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Message-Id: <20230727080502.77895-10-zhengqi.arch@bytedance.com>
Date: Thu, 27 Jul 2023 16:04:22 +0800
From: Qi Zheng <zhengqi.arch@...edance.com>
To: akpm@...ux-foundation.org, david@...morbit.com, tkhai@...ru,
vbabka@...e.cz, roman.gushchin@...ux.dev, djwong@...nel.org,
brauner@...nel.org, paulmck@...nel.org, tytso@....edu,
steven.price@....com, cel@...nel.org, senozhatsky@...omium.org,
yujie.liu@...el.com, gregkh@...uxfoundation.org,
muchun.song@...ux.dev
Cc: linux-kernel@...r.kernel.org, linux-mm@...ck.org, x86@...nel.org,
kvm@...r.kernel.org, xen-devel@...ts.xenproject.org,
linux-erofs@...ts.ozlabs.org,
linux-f2fs-devel@...ts.sourceforge.net, cluster-devel@...hat.com,
linux-nfs@...r.kernel.org, linux-mtd@...ts.infradead.org,
rcu@...r.kernel.org, netdev@...r.kernel.org,
dri-devel@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
dm-devel@...hat.com, linux-raid@...r.kernel.org,
linux-bcache@...r.kernel.org,
virtualization@...ts.linux-foundation.org,
linux-fsdevel@...r.kernel.org, linux-ext4@...r.kernel.org,
linux-xfs@...r.kernel.org, linux-btrfs@...r.kernel.org,
Qi Zheng <zhengqi.arch@...edance.com>,
Muchun Song <songmuchun@...edance.com>
Subject: [PATCH v3 09/49] xenbus/backend: dynamically allocate the xen-backend shrinker
Use new APIs to dynamically allocate the xen-backend shrinker.
Signed-off-by: Qi Zheng <zhengqi.arch@...edance.com>
Reviewed-by: Muchun Song <songmuchun@...edance.com>
---
drivers/xen/xenbus/xenbus_probe_backend.c | 18 +++++++++++-------
1 file changed, 11 insertions(+), 7 deletions(-)
diff --git a/drivers/xen/xenbus/xenbus_probe_backend.c b/drivers/xen/xenbus/xenbus_probe_backend.c
index da96c260e26b..929c41a5ccee 100644
--- a/drivers/xen/xenbus/xenbus_probe_backend.c
+++ b/drivers/xen/xenbus/xenbus_probe_backend.c
@@ -284,13 +284,9 @@ static unsigned long backend_shrink_memory_count(struct shrinker *shrinker,
return 0;
}
-static struct shrinker backend_memory_shrinker = {
- .count_objects = backend_shrink_memory_count,
- .seeks = DEFAULT_SEEKS,
-};
-
static int __init xenbus_probe_backend_init(void)
{
+ struct shrinker *backend_memory_shrinker;
static struct notifier_block xenstore_notifier = {
.notifier_call = backend_probe_and_watch
};
@@ -305,8 +301,16 @@ static int __init xenbus_probe_backend_init(void)
register_xenstore_notifier(&xenstore_notifier);
- if (register_shrinker(&backend_memory_shrinker, "xen-backend"))
- pr_warn("shrinker registration failed\n");
+ backend_memory_shrinker = shrinker_alloc(0, "xen-backend");
+ if (!backend_memory_shrinker) {
+ pr_warn("shrinker allocation failed\n");
+ return 0;
+ }
+
+ backend_memory_shrinker->count_objects = backend_shrink_memory_count;
+ backend_memory_shrinker->seeks = DEFAULT_SEEKS;
+
+ shrinker_register(backend_memory_shrinker);
return 0;
}
--
2.30.2
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