[PATCH v2 40/47] fs: super: dynamically allocate the s_shrink

[Muchun Song]

On 2023/7/24 17:43, Qi Zheng wrote:
> In preparation for implementing lockless slab shrink, use new APIs to
> dynamically allocate the s_shrink, 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 super_block.
>
> Signed-off-by: Qi Zheng <zhengqi.arch at bytedance.com>

Reviewed-by: Muchun Song <songmuchun at bytedance.com>