[PATCH 09/11] audit: Allocate fsnotify mark independently of chunk

[Paul Moore]

On Tue, Sep 4, 2018 at 12:06 PM Jan Kara <jack at suse.cz> wrote:
> Allocate fsnotify mark independently instead of embedding it inside
> chunk. This will allow us to just replace chunk attached to mark when
> growing / shrinking chunk instead of replacing mark attached to inode
> which is a more complex operation.
>
> Signed-off-by: Jan Kara <jack at suse.cz>
> ---
>  kernel/audit_tree.c | 64 +++++++++++++++++++++++++++++++++++++++++------------
>  1 file changed, 50 insertions(+), 14 deletions(-)
>
> diff --git a/kernel/audit_tree.c b/kernel/audit_tree.c
> index 0cd08b3581f1..481fdc190c2f 100644
> --- a/kernel/audit_tree.c
> +++ b/kernel/audit_tree.c
> @@ -142,10 +148,33 @@ static void audit_mark_put_chunk(struct audit_chunk *chunk)
>         call_rcu(&chunk->head, __put_chunk);
>  }
>
> +static inline struct audit_tree_mark *audit_mark(struct fsnotify_mark *entry)
> +{
> +       return container_of(entry, struct audit_tree_mark, mark);
> +}
> +
> +static struct audit_chunk *mark_chunk(struct fsnotify_mark *mark)
> +{
> +       return audit_mark(mark)->chunk;
> +}
> +

...

> @@ -426,7 +460,7 @@ static int tag_chunk(struct inode *inode, struct audit_tree *tree)
>         if (!old_entry)
>                 return create_chunk(inode, tree);
>
> -       old = container_of(old_entry, struct audit_chunk, mark);
> +       old = mark_chunk(old_entry)->chunk;

I'm pretty sure you mean the following instead?

  old = mark_chunk(old_entry);

>         /* are we already there? */
>         spin_lock(&hash_lock);

-- 
paul moore
www.paul-moore.com