Reviewed-by: Muchun Song <songmuchun@...edance.com>