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b=YE6ctGjk60A16nqMj4ZQTpZCv3rxMI9gcWW2ZFS+SI23HDp4cwUIee8O4ssFAd56C dkXGJAu7OtbjCzjeO3a72WySCr2mQ8jK1n7tm0iXUHHs4rRYocFe1cYJV9y1+z8LEK I+fBAFxLC5ooKmLgns6NYhi/bElLIkMv/SmwSt3R13VJoH/0ED367vK8Wi2O7C/Hh2 WJd7CLAY6xd3N/UKvYQDoYWCuOxZ08ZEQeJmMFBSksxlZR/GlyUm4LV9RjmM7DWWNS butYXIzFo9kgsU9eLgotKptkn5Mx6OE0D0PVY3vVoTkqjNeDwhhpwVZKIVru6sfZyR 423NRwzmXnaHA== Received: by mail-qv1-f43.google.com with SMTP id 6a1803df08f44-89f68634786so29644576d6.1 for ; Fri, 10 Apr 2026 21:27:59 -0700 (PDT) X-Gm-Message-State: AOJu0YyRMspBbEU/UX+p+v/wkckfu7Yo/ejDykl99VydMeFZW6/i+uCg KoWbbjhq8tfPIZrWLS6RgNuxpWR2fCeIgsvl8nupYRe412ZO74pf+mAf/O4CU62ii0FnAG5ntq4 JFlw5xBG2ojCQumbeb3CLuBlxoTBZk+w= X-Received: by 2002:a05:6214:8094:b0:89c:c3ac:e5b5 with SMTP id 6a1803df08f44-8ac86117d50mr83071306d6.23.1775881678974; Fri, 10 Apr 2026 21:27:58 -0700 (PDT) MIME-Version: 1.0 References: <20260407-mglru-reclaim-v4-0-98cf3dc69519@tencent.com> <20260407-mglru-reclaim-v4-6-98cf3dc69519@tencent.com> In-Reply-To: <20260407-mglru-reclaim-v4-6-98cf3dc69519@tencent.com> From: Barry Song Date: Sat, 11 Apr 2026 12:27:47 +0800 X-Gmail-Original-Message-ID: X-Gm-Features: AQROBzCbyUMQ_wk1cLbKsMRH_Ouly_Mk_U9woSOGUbEbbH4l4y_r6rO_ttqDBQc Message-ID: Subject: Re: [PATCH v4 06/14] mm/mglru: use a smaller batch for reclaim To: kasong@tencent.com Cc: linux-mm@kvack.org, Andrew Morton , Axel Rasmussen , Yuanchu Xie , Wei Xu , Johannes Weiner , David Hildenbrand , Michal Hocko , Qi Zheng , Shakeel Butt , Lorenzo Stoakes , David Stevens , Chen Ridong , Leno Hou , Yafang Shao , Yu Zhao , Zicheng Wang , Kalesh Singh , Suren Baghdasaryan , Chris Li , Vernon Yang , linux-kernel@vger.kernel.org, Qi Zheng , Baolin Wang Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 550F41A0005 X-Stat-Signature: km6z1a4qiuxszojyh1a1rm4nktpg71hy X-Rspam-User: X-HE-Tag: 1775881681-856338 X-HE-Meta: U2FsdGVkX19cNm/3IwuEhqwdn6CpZ3g2PQzjHAc9/vpd7Tv7zBKtBFqfMTqVYJuCPyHS+yxBs/n1qc6U/pcMbVAhnTosSQbwgcHk4FQRC/ka5L79vwG64r1cTPsIHvy/gKZOEUl19zyQqglw8M/7T2GWcDnPHCr86TSeBGgxc9dCQe+coJRTY/wGrTryMG/fcmh7Agvzodl1TCAfIWJwqmNDf5ekYDv+ynz0dpk40W6hAhRY+ut8o3ejgTRb4+IPOwa92Ld48lcM5o38S4ooTFvlA5ZKLVrvAdOYs0ulIqw9OMGt2RlO3oZKaEu6ipOuDprCWSjqU08Yt/XfMi2sqhjeFfoJKBmWww7HSwpaU6lW6o+a79aJPVJgFCP3ytBh2zRoPE7l+GSiZTuX2+X5L45jPBQR1LSAMYKHKhkVsSs2leEANnKdauS8MgOo7L5BDevCGdxXfk8vq982yPfeSpfD6ZxqUR3D69pq5BsCy7e10S5BuZsOUWQVbQeTrfCsnVNRtc5alt/7DavktvrEZ7LW5X38cLGeoSBq+YAcZNHzdgaMriH5LZ75HTc7oM0BxzS7f6yRA6WgG3VD4TSfzkM4GLzIjigtIVKT8JZxbBtjfFPsVHNtQSg/ZAeaaf+wrf3s1fftRpqML1wOTIdH9afw5hLhMzrpymfMkN96C9TyrLeQRc3jESbm8RhvWu8CYlgwFmgOCh19OJTPNu/vpT5dgLv2fEPPM563kUcUTd0tCADc0Io8/pBHJwSG2Dh4gEUSHqjqvurpS8QyFyHQD2vboGAVP/+sCf9Ls2M+lLbdgtugd+ovENc1LP9G1OQZU55Lsb5iPnLvkt8fWFC96NlYbVbw+Fg7dPxDtCB8BWwZ1N9b7nKtvVp8IlBLRdwmyxtDl7pW5jmpj8m/9cJEpzvRe2el4X7+KQGDQyAbU0d7xLCBiKKgRAXWiuberWLfy7HTvFwXtjlhgmIEPsr j7eoNkzf 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Tue, Apr 7, 2026 at 8:05=E2=80=AFPM Kairui Song via B4 Relay wrote: > > From: Kairui Song > > With a fixed number to reclaim calculated at the beginning, making each > following step smaller should reduce the lock contention and avoid > over-aggressive reclaim of folios, as it will abort earlier when the > number of folios to be reclaimed is reached. > > Reviewed-by: Axel Rasmussen > Reviewed-by: Chen Ridong > Reviewed-by: Baolin Wang > Signed-off-by: Kairui Song LGTM, Reviewed-by: Barry Song