The kmemcache for ext4_fc_dentry_cachep remains registered after module
removal.
Destroy ext4_fc_dentry_cachep kmemcache on module removal.
Fixes: aa75f4d3daaeb ("ext4: main fast-commit commit path")
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
Reviewed-by: Lukas Czerner <lczerner@xxxxxxxxxx>
Reviewed-by: Harshad Shirwadkar <harshadshirwadkar@xxxxxxxxx>
Link: https://lore.kernel.org/r/20211110134640.lyku5vklvdndw6uk@xxxxxxxxxxxxx
Link: https://lore.kernel.org/r/YbiK3JetFFl08bd7@xxxxxxxxxxxxx
---
fs/ext4/ext4.h | 1 +
fs/ext4/fast_commit.c | 5 +++++
fs/ext4/super.c | 2 ++
3 files changed, 8 insertions(+)
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 9cc55bcda6ba4..2d414dfd60cb6 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -2936,6 +2936,7 @@ bool ext4_fc_replay_check_excluded(struct super_block *sb, ext4_fsblk_t block);
void ext4_fc_replay_cleanup(struct super_block *sb);
int ext4_fc_commit(journal_t *journal, tid_t commit_tid);
int __init ext4_fc_init_dentry_cache(void);
+void ext4_fc_destroy_dentry_cache(void);
/* mballoc.c */
extern const struct seq_operations ext4_mb_seq_groups_ops;
diff --git a/fs/ext4/fast_commit.c b/fs/ext4/fast_commit.c
index 0f32b445582ab..4665508efd778 100644
--- a/fs/ext4/fast_commit.c
+++ b/fs/ext4/fast_commit.c
@@ -2192,3 +2192,8 @@ int __init ext4_fc_init_dentry_cache(void)
return 0;
}
+
+void ext4_fc_destroy_dentry_cache(void)
+{
+ kmem_cache_destroy(ext4_fc_dentry_cachep);
+}
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index b72d989b77fb6..55f2fba6a5292 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -7133,6 +7133,7 @@ static int __init ext4_init_fs(void)
out:
unregister_as_ext2();
unregister_as_ext3();
+ ext4_fc_destroy_dentry_cache();
out05:
destroy_inodecache();
out1:
@@ -7159,6 +7160,7 @@ static void __exit ext4_exit_fs(void)
unregister_as_ext2();
unregister_as_ext3();
unregister_filesystem(&ext4_fs_type);
+ ext4_fc_destroy_dentry_cache();
destroy_inodecache();
ext4_exit_mballoc();
ext4_exit_sysfs();
--
2.34.1
