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b=maMdnIWkF/k0CEl1/wG66nhX5O+AKCirshD5t3aZABep2ejOazOLulBkrPP8HZh6e g8aQse/iYVDueyL7axACXOq5H6snn87RL10izSFOzRCvJHAGV586zGKMEUVDrv7Nvc a11IxNRkDivBLUv1DymNfo5CLWc/cPUgzA7Qy8idC0W0eGuOhQ1DAH32JRA91q6dGY BVxg1bnPaT7wBv9UUxHYtt1oM4cAbbEwX+GxDwupyLSpBglcJCINlkRhktnMObnvFx n0/Vw7ZQYiBC+z602mptQJCJv8Xbi1oKWzamKlA5gCb9WCA3QaNCLFRsHpit3tP5p9 M451sfa+0Lh1A== From: SeongJae Park To: Johannes Weiner Cc: SeongJae Park , Andrew Morton , Yosry Ahmed , Nhat Pham , Chengming Zhou , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 2/3] mm: remove unused zpool layer Date: Fri, 29 Aug 2025 12:07:28 -0700 Message-Id: <20250829190728.60675-1-sj@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250829162212.208258-3-hannes@cmpxchg.org> References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 5787818000F X-Rspam-User: X-Stat-Signature: dbfjbonhg7qczk3u47tymq3rmwbut6xt X-Rspamd-Server: rspam09 X-HE-Tag: 1756494451-660880 X-HE-Meta: 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 YfpMi5sy rzCnnfSzoqHqiIq4NRe4hejHc2kE1iOGqEk0bFqGoA2RFevR3pCcCIOcjM5ekqbFR0jTchQHjpJNsoc6pvqxaJuU/gg5Iumim4kQukSmmv1qXzRsrDwqRLy4lofPwuVYuQeZi6FfwVGzuXpDpdgzUk/Fp9KbdyIwrXFZI231vwtQlTaaEIQYasAa0S8Y8dAJYDvgCad6km8J8R+JUKraw9l4OcuHxcJiFKY1rTTM1Bp1qF3I2Tadz2XyWSE6THzVuh0v0UmwkQFMZ0NDz8zOd3EwLojDkMgR8H9R+ 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: List-Subscribe: List-Unsubscribe: On Fri, 29 Aug 2025 17:15:27 +0100 Johannes Weiner wrote: > With zswap using zsmalloc directly, there are no more in-tree users of > this code. Remove it. > > Signed-off-by: Johannes Weiner [...] > --- a/Documentation/admin-guide/mm/zswap.rst > +++ b/Documentation/admin-guide/mm/zswap.rst [...] > When a swap page is passed from swapout to zswap, zswap maintains a mapping > -of the swap entry, a combination of the swap type and swap offset, to the zpool > -handle that references that compressed swap page. This mapping is achieved > -with a red-black tree per swap type. The swap offset is the search key for the > -tree nodes. Nit. s/red-black tree/xarray/ ? Other than that, Acked-by: SeongJae Park Thanks, SJ [...]