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| author | Al Viro <viro@zeniv.linux.org.uk> | 2023-09-20 02:18:59 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2024-02-25 08:10:31 +0100 |
| commit | af072cf683acd2307e02378cfcf2502c49d2e127 (patch) | |
| tree | 790a21d7610d3ead80be4ad0b21936f92d9f247d /fs/hfsplus | |
| parent | exfat: move freeing sbi, upcase table and dropping nls into rcu-delayed helper (diff) | |
| download | linux-af072cf683acd2307e02378cfcf2502c49d2e127.tar.xz linux-af072cf683acd2307e02378cfcf2502c49d2e127.zip | |
hfsplus: switch to rcu-delayed unloading of nls and freeing ->s_fs_info
->d_hash() and ->d_compare() use those, so we need to delay freeing
them.
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/hfsplus')
| -rw-r--r-- | fs/hfsplus/hfsplus_fs.h | 1 | ||||
| -rw-r--r-- | fs/hfsplus/super.c | 12 |
2 files changed, 10 insertions, 3 deletions
diff --git a/fs/hfsplus/hfsplus_fs.h b/fs/hfsplus/hfsplus_fs.h index 7ededcb720c1..012a3d003fbe 100644 --- a/fs/hfsplus/hfsplus_fs.h +++ b/fs/hfsplus/hfsplus_fs.h @@ -190,6 +190,7 @@ struct hfsplus_sb_info { int work_queued; /* non-zero delayed work is queued */ struct delayed_work sync_work; /* FS sync delayed work */ spinlock_t work_lock; /* protects sync_work and work_queued */ + struct rcu_head rcu; }; #define HFSPLUS_SB_WRITEBACKUP 0 diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c index 1986b4f18a90..97920202790f 100644 --- a/fs/hfsplus/super.c +++ b/fs/hfsplus/super.c @@ -277,6 +277,14 @@ void hfsplus_mark_mdb_dirty(struct super_block *sb) spin_unlock(&sbi->work_lock); } +static void delayed_free(struct rcu_head *p) +{ + struct hfsplus_sb_info *sbi = container_of(p, struct hfsplus_sb_info, rcu); + + unload_nls(sbi->nls); + kfree(sbi); +} + static void hfsplus_put_super(struct super_block *sb) { struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); @@ -302,9 +310,7 @@ static void hfsplus_put_super(struct super_block *sb) hfs_btree_close(sbi->ext_tree); kfree(sbi->s_vhdr_buf); kfree(sbi->s_backup_vhdr_buf); - unload_nls(sbi->nls); - kfree(sb->s_fs_info); - sb->s_fs_info = NULL; + call_rcu(&sbi->rcu, delayed_free); } static int hfsplus_statfs(struct dentry *dentry, struct kstatfs *buf) |