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ntfs3: free the sbi in ->kill_sb

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As a rule of thumb everything allocated to the fs_context and moved into
the super_block should be freed by ->kill_sb so that the teardown
handling doesn't need to be duplicated between the fill_super error
path and put_super.  Implement an ntfs3-specific kill_sb method to do
that.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Christian Brauner <brauner@kernel.org>
Message-Id: <20230809220545.1308228-14-hch@lst.de>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Christoph Hellwig 2023-08-09 15:05:45 -07:00 committed by Christian Brauner
parent 5f0fb2210b
commit a4f64a300a
1 changed files with 12 additions and 13 deletions
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25
fs/ntfs3/super.c
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@ -625,10 +625,6 @@ static void ntfs_put_super(struct super_block *sb)
/* Mark rw ntfs as clear, if possible. */
ntfs_set_state(sbi, NTFS_DIRTY_CLEAR);
put_mount_options(sbi->options);
ntfs3_free_sbi(sbi);
sb->s_fs_info = NULL;
}
static int ntfs_statfs(struct dentry *dentry, struct kstatfs *buf)
@ -1562,15 +1558,7 @@ load_root:
put_inode_out:
iput(inode);
out:
/*
* Free resources here.
* ntfs_fs_free will be called with fc->s_fs_info = NULL
*/
put_mount_options(sbi->options);
ntfs3_free_sbi(sbi);
sb->s_fs_info = NULL;
kfree(boot2);
return err;
}
@ -1726,13 +1714,24 @@ free_opts:
return -ENOMEM;
}
static void ntfs3_kill_sb(struct super_block *sb)
{
struct ntfs_sb_info *sbi = sb->s_fs_info;
kill_block_super(sb);
if (sbi->options)
put_mount_options(sbi->options);
ntfs3_free_sbi(sbi);
}
// clang-format off
static struct file_system_type ntfs_fs_type = {
.owner = THIS_MODULE,
.name = "ntfs3",
.init_fs_context = ntfs_init_fs_context,
.parameters = ntfs_fs_parameters,
.kill_sb = kill_block_super,
.kill_sb = ntfs3_kill_sb,
.fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP,
};
// clang-format on