Subject: Re: [PATCH v2 0/5] mm: reduce mmap_lock contention and improve page fault performance

From: Matthew Wilcox <[email-masked]>
Date: Wed, 20 May 2026 22:15:59 +0100

On Thu, May 21, 2026 at 05:14:20AM +0800, Barry Song wrote:
> My understanding is that we should not blame applications here. This is 2026:
> there are basically only two kinds of applications — single-threaded and
> multi-threaded — and single-threaded applications are nearly extinct.

all of the applications i run are either single threaded or don't fork.
what multithreaded applications call fork?