Re: [PATCH v3 15/49] nfs: dynamically allocate the nfs-acl shrinker

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On 2023/7/27 16:04, Qi Zheng wrote:
Use new APIs to dynamically allocate the nfs-acl shrinker.

Signed-off-by: Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx>
Reviewed-by: Muchun Song <songmuchun@xxxxxxxxxxxxx>
---
  fs/nfs/super.c | 20 ++++++++++++--------
  1 file changed, 12 insertions(+), 8 deletions(-)

diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 2284f749d892..072d82e1be06 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -129,11 +129,7 @@ static void nfs_ssc_unregister_ops(void)
  }
  #endif /* CONFIG_NFS_V4_2 */
-static struct shrinker acl_shrinker = {
-	.count_objects	= nfs_access_cache_count,
-	.scan_objects	= nfs_access_cache_scan,
-	.seeks		= DEFAULT_SEEKS,
-};
+static struct shrinker *acl_shrinker;
/*
   * Register the NFS filesystems
@@ -153,9 +149,17 @@ int __init register_nfs_fs(void)
  	ret = nfs_register_sysctl();
  	if (ret < 0)
  		goto error_2;
-	ret = register_shrinker(&acl_shrinker, "nfs-acl");
-	if (ret < 0)
+
+	acl_shrinker = shrinker_alloc(0, "nfs-acl");
+	if (!acl_shrinker)
  		goto error_3;

Here should set ret to -ENOMEM, will fix.

+
+	acl_shrinker->count_objects = nfs_access_cache_count;
+	acl_shrinker->scan_objects = nfs_access_cache_scan;
+	acl_shrinker->seeks = DEFAULT_SEEKS;
+
+	shrinker_register(acl_shrinker);
+
  #ifdef CONFIG_NFS_V4_2
  	nfs_ssc_register_ops();
  #endif
@@ -175,7 +179,7 @@ int __init register_nfs_fs(void)
   */
  void __exit unregister_nfs_fs(void)
  {
-	unregister_shrinker(&acl_shrinker);
+	shrinker_free(acl_shrinker);
  	nfs_unregister_sysctl();
  	unregister_nfs4_fs();
  #ifdef CONFIG_NFS_V4_2

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