On Mon, Mar 15, 2021 at 02:19:12PM +0100, Oleg Nesterov wrote: > > > > > > And why task_lock(current) ? What does it try to protect? > > > > As far as I remember this was related to reading from procfs > > at time the patch was written for first time. Looks like this > > not relevant anymore and could be dropped. > > I think this was never relevant, ->alloc_lock is per-thread, not per mm.
Then we can safely drop it. I'll take one more look once time permit and prepare a patch.
