Christoph Hellwig wrote: > On Mon, Nov 20, 2017 at 10:42:37AM +0100, Michal Hocko wrote: > > The patch has been dropped because allnoconfig failed to compile back > > then > > http://lkml.kernel.org/r/CAP=VYLr0rPWi1aeuk4w1On9CYRNmnEWwJgGtaX=wevgabur...@mail.gmail.com > > I have problem to find the follow up discussion though. The main > > argument was that SRC is not generally available and so the core > > kernel should rely on it. > > Paul, > > isthere any good reason to not use SRCU in the core kernel and > instead try to reimplement it using atomic counters?
CONFIG_SRCU was added in order to save system size. There are users who run Linux on very small systems ( https://www.elinux.org/images/5/52/Status-of-embedded-Linux-2017-09-JJ62.pdf ). Also, atomic counters are not mandatory for shrinker case; e.g. http://lkml.kernel.org/r/201711161956.ebf57883.qffmolovsoh...@i-love.sakura.ne.jp .
