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ext4: destroy ext4_fc_dentry_cachep kmemcache on module removal 

The kmemcache for ext4_fc_dentry_cachep remains registered after module
removal.

Destroy ext4_fc_dentry_cachep kmemcache on module removal.

Fixes: aa75f4d3da ("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
This commit is contained in:
Sebastian Andrzej Siewior 2021-12-23 17:44:36 +01:00 committed by Theodore Ts'o
parent 9725958bb7
commit ab047d516d
3 changed files with 8 additions and 0 deletions
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1
fs/ext4/ext4.h
View File

@ -2932,6 +2932,7 @@ 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;

5
fs/ext4/fast_commit.c
View File

@ -2153,3 +2153,8 @@ int __init ext4_fc_init_dentry_cache(void)
return 0;
}
void ext4_fc_destroy_dentry_cache(void)
{
kmem_cache_destroy(ext4_fc_dentry_cachep);
}

2
fs/ext4/super.c
View File

@ -7118,6 +7118,7 @@ static int __init ext4_init_fs(void)
out:
unregister_as_ext2();
unregister_as_ext3();
ext4_fc_destroy_dentry_cache();
out05:
destroy_inodecache();
out1:
@ -7144,6 +7145,7 @@ 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();