linux-kernel - [PATCH] f2fs: make exit_f2fs

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Date:	Wed, 18 May 2016 08:02:25 +0800 (CST)
From:	"Tiezhu Yang" <kernelpatch@....com>
To:	jaegeuk@...nel.org
Cc:	linux-f2fs-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org
Subject: [PATCH] f2fs: make exit_f2fs_fs more clear

init_f2fs_fs does:
    1) f2fs_build_trace_ios
    2) init_inodecache
    3) create_node_manager_caches
    4) create_segment_manager_caches
    5) create_checkpoint_caches
    6) create_extent_cache
    7) kset_create_and_add
    8) kobject_init_and_add
    9) register_shrinker
    10) register_filesystem
    11) f2fs_create_root_stats
    12) proc_mkdir

exit_f2fs_fs should do cleanup in the reverse order
to make the code more clear.

Signed-off-by: Tiezhu Yang <kernelpatch@....com>
---
 fs/f2fs/super.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index bbfeb6a..741fba1 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -1928,17 +1928,17 @@ static void __exit exit_f2fs_fs(void)
 {
 	remove_proc_entry("fs/f2fs", NULL);
 	f2fs_destroy_root_stats();
-	unregister_shrinker(&f2fs_shrinker_info);
 	unregister_filesystem(&f2fs_fs_type);
+	unregister_shrinker(&f2fs_shrinker_info);
+#ifdef CONFIG_F2FS_FAULT_INJECTION
+	kobject_put(&f2fs_fault_inject);
+#endif
+	kset_unregister(f2fs_kset);
 	destroy_extent_cache();
 	destroy_checkpoint_caches();
 	destroy_segment_manager_caches();
 	destroy_node_manager_caches();
 	destroy_inodecache();
-#ifdef CONFIG_F2FS_FAULT_INJECTION
-	kobject_put(&f2fs_fault_inject);
-#endif
-	kset_unregister(f2fs_kset);
 	f2fs_destroy_trace_ios();
 }
 
-- 
1.8.3.1