[v2,15/47] quota: dynamically allocate the dquota-cache shrinker

Commit Message

Qi Zheng July 24, 2023, 9:43 a.m. UTC

Use new APIs to dynamically allocate the dquota-cache shrinker.

Signed-off-by: Qi Zheng <[e-mail]>
---
 fs/quota/dquot.c | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

Comments

Muchun Song July 26, 2023, 6:59 a.m. UTC | #1

> On Jul 24, 2023, at 17:43, Qi Zheng <[e-mail]> wrote:
> 
> Use new APIs to dynamically allocate the dquota-cache shrinker.
> 
> Signed-off-by: Qi Zheng <[e-mail]>

Reviewed-by: Muchun Song <[e-mail]>


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Patch

diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index e8232242dd34..6cb2d8911bc3 100644
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -791,11 +791,7 @@  dqcache_shrink_count(struct shrinker *shrink, struct shrink_control *sc)
 	percpu_counter_read_positive(&dqstats.counter[DQST_FREE_DQUOTS]));
 }
 
-static struct shrinker dqcache_shrinker = {
-	.count_objects = dqcache_shrink_count,
-	.scan_objects = dqcache_shrink_scan,
-	.seeks = DEFAULT_SEEKS,
-};
+static struct shrinker *dqcache_shrinker;
 
 /*
  * Safely release dquot and put reference to dquot.
@@ -2991,8 +2987,15 @@  static int __init dquot_init(void)
 	pr_info("VFS: Dquot-cache hash table entries: %ld (order %ld,"
 		" %ld bytes)\n", nr_hash, order, (PAGE_SIZE << order));
 
-	if (register_shrinker(&dqcache_shrinker, "dquota-cache"))
-		panic("Cannot register dquot shrinker");
+	dqcache_shrinker = shrinker_alloc(0, "dquota-cache");
+	if (!dqcache_shrinker)
+		panic("Cannot allocate dquot shrinker");
+
+	dqcache_shrinker->count_objects = dqcache_shrink_count;
+	dqcache_shrinker->scan_objects = dqcache_shrink_scan;
+	dqcache_shrinker->seeks = DEFAULT_SEEKS;
+
+	shrinker_register(dqcache_shrinker);
 
 	return 0;
 }