From: Sebastian Andrzej Siewior bigeasy@linutronix.de
commit ab047d516dea72f011c15c04a929851e4d053109 upstream.
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@linutronix.de Reviewed-by: Lukas Czerner lczerner@redhat.com Reviewed-by: Harshad Shirwadkar harshadshirwadkar@gmail.com Link: https://lore.kernel.org/r/20211110134640.lyku5vklvdndw6uk@linutronix.de Link: https://lore.kernel.org/r/YbiK3JetFFl08bd7@linutronix.de Link: https://lore.kernel.org/r/20211223164436.2628390-1-bigeasy@linutronix.de Signed-off-by: Theodore Ts'o tytso@mit.edu Cc: stable@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- fs/ext4/ext4.h | 1 + fs/ext4/fast_commit.c | 5 +++++ fs/ext4/super.c | 2 ++ 3 files changed, 8 insertions(+)
--- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -2935,6 +2935,7 @@ bool ext4_fc_replay_check_excluded(struc 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; --- a/fs/ext4/fast_commit.c +++ b/fs/ext4/fast_commit.c @@ -2195,3 +2195,8 @@ int __init ext4_fc_init_dentry_cache(voi
return 0; } + +void ext4_fc_destroy_dentry_cache(void) +{ + kmem_cache_destroy(ext4_fc_dentry_cachep); +} --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -6662,6 +6662,7 @@ static int __init ext4_init_fs(void) out: unregister_as_ext2(); unregister_as_ext3(); + ext4_fc_destroy_dentry_cache(); out05: destroy_inodecache(); out1: @@ -6688,6 +6689,7 @@ 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();