[PATCH v4 21/48] sunrpc: dynamically allocate the sunrpc_cred shrinker

[Qi Zheng via Linux-erofs]

Use new APIs to dynamically allocate the sunrpc_cred shrinker.

Signed-off-by: Qi Zheng <zhengqi.a...@bytedance.com>
Reviewed-by: Muchun Song <songmuc...@bytedance.com>
---
 net/sunrpc/auth.c | 21 +++++++++++++--------
 1 file changed, 13 insertions(+), 8 deletions(-)

diff --git a/net/sunrpc/auth.c b/net/sunrpc/auth.c
index 2f16f9d17966..0cc52e39f859 100644
--- a/net/sunrpc/auth.c
+++ b/net/sunrpc/auth.c
@@ -861,11 +861,7 @@ rpcauth_uptodatecred(struct rpc_task *task)
                test_bit(RPCAUTH_CRED_UPTODATE, &cred->cr_flags) != 0;
 }
 
-static struct shrinker rpc_cred_shrinker = {
-       .count_objects = rpcauth_cache_shrink_count,
-       .scan_objects = rpcauth_cache_shrink_scan,
-       .seeks = DEFAULT_SEEKS,
-};
+static struct shrinker *rpc_cred_shrinker;
 
 int __init rpcauth_init_module(void)
 {
@@ -874,9 +870,18 @@ int __init rpcauth_init_module(void)
        err = rpc_init_authunix();
        if (err < 0)
                goto out1;
-       err = register_shrinker(&rpc_cred_shrinker, "sunrpc_cred");
-       if (err < 0)
+       rpc_cred_shrinker = shrinker_alloc(0, "sunrpc_cred");
+       if (!rpc_cred_shrinker) {
+               err = -ENOMEM;
                goto out2;
+       }
+
+       rpc_cred_shrinker->count_objects = rpcauth_cache_shrink_count;
+       rpc_cred_shrinker->scan_objects = rpcauth_cache_shrink_scan;
+       rpc_cred_shrinker->seeks = DEFAULT_SEEKS;
+
+       shrinker_register(rpc_cred_shrinker);
+
        return 0;
 out2:
        rpc_destroy_authunix();
@@ -887,5 +892,5 @@ int __init rpcauth_init_module(void)
 void rpcauth_remove_module(void)
 {
        rpc_destroy_authunix();
-       unregister_shrinker(&rpc_cred_shrinker);
+       shrinker_free(rpc_cred_shrinker);
 }
-- 
2.30.2