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b=Vfb5/xl2D6cFVufmN9AgwcMsKw1pO7MWBNmrzth6G20i6NIrAOoQRfS4d3aolT5CT Fc+qS18dt55PfXjcLXiM0gpZu2Jn37M3tePsHXAvQxCvRPA9x8fMHZU7iHSpvgMkYV Ma4Z3gU0I3NFuBoVB8ZpwkpeCpPbJvuGIXV7L/R2WbSvNxHBHjrQTiQlheUPriEk+L /1qDVxBU/eoul8k3gQNPYaskb4XVjN5lyn+bi+zaVwTieM2jHpmJA9Tr+RtGKE0NJU n/itTekwiUKW59agJ9RoE18udAVs7LGTWv2abZ0WEUD0RX9xFlDB8tpFFLG0DefWUd TuxgoOQMIBFqw== From: Jonathan Corbet To: Nhat Pham Cc: hannes@cmpxchg.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, kernel-team@meta.com, akpm@linux-foundation.org Subject: Re: [PATCH] Docs/admin-guide/mm/zswap: remove zsmalloc's lack of writeback warning In-Reply-To: <20230106220016.172303-1-nphamcs@gmail.com> References: <20230106220016.172303-1-nphamcs@gmail.com> Date: Wed, 11 Jan 2023 16:13:02 -0700 Message-ID: <87mt6ovf5t.fsf@meer.lwn.net> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Rspamd-Queue-Id: E921A40014 X-Stat-Signature: 3655smzk9jq35e6yz7a7umuekbgcrky6 X-Rspam-User: X-Rspamd-Server: rspam08 X-HE-Tag: 1673478784-960618 X-HE-Meta: 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 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: Nhat Pham writes: > Writeback has been implemented for zsmalloc, so this warning no longer > holds. > > Suggested-by: Thomas Wei=C3=9Fschuh > Signed-off-by: Nhat Pham > --- > Documentation/admin-guide/mm/zswap.rst | 4 +--- > 1 file changed, 1 insertion(+), 3 deletions(-) > > diff --git a/Documentation/admin-guide/mm/zswap.rst b/Documentation/admin= -guide/mm/zswap.rst > index f67de481c7f6..6dd74a18268b 100644 > --- a/Documentation/admin-guide/mm/zswap.rst > +++ b/Documentation/admin-guide/mm/zswap.rst > @@ -70,9 +70,7 @@ e.g. ``zswap.zpool=3Dzbud``. It can also be changed at = runtime using the sysfs > The zbud type zpool allocates exactly 1 page to store 2 compressed pages= , which > means the compression ratio will always be 2:1 or worse (because of half= -full > zbud pages). The zsmalloc type zpool has a more complex compressed page > -storage method, and it can achieve greater storage densities. However, > -zsmalloc does not implement compressed page eviction, so once zswap fill= s it > -cannot evict the oldest page, it can only reject new pages. > +storage method, and it can achieve greater storage densities. >=20=20 Applied, thanks. jon