[PATCH] erofs: release ztailpacking pclusters properly

[Gao Xiang]

On 2023/8/22 19:05, Jingbo Xu wrote:
> Currently ztailpacking pclusters are chained with FOLLOWED_NOINPLACE and
> not recorded into the managed_pslots XArray.
> 
> After commit 7674a42f35ea ("erofs: use struct lockref to replace
> handcrafted approach"), ztailpacking pclusters won't be freed with
> erofs_workgroup_put() anymore, which will cause the following issue:
> 
> BUG erofs_pcluster-1 (Tainted: G           OE     ): Objects remaining in erofs_pcluster-1 on __kmem_cache_shutdown()
> 
> Use z_erofs_free_pcluster() directly to free ztailpacking pclusters.
> 
> Fixes: 7674a42f35ea ("erofs: use struct lockref to replace handcrafted approach")
> Signed-off-by: Jingbo Xu <jefflexu at linux.alibaba.com>

Reviewed-by: Gao Xiang <hsiangkao at linux.alibaba.com>

Thanks,
Gao Xiang