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Tue, 13 Feb 2024 00:18:53 -0800 (PST) X-Forwarded-Encrypted: i=1; AJvYcCVAAc/oF7JlHAeWkj6R4PN2sFcRFlAjJ0cfUJnTj4aDBpPn59NNlOTgYY9tPmlHCLAGV42ZCDsi5nzH0sTWCiBpukIPo8wsYGu2KRlcSmJ7Ue96Huk0kJvCtQtB Received: from localhost ([2620:10d:c091:400::5:b0f]) by smtp.gmail.com with ESMTPSA id lz9-20020a0562145c4900b0068d05b81fb2sm1057619qvb.15.2024.02.13.00.18.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 13 Feb 2024 00:18:52 -0800 (PST) Date: Tue, 13 Feb 2024 03:18:51 -0500 From: Johannes Weiner To: Narcis Garcia Cc: linux-mm@kvack.org, Michal Hocko , Roman Gushchin Subject: Re: swapaccount= commandline option Message-ID: <20240213081851.GA3448692@cmpxchg.org> References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: X-Rspam-User: X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 2B18A4000B X-Stat-Signature: 59189uh4pnz3pycc7z1ga3gp7wknzns3 X-HE-Tag: 1707812333-148343 X-HE-Meta: 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 CJU5fJaA 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000095, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Tue, Feb 13, 2024 at 08:01:37AM +0100, Narcis Garcia wrote: > El 12/2/24 a les 23:37, Yosry Ahmed ha escrit: > > On Sun, Feb 11, 2024 at 1:33 AM Narcis Garcia wrote: > >> > >> Hello, > >> > >> I read this warning on Linux 6.1 boot: > >> The swapaccount= commandline option is deprecated. Please report your > >> usecase to linux-mm@kvack.org if you depend on this functionality. > >> > >> And I want to know if this impacts on LinuX Containers (LXC) swap > >> accounting. > > > > swapaccount= was deprecated in the sense that it is always on now > > (i.e. you cannot do swapaccount=0 anymore). I believe you are using > > swapaccount=1 and want to make sure that swap accounting will still > > work with v6.1, right? > > > > This is the second question we have had about this message [1]. I > > think we need to clarify the warning (and perhaps backport to stable > > kernels). > > > > [1]https://lore.kernel.org/linux-mm/2593755.Xrv9ptJ69j@sinistra.local/ > > > Thank you for answering this question, and sure this clarification is > needed both in documentation and warning message. > I've found deprecation message was commited on 26 Sep 2022. > From what Linux version release, this deprecation is included? Thanks for reporting this. I sent out a patch to only warn when disabling is requested, and clarify the message a bit. The knob was deprecated in Linux 6.1.