On Mon, 10 Jan 2022 21:04:39 +0000, Jing Zhang <jingzhangos@xxxxxxxxxx> wrote: > > To reduce the contentions caused by MMU lock, some MMU operations can > be performed under read lock. > One improvement is to add a fast path for permission relaxation during > dirty logging under the read lock. This commit message really doesn't say what this patch does (converting our MMU spinlock to a rwlock, and replacing all instances of the lock being acquired with a write lock acquisition). Crucially, it only mention the read lock which appears *nowhere* in this patch. Thanks, M. -- Without deviation from the norm, progress is not possible.
