linux-kernel - Re: [PATCH] mm: fix page cache convergence regression

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Message-ID: <20190624151923.GA10572@cmpxchg.org>
Date:   Mon, 24 Jun 2019 11:19:23 -0400
From:   Johannes Weiner <hannes@...xchg.org>
To:     Matthew Wilcox <willy@...radead.org>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
        cgroups@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-team@...com
Subject: Re: [PATCH] mm: fix page cache convergence regression

On Thu, May 30, 2019 at 10:13:56AM -0700, Matthew Wilcox wrote:
> On Thu, May 30, 2019 at 12:15:48PM -0400, Johannes Weiner wrote:
> > Are there any objections or feedback on the proposed fix below? This
> > is kind of a serious regression.
> 
> I'll drop it into the xarray tree for merging in a week, if that's ok
> with you?

Hey, it's three weeks later and we're about to miss 5.2.

This sucks, Matthew. You introduced a serious regression to the MM
subsystem, whose process and patch routing you largely bypassed. When
I encountered the problem and provided a reproducer and a fix, you
gave me a hard time on cosmetic grounds. I incorporated all your
feedback, and still you show no urgency to get this patch or a fix of
your own into mainline. It's your bug, please fix it.