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From: Roman Gushchin To: Yang Shi Cc: Johannes Weiner , Michal Hocko , Shakeel Butt , Tejun Heo , linux-mm@kvack.org, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org, Christian Brauner Subject: Re: [RFC PATCH] mm: memcontrol: don't account swap failures not due to cgroup limits Message-ID: References: <20230202155626.1829121-1-hannes@cmpxchg.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Migadu-Flow: FLOW_OUT X-Rspamd-Queue-Id: 8D16040021 X-Stat-Signature: m6gmh5thp8nnk1h19y94ga41wjjyobof X-Rspam-User: X-Rspamd-Server: rspam08 X-HE-Tag: 1675451979-282026 X-HE-Meta: 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 zkeqLGUy 6Usfgi1tOZb/bxmGb5wmkS3Nqz8QXk6t50gt7/jRLrnk5Jjh5OR5MdEeYSSzYswSRy8LWwIAbtUekqfAhQ/dmLX5m2J9yJLr1ggnF7p6WJ0SKQFvsrghaCuQsGRkCMcUYKu4BGQvT6WVPgsU= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Fri, Feb 03, 2023 at 11:07:30AM -0800, Yang Shi wrote: > On Fri, Feb 3, 2023 at 11:00 AM Roman Gushchin wrote: > > > > On Thu, Feb 02, 2023 at 10:56:26AM -0500, Johannes Weiner wrote: > > > Christian reports the following situation in a cgroup that doesn't > > > have memory.swap.max configured: > > > > > > $ cat memory.swap.events > > > high 0 > > > max 0 > > > fail 6218 > > > > > > Upon closer examination, this is an ARM64 machine that doesn't support > > > swapping out THPs. > > > > Do we expect it to be added any time soon or it's caused by some system > > limitations? > > AFAIK, it has been supported since 6.0. See commit d0637c505f8a1 Great, thank you for the link! Then it looks like we have even fewer reasons to change the interface. Thanks!