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Message-Id: <20230911094444.68966-8-zhengqi.arch@bytedance.com>
Date: Mon, 11 Sep 2023 17:44:06 +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,
linux-fsdevel@...r.kernel.org,
Qi Zheng <zhengqi.arch@...edance.com>,
Muchun Song <songmuchun@...edance.com>,
Chao Yu <chao@...nel.org>, Jaegeuk Kim <jaegeuk@...nel.org>,
linux-f2fs-devel@...ts.sourceforge.net
Subject: [PATCH v6 07/45] f2fs: dynamically allocate the f2fs-shrinker
Use new APIs to dynamically allocate the f2fs-shrinker.
Signed-off-by: Qi Zheng <zhengqi.arch@...edance.com>
Reviewed-by: Muchun Song <songmuchun@...edance.com>
Reviewed-by: Chao Yu <chao@...nel.org>
CC: Jaegeuk Kim <jaegeuk@...nel.org>
CC: linux-f2fs-devel@...ts.sourceforge.net
---
fs/f2fs/super.c | 31 +++++++++++++++++++++++--------
1 file changed, 23 insertions(+), 8 deletions(-)
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index a8c8232852bb..fe25ff9cebbe 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -83,11 +83,26 @@ void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate,
#endif
/* f2fs-wide shrinker description */
-static struct shrinker f2fs_shrinker_info = {
- .scan_objects = f2fs_shrink_scan,
- .count_objects = f2fs_shrink_count,
- .seeks = DEFAULT_SEEKS,
-};
+static struct shrinker *f2fs_shrinker_info;
+
+static int __init f2fs_init_shrinker(void)
+{
+ f2fs_shrinker_info = shrinker_alloc(0, "f2fs-shrinker");
+ if (!f2fs_shrinker_info)
+ return -ENOMEM;
+
+ f2fs_shrinker_info->count_objects = f2fs_shrink_count;
+ f2fs_shrinker_info->scan_objects = f2fs_shrink_scan;
+
+ shrinker_register(f2fs_shrinker_info);
+
+ return 0;
+}
+
+static void f2fs_exit_shrinker(void)
+{
+ shrinker_free(f2fs_shrinker_info);
+}
enum {
Opt_gc_background,
@@ -4944,7 +4959,7 @@ static int __init init_f2fs_fs(void)
err = f2fs_init_sysfs();
if (err)
goto free_garbage_collection_cache;
- err = register_shrinker(&f2fs_shrinker_info, "f2fs-shrinker");
+ err = f2fs_init_shrinker();
if (err)
goto free_sysfs;
err = register_filesystem(&f2fs_fs_type);
@@ -4989,7 +5004,7 @@ static int __init init_f2fs_fs(void)
f2fs_destroy_root_stats();
unregister_filesystem(&f2fs_fs_type);
free_shrinker:
- unregister_shrinker(&f2fs_shrinker_info);
+ f2fs_exit_shrinker();
free_sysfs:
f2fs_exit_sysfs();
free_garbage_collection_cache:
@@ -5021,7 +5036,7 @@ static void __exit exit_f2fs_fs(void)
f2fs_destroy_post_read_processing();
f2fs_destroy_root_stats();
unregister_filesystem(&f2fs_fs_type);
- unregister_shrinker(&f2fs_shrinker_info);
+ f2fs_exit_shrinker();
f2fs_exit_sysfs();
f2fs_destroy_garbage_collection_cache();
f2fs_destroy_extent_cache();
--
2.30.2
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