On Fri, 28 May 2021 at 08:34, Ian Kent <raven@xxxxxxxxxx> wrote: > > The kernfs global lock restricts the ability to perform kernfs node > lookup operations in parallel during path walks. > > Change the kernfs mutex to an rwsem so that, when opportunity arises, > node searches can be done in parallel with path walk lookups. I don't see how this could have any drawbacks. Reviewed-by: Miklos Szeredi <mszeredi@xxxxxxxxxx>