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d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=as3BYd5V48LzAfXq5MM61GLeWE7HSlJgIWf5MOeOsaA=; b=ifmbf8I/3Cz76tAA2rjs8TqoHKVMAX74ih9txKECDEQ+x8ChKv1Bv5BDM6XtSlOhP+ tWV9D5fHTNDBZOouuX6sMKg2eIV9/C32ifKRJxmDIKKtN0ptpMIrjr1oFYgrkV6v7BNp JeMAIxIgnG2gLeEwAzP9s8MWI9HRB4NZlsWuQp1Nd6pHnnCuGftN4ojFv7iobnvHbyaS Rm31OnwQNKjGbaEKvq/m+0jElQNrLRwYnRmE33Ln2zAR7WnH6jbUeBztCl6Xbmd+nYEL wcdZ6mpgI/fWmHPqnxoFPXjiC8iH8ILBvCYQetsyaZP1X9LHlbR4wHbT6Hufg6YxjmM/ D2gg== X-Gm-Message-State: AOAM530vrsfcWxo9qFH/Rh7Kr7pLxWiommDIWgcEJZP4KdcJbKPxhBKy 7vUZmlzKZr/iPcNaKoL94du4AWb1w95z290Eov3kXA== X-Google-Smtp-Source: ABdhPJysoKK5Xdn8qL8s61C5Rb9q6OqJQys+vgn0AbALfz2jYuE8WERfuDUMop/1lJ26i6Qub3Awsm6YywCOYSiB0Kk= X-Received: by 2002:a19:4854:: with SMTP id v81mr11754lfa.189.1590615358686; Wed, 27 May 2020 14:35:58 -0700 (PDT) MIME-Version: 1.0 References: <20200527182958.252402-1-shakeelb@google.com> <20200527194148.GA47905@cmpxchg.org> <20200527134650.18b3fb3f0be85bb73037da20@linux-foundation.org> In-Reply-To: <20200527134650.18b3fb3f0be85bb73037da20@linux-foundation.org> From: Shakeel Butt Date: Wed, 27 May 2020 14:35:47 -0700 Message-ID: Subject: Re: [PATCH resend 3/3] mm: fix LRU balancing effect of new transparent huge pages To: Andrew Morton Cc: Johannes Weiner , Mel Gorman , Roman Gushchin , Michal Hocko , Minchan Kim , Rik van Riel , Linux MM , LKML Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: CB9281802151B X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam05 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 Wed, May 27, 2020 at 1:46 PM Andrew Morton wrote: > > On Wed, 27 May 2020 15:41:48 -0400 Johannes Weiner wrote: > > > On Wed, May 27, 2020 at 11:29:58AM -0700, Shakeel Butt wrote: > > > From: Johannes Weiner > > > > > > Currently, THP are counted as single pages until they are split right > > > before being swapped out. However, at that point the VM is already in > > > the middle of reclaim, and adjusting the LRU balance then is useless. > > > > > > Always account THP by the number of basepages, and remove the fixup > > > from the splitting path. > > > > > > Signed-off-by: Johannes Weiner > > > Signed-off-by: Shakeel Butt > > > > This is now already in mm as part of the "mm: balance LRU lists based > > on relative thrashing" series that I sent out last week and where it > > was originally from. > > Yup. I hope [1/3] and [2/3] weren't urgent? No urgency.