linux-kernel - Re: [PATCH 0/11] introduce down_write_killable for rw

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Message-ID: <20160330133217.GV3408@twins.programming.kicks-ass.net>
Date:	Wed, 30 Mar 2016 15:32:17 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Michal Hocko <mhocko@...nel.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	"David S. Miller" <davem@...emloft.net>,
	Tony Luck <tony.luck@...el.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Chris Zankel <chris@...kel.net>,
	Max Filippov <jcmvbkbc@...il.com>, x86@...nel.org,
	linux-alpha@...r.kernel.org, linux-ia64@...r.kernel.org,
	linux-s390@...r.kernel.org, linux-sh@...r.kernel.org,
	sparclinux@...r.kernel.org, linux-xtensa@...ux-xtensa.org,
	linux-arch@...r.kernel.org
Subject: Re: [PATCH 0/11] introduce down_write_killable for rw_semaphore

On Mon, Feb 29, 2016 at 01:58:14PM +0100, Michal Hocko wrote:
> I have tested on x86 with OOM situations with high mmap_sem contention
> (basically many parallel page faults racing with many parallel mmap/munmap
> tight loops) so the waiters for the write locks are routinely interrupted
> by SIGKILL.

Aside from the one niggle (as per the other email) they look good to me
and I would take them through the tip/locking tree.

Thanks!