Re: [RFC PATCH v2] fs/namespace: use percpu_rw_semaphore for writer holding
From: Al Viro
Date: Sat Jul 18 2020 - 21:49:59 EST
On Thu, Jul 02, 2020 at 05:46:46PM +0200, Sebastian Andrzej Siewior wrote:
> The MNT_WRITE_HOLD flag is used to manually implement a rwsem.
Could you show me where does it currently sleep? Your version does,
unless I'm misreading it...