On Thu, Mar 02, 2023 at 03:32:01PM +1100, Imran Khan wrote:
> +++ b/fs/kernfs/kernfs-internal.h
> @@ -47,6 +47,7 @@ struct kernfs_root {
>
> wait_queue_head_t deactivate_waitq;
> struct rw_semaphore kernfs_rwsem;
> + struct rw_semaphore kernfs_iattr_rwsem;
> };
>
> /* +1 to avoid triggering overflow warning when negating it */
Can you explain why we want one iattr rwsem per kernfs_root instead of
one rwsem per kernfs_node?
