From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6525D36BCF2 for ; Mon, 1 Jun 2026 12:51:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780318316; cv=none; b=V8B5hEWO4AIuS5ELoki1E451XTh0emOeE9dpsPdnqzv8DqIm8BHl8u2c7EjoaEfvWlBQy7bpaP/D57nW7tVUo3VOWqDHKr120yWU4EvQkcIKdjI3vcWiNQyruqOnRGN2iVstEW89dez1S3CcB2luNROSXtcEDFe1OxYmIh5ER1g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780318316; c=relaxed/simple; bh=vu09ZKG35OC9QdnZ+NgoYuJb87OPNPcrctHMR8ChaBc=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=iyHXlKeYO0yTwcY9Go1HJPJ4cmyGZxacmYKuafLfzKtEytGoMaznitvfTi+ZsRRYw7B5r12qTpKDtRmsvDbebrZAf7M5gasGRVgssVjjsMP0X6iOUyZo+DKP5RHODqINdMUllLIPUU5KLdeZ8PrfRxz6ksv1KIxbmhtRZoX5uxc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=HZh09f04; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="HZh09f04" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 852061F00893; Mon, 1 Jun 2026 12:51:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1780318315; bh=6UuLLpf/B0APZs2fKhiTHsDQcp/pWBrVBaeWcUNV7xw=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=HZh09f04h0YRCfV7g0NLIJL/AbOBwbVYneaEssCbldYO/BamUNdJP61zTm+S5IR0m YHtWvwJRP2KYaahKT+GUKN1pvMUY4we9NTPAH4dvpM/Y1P0tfOehC7m9nWZgg74UJd Cs5AJMCon4DJq+Du52T/SSpLHZ8e8V0becrh7YePQ0wreIB2XgxSF8EcKTaghX2Yz2 UesKnwV+2Osgq+r//WwhIQp0hLdR0uNQpduKy3lFPoUcHrl3SejbTEUF2xcOaf9UhE PMMehAx0Dhh6FbNrs8PbWRyFe72UO++ZpeBV3wHvfDEh1RuLJ+jixz2XGhybVTONkk ugPCZD1ujtMdQ== Message-ID: <36487122-7cf6-477d-9ad8-8893c187f4fd@kernel.org> Date: Mon, 1 Jun 2026 14:51:50 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] mm: delete stale comment about cachelines Content-Language: en-US To: Brendan Jackman , Andrew Morton , David Hildenbrand , Lorenzo Stoakes , "Liam R. Howlett" , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Kairui Song , Qi Zheng , Shakeel Butt , Barry Song , Axel Rasmussen , Yuanchu Xie , Wei Xu Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Christoph Lameter , Johannes Weiner References: <20260601-zone_stat_item-comment-v1-1-f452dd91d5eb@google.com> From: "Vlastimil Babka (SUSE)" Autocrypt: addr=vbabka@kernel.org; keydata= xsFNBFZdmxYBEADsw/SiUSjB0dM+vSh95UkgcHjzEVBlby/Fg+g42O7LAEkCYXi/vvq31JTB KxRWDHX0R2tgpFDXHnzZcQywawu8eSq0LxzxFNYMvtB7sV1pxYwej2qx9B75qW2plBs+7+YB 87tMFA+u+L4Z5xAzIimfLD5EKC56kJ1CsXlM8S/LHcmdD9Ctkn3trYDNnat0eoAcfPIP2OZ+ 9oe9IF/R28zmh0ifLXyJQQz5ofdj4bPf8ecEW0rhcqHfTD8k4yK0xxt3xW+6Exqp9n9bydiy tcSAw/TahjW6yrA+6JhSBv1v2tIm+itQc073zjSX8OFL51qQVzRFr7H2UQG33lw2QrvHRXqD Ot7ViKam7v0Ho9wEWiQOOZlHItOOXFphWb2yq3nzrKe45oWoSgkxKb97MVsQ+q2SYjJRBBH4 8qKhphADYxkIP6yut/eaj9ImvRUZZRi0DTc8xfnvHGTjKbJzC2xpFcY0DQbZzuwsIZ8OPJCc LM4S7mT25NE5kUTG/TKQCk922vRdGVMoLA7dIQrgXnRXtyT61sg8PG4wcfOnuWf8577aXP1x 6mzw3/jh3F+oSBHb/GcLC7mvWreJifUL2gEdssGfXhGWBo6zLS3qhgtwjay0Jl+kza1lo+Cv BB2T79D4WGdDuVa4eOrQ02TxqGN7G0Biz5ZLRSFzQSQwLn8fbwARAQABzSNWbGFzdGltaWwg QmFia2EgPHZiYWJrYUBrZXJuZWwub3JnPsLBsAQTAQoAWhYhBKlA1DSZLC6OmRA9UCJPp+fM gqZkBQJqFFy6GxSAAAAAAAQADm1hbnUyLDIuNSsxLjEyLDIsMgIbAwUJGtCBUAULCQgHAwUV CgkICwUWAgMBAAIeBQIXgAAKCRAiT6fnzIKmZJIUEADFx/tREzUImHrEwVHeSvDFmA7tJysI UVrlvrM09E7GIuzphzv7jYmo8n3ANpCczLEVr4G0syYQdTigaZgv3+FQDIIzhKih1IHhu1Ei XHlywNWKnQxxQEUNi5Mwx43wQz5XVw9F1A7gtKBKNtfogO511hAbrzagrYajyQacEJ/+sfhZ 9Da8ltHIXD8pcYaHUfQgEusCgmEd9+KrUwrTbckFKmYq5chuE6yJ4J0EmWknL096jIE6CnzF FRslQ3B1UKDjxVsm1ZHfir5NeWszLkTvGFsddFaWTgh8UycESG6VQzKXjjewXu2pG7YQYRpj QKm1W5X2TkwWkXRBZTmfmbhxIUMh3+zf5wQ463rSmDN/8v81tdqBtAW6rH/kzg1GvkaTHXn0 507yEHFzBksk2viAuIxxr7km8+/KARYLIdGtx30EG8cKzAUZOK6WqxtNCsXUJNrVE8CWrCaD icoNu7Fs1c5hmPHdSTnU48ce67449DdnO4neLSNhRiGlMHJgfJUmgrxu/hcYeOZ3haWmEQ2w uW1Mh01OHi8QZHCEyAbABrPs9GUgccc/4eYXX9hIgxfSkYzn8f+8NuIFPWl/0uTvjgqU29FQ SbzOLxHq9439Ox40G5mS5eZXRGxITYR+6TXvRGI6P/264jvflnr/pDGUttaikU+0W+1uxgKH cmYbEc7ATQRbGTU1AQgAn0H6UrFiWcovkh6EXVcl+SeqyO6JHOPm+e9Wu0Vw+VIUvXZVUVVQ La1PQDUi6j00ChlcR66g9/V0sPIcSutacPKfdKYOBvzd4rlhL8rfrdEsQw5ApZxrA8kYZVMh FmBRKAa6wos25moTlMKpCWzTH84+WO5+ziCTsTUZASAToz3RdunTD+vQcHj0GqNTPAHK63sf bAB2I0BslZkXkY1RLb/YhuA6E7JyEd2pilZOrIuBGl/5q2qSakgnAVFWFBR/DO27JuAksYnq +aH8vI0xGvwn75KqSk4UzAkDzWSmO4ZHuahKtQgZNsMYV+PGayRBX9b9zbldzopoLBdqHc4n jQARAQABwsF8BBgBCgAmAhsMFiEEqUDUNJksLo6ZED1QIk+n58yCpmQFAmfIHFQFCRYU6J8A CgkQIk+n58yCpmS2PA//bqN1LfcotmArgElsa+0EGZSQlYgK48pm8WAeTXTngudP9IJ4SuKY HR5RNjHcBeqN+Me0zxRqYzRb8nGanHEkDyf4Im8DQM8d6vbyU+FcPmG4skud4kgS1zMHnlVd SXfSIwKC/hKgdHG8aBV7545Lz9X6Iohea+94wneD0aw/hqF+QWewGZhWJriWAZtvEkzNjQOi 4U9F/trLten/x7bpphDSnDMKJtITbtzATT1Dq7o7VpIUK1nCTQALMuMjKCdi8OdU/+V+R3O4 0PXWvX8qrvqYapVbZ+9KqT74FsuB0Ya9uXwgBF2Q6cRuETZk5vqaqKxzqoQZCO8AOz/58j6O 2RHNy/mZEN+7tJ5Tsq42zVJ4jxsT8b9YplavCMsnBgDeRWhcbYhCyttoL7nYISyWg4kQYZ/P wIV3OuNv2f8iKYsxNsRuClOAF82+gvqOy1/1pprFjy8uo2pkoOrb63aOP3vO5VHnRKgra6dq NcaZ+c6J4H+nEJGi2SkHAUJz5oBzuThvPudLvPA/SK8sKoM01IRxSihev/S/5WLazXB1PGem OCbvzC1IjWJJraxiDJ5IygokapUa2RP7+WBR22skQ3SSl6G107QgWKSyTOGWEaRmV53vxQLV jXuCmzSSasTL60zq5yGrT4/DYQVSNEUiUbG4pYekxJujNeEDkUlky0Y= In-Reply-To: <20260601-zone_stat_item-comment-v1-1-f452dd91d5eb@google.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 6/1/26 13:40, Brendan Jackman wrote: > These comments have been wrong since commit a211c6550efc ("mm: > page_alloc: defrag_mode kswapd/kcompactd watermarks") added > NR_FREE_PAGES_BLOCKS. Since nobody has complained about it in the last > year, it seems unlikely these comments were particularly useful anyway, > so delete them. > > Signed-off-by: Brendan Jackman Acked-by: Vlastimil Babka (SUSE) > --- > include/linux/mmzone.h | 2 -- > 1 file changed, 2 deletions(-) > > diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h > index 1331a7b93f33c..e308f5ac7950a 100644 > --- a/include/linux/mmzone.h > +++ b/include/linux/mmzone.h > @@ -214,7 +214,6 @@ enum numa_stat_item { > #endif > > enum zone_stat_item { > - /* First 128 byte cacheline (assuming 64 bit words) */ > NR_FREE_PAGES, > NR_FREE_PAGES_BLOCKS, > NR_ZONE_LRU_BASE, /* Used only for compaction and reclaim retry */ > @@ -225,7 +224,6 @@ enum zone_stat_item { > NR_ZONE_UNEVICTABLE, > NR_ZONE_WRITE_PENDING, /* Count of dirty, writeback and unstable pages */ > NR_MLOCK, /* mlock()ed pages found and moved off LRU */ > - /* Second 128 byte cacheline */ > #if IS_ENABLED(CONFIG_ZSMALLOC) > NR_ZSPAGES, /* allocated in zsmalloc */ > #endif > > --- > base-commit: 4aedd91eef75addec6eb2702aa0d94625d01458d > change-id: 20260601-zone_stat_item-comment-45d660892420 > > Best regards,