linux-kernel - Re: [PATCH] vfs: keep inodes with page cache off the inode shrinker LRU

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Message-ID: <20200514103720.GA544269@cmpxchg.org>
Date:   Thu, 14 May 2020 06:37:20 -0400
From:   Johannes Weiner <hannes@...xchg.org>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     linux-fsdevel@...r.kernel.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, Dave Chinner <david@...morbit.com>,
        Yafang Shao <laoar.shao@...il.com>,
        Michal Hocko <mhocko@...e.com>, Roman Gushchin <guro@...com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Al Viro <viro@...iv.linux.org.uk>, kernel-team@...com
Subject: Re: [PATCH] vfs: keep inodes with page cache off the inode shrinker
 LRU

On Wed, May 13, 2020 at 07:24:10PM -0700, Andrew Morton wrote:
> On Tue, 12 May 2020 17:29:36 -0400 Johannes Weiner <hannes@...xchg.org> wrote:
> 
> > +		inode_pages_clear(mapping->inode);
> > +	else if (populated == 1)
> > +		inode_pages_set(mapping->inode);
> 
> mapping->host...

I'll fix that.

> I have to assume this version wasn't runtime tested, so I'll drop it.

It was, but I don't have DAX-suitable hardware so that config option
isn't enabled anywhere. I'll try to test this with a brd.

Sorry about that.