From: Sultan Alsawaf <sultan@kerneltoast.com>
To: Michal Hocko <mhocko@suse.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] mm: vmscan: Replace shrinker_rwsem trylocks with SRCU protection
Date: Mon, 27 Sep 2021 09:53:59 -0700 [thread overview]
Message-ID: <YVH3J+bIGmCLVr0e@sultan-box.localdomain> (raw)
In-Reply-To: <YVGClLWLXO8AWaEk@dhcp22.suse.cz>
On Mon, Sep 27, 2021 at 10:36:36AM +0200, Michal Hocko wrote:
> Can you be more specific about those scenarios please?
I see frequent tmpfs mounts/unmounts in Android which result in lots of
superblocks being created and destroyed, and each superblock has its own
shrinker.
> I have a vague recollection that this approach has been proposed in the
> past. Have you checked previous attempts?
I wasn't aware that there were previous attempts. Is this [1] the previous
attempt you're thinking of? It seems like the thread just died out. Was the main
gripe that always enabling CONFIG_SRCU increased the kernel's size too much when
tinyfication was desired?
Sultan
[1] https://lore.kernel.org/all/153365347929.19074.12509495712735843805.stgit@localhost.localdomain/
next prev parent reply other threads:[~2021-09-27 16:54 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-27 7:48 Sultan Alsawaf
2021-09-27 8:36 ` Michal Hocko
2021-09-27 16:53 ` Sultan Alsawaf [this message]
2021-09-29 8:06 ` Michal Hocko
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