On Wed, Aug 23, 2023 at 8:47 PM Qi Zheng [off-list ref] wrote:

In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the md-raid5 shrinker, so that it can be freed
asynchronously via RCU. Then it doesn't need to wait for RCU read-side
critical section when releasing the struct r5conf.

Signed-off-by: Qi Zheng <redacted>
Reviewed-by: Muchun Song <redacted>
CC: Song Liu <song@kernel.org>
CC: linux-raid@vger.kernel.org

LGTM!

Reviewed-by: Song Liu <song@kernel.org>