From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id C0B4BC2BBCA for ; Tue, 25 Jun 2024 19:05:12 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 3A57F6B0088; Tue, 25 Jun 2024 15:05:12 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 32DAA6B009F; Tue, 25 Jun 2024 15:05:12 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 159796B00A4; Tue, 25 Jun 2024 15:05:12 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0013.hostedemail.com [216.40.44.13]) by kanga.kvack.org (Postfix) with ESMTP id E21116B0088 for ; Tue, 25 Jun 2024 15:05:11 -0400 (EDT) Received: from smtpin26.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay03.hostedemail.com (Postfix) with ESMTP id 7DB8DA0551 for ; Tue, 25 Jun 2024 19:05:11 +0000 (UTC) X-FDA: 82270338822.26.D040FC2 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by imf27.hostedemail.com (Postfix) with ESMTP id 3569540027 for ; Tue, 25 Jun 2024 19:05:09 +0000 (UTC) Authentication-Results: imf27.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b=dfgvA9QW; spf=pass (imf27.hostedemail.com: domain of david@redhat.com designates 170.10.129.124 as permitted sender) smtp.mailfrom=david@redhat.com; dmarc=pass (policy=none) header.from=redhat.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1719342295; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=r9TwRfjhR/DW0oOD+pu4Z2razu3lSRcMly0hukJuRV4=; b=FDajsl3BfRl5NEklsZKTxVhWixlKWo6f8kwBHZ+VkNQcsDE2JbsPC+49e2940SWbq+z9rg KABruJyB3jjrat/604tg0KN7BYZs7qeVDMWNsQeC5PufwbL6gw5Q6D9mAsSUisEXutmnAz 3it9ikO6F+udY+HWvCc5yZf7Iq3BAP0= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1719342295; a=rsa-sha256; cv=none; b=pdMFK3Uxq7GtlJLu8jMkiRAADHx2h4I0wa4FyH4TPzsZ15DX1le2uEY5GUnQJI6Og/5kcN OjsA26uUdh35m4SCYVcYhubKRyjSD8r0IG6CglokP8La3uMCVaF0Somb+iMBMxnl2QDoDt DgaQd/3yJ2KR2mGNmPxZWjcntJHoWiI= ARC-Authentication-Results: i=1; imf27.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b=dfgvA9QW; spf=pass (imf27.hostedemail.com: domain of david@redhat.com designates 170.10.129.124 as permitted sender) smtp.mailfrom=david@redhat.com; dmarc=pass (policy=none) header.from=redhat.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1719342308; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:autocrypt:autocrypt; bh=r9TwRfjhR/DW0oOD+pu4Z2razu3lSRcMly0hukJuRV4=; b=dfgvA9QWPc1rooiLY+qKmsZKw29x3G8OguXHuUAYkAHm9zFHjE1DNFyB44ugrhRwEByC7W e8zZhHz24nDEFeVioWLr3t5tWLgeidTugA3gd0hvDu5xMfiLABVZ0MPme9hWPWobeNHYnA ID17vMM98GVlye1oX/CtXQW9Pf8B6uc= Received: from mail-wr1-f71.google.com (mail-wr1-f71.google.com [209.85.221.71]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-39-YVfXQxM4NqGJWl_uiMkvZg-1; Tue, 25 Jun 2024 15:05:06 -0400 X-MC-Unique: YVfXQxM4NqGJWl_uiMkvZg-1 Received: by mail-wr1-f71.google.com with SMTP id ffacd0b85a97d-362a0c1041dso2490138f8f.1 for ; Tue, 25 Jun 2024 12:05:05 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1719342305; x=1719947105; h=content-transfer-encoding:in-reply-to:organization:autocrypt :content-language:from:references:cc:to:subject:user-agent :mime-version:date:message-id:x-gm-message-state:from:to:cc:subject :date:message-id:reply-to; bh=r9TwRfjhR/DW0oOD+pu4Z2razu3lSRcMly0hukJuRV4=; b=Tb6JNWzpA2BCjGl0Q0YckKtHpDawxYoNevH7SkmY9s57DwhA5TpMxcvg37zakHN/sB ZqWk9mYWqtzhzqW+bB5QV8QjFK4YbWpNGgMQbX1XeH3KuXw4OMeDCYxUXKqFxVuUi48S L8GWxkWHD7W4Yv634Lx+7v8r+2vgpcqxOIP8l2gn+bJGVlFfoXb+EMVG+F/sX8powhXx pKoMV0cDYV8R5sgLYmZVkUGxzu6hp8thtN9QX+N5P5ToHE3C+x5gM2RjPi6BS5rnnCvs xNubnU8l6LIS75RGVvDFvvEuFKR+3YucnD/8nHFc8d9cn3OKqXFwXUte8WJEpgo9LTyz Gc6w== X-Forwarded-Encrypted: i=1; AJvYcCWKW5nqXTp56YzzGsWpbVYzFWIyLJiCiFn+LTUx8xB19YTjUxTTZ5NvKshPZ6J5E6hsQOTFLn03WbTMHAdWcTmXRYU= X-Gm-Message-State: AOJu0YwbQjcSs3xHdKyG5Ul7/GCvqhoDiBy0xXPTF5xcIATUQANo29FL 0/XmTsmGWHla2HLbM82Z2yGmoAmRfCDBccvdl/ViHPzNcitJF68qX1Wyh8T7p7iPs903hkjV2GA rQUeXPurTNzOLTG1yBVmWtJIAaxTcL7aIkQmoUUj4xjUyGBdV X-Received: by 2002:a05:6000:1f83:b0:366:f496:c0c2 with SMTP id ffacd0b85a97d-366f496c101mr5062648f8f.6.1719342305090; Tue, 25 Jun 2024 12:05:05 -0700 (PDT) X-Google-Smtp-Source: AGHT+IFj78+1ZCxmIXmWK2vLZFgpvuBZks+468mBLbYCeAcG8sI8G169pp6JRcnrlNQo2bKmT4lRKA== X-Received: by 2002:a05:6000:1f83:b0:366:f496:c0c2 with SMTP id ffacd0b85a97d-366f496c101mr5062633f8f.6.1719342304668; Tue, 25 Jun 2024 12:05:04 -0700 (PDT) Received: from [192.168.1.34] (p548825e3.dip0.t-ipconnect.de. [84.136.37.227]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3663a8cb6d2sm13657628f8f.111.2024.06.25.12.05.03 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 25 Jun 2024 12:05:04 -0700 (PDT) Message-ID: Date: Tue, 25 Jun 2024 21:05:02 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 0/4] mm/filemap: Limit page cache size to that supported by xarray To: Andrew Morton Cc: Gavin Shan , linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, djwong@kernel.org, willy@infradead.org, hughd@google.com, torvalds@linux-foundation.org, zhenyzha@redhat.com, shan.gavin@gmail.com References: <20240625090646.1194644-1-gshan@redhat.com> <20240625113720.a2fa982b5cb220b1068e5177@linux-foundation.org> <33d9e4b3-4455-4431-81dc-e621cf383c22@redhat.com> <20240625115855.eb7b9369c0ddd74d6d96c51e@linux-foundation.org> From: David Hildenbrand Autocrypt: addr=david@redhat.com; keydata= xsFNBFXLn5EBEAC+zYvAFJxCBY9Tr1xZgcESmxVNI/0ffzE/ZQOiHJl6mGkmA1R7/uUpiCjJ dBrn+lhhOYjjNefFQou6478faXE6o2AhmebqT4KiQoUQFV4R7y1KMEKoSyy8hQaK1umALTdL QZLQMzNE74ap+GDK0wnacPQFpcG1AE9RMq3aeErY5tujekBS32jfC/7AnH7I0v1v1TbbK3Gp XNeiN4QroO+5qaSr0ID2sz5jtBLRb15RMre27E1ImpaIv2Jw8NJgW0k/D1RyKCwaTsgRdwuK Kx/Y91XuSBdz0uOyU/S8kM1+ag0wvsGlpBVxRR/xw/E8M7TEwuCZQArqqTCmkG6HGcXFT0V9 PXFNNgV5jXMQRwU0O/ztJIQqsE5LsUomE//bLwzj9IVsaQpKDqW6TAPjcdBDPLHvriq7kGjt WhVhdl0qEYB8lkBEU7V2Yb+SYhmhpDrti9Fq1EsmhiHSkxJcGREoMK/63r9WLZYI3+4W2rAc UucZa4OT27U5ZISjNg3Ev0rxU5UH2/pT4wJCfxwocmqaRr6UYmrtZmND89X0KigoFD/XSeVv jwBRNjPAubK9/k5NoRrYqztM9W6sJqrH8+UWZ1Idd/DdmogJh0gNC0+N42Za9yBRURfIdKSb B3JfpUqcWwE7vUaYrHG1nw54pLUoPG6sAA7Mehl3nd4pZUALHwARAQABzSREYXZpZCBIaWxk ZW5icmFuZCA8ZGF2aWRAcmVkaGF0LmNvbT7CwZgEEwEIAEICGwMGCwkIBwMCBhUIAgkKCwQW AgMBAh4BAheAAhkBFiEEG9nKrXNcTDpGDfzKTd4Q9wD/g1oFAl8Ox4kFCRKpKXgACgkQTd4Q 9wD/g1oHcA//a6Tj7SBNjFNM1iNhWUo1lxAja0lpSodSnB2g4FCZ4R61SBR4l/psBL73xktp rDHrx4aSpwkRP6Epu6mLvhlfjmkRG4OynJ5HG1gfv7RJJfnUdUM1z5kdS8JBrOhMJS2c/gPf wv1TGRq2XdMPnfY2o0CxRqpcLkx4vBODvJGl2mQyJF/gPepdDfcT8/PY9BJ7FL6Hrq1gnAo4 3Iv9qV0JiT2wmZciNyYQhmA1V6dyTRiQ4YAc31zOo2IM+xisPzeSHgw3ONY/XhYvfZ9r7W1l pNQdc2G+o4Di9NPFHQQhDw3YTRR1opJaTlRDzxYxzU6ZnUUBghxt9cwUWTpfCktkMZiPSDGd KgQBjnweV2jw9UOTxjb4LXqDjmSNkjDdQUOU69jGMUXgihvo4zhYcMX8F5gWdRtMR7DzW/YE BgVcyxNkMIXoY1aYj6npHYiNQesQlqjU6azjbH70/SXKM5tNRplgW8TNprMDuntdvV9wNkFs 9TyM02V5aWxFfI42+aivc4KEw69SE9KXwC7FSf5wXzuTot97N9Phj/Z3+jx443jo2NR34XgF 89cct7wJMjOF7bBefo0fPPZQuIma0Zym71cP61OP/i11ahNye6HGKfxGCOcs5wW9kRQEk8P9 M/k2wt3mt/fCQnuP/mWutNPt95w9wSsUyATLmtNrwccz63XOwU0EVcufkQEQAOfX3n0g0fZz Bgm/S2zF/kxQKCEKP8ID+Vz8sy2GpDvveBq4H2Y34XWsT1zLJdvqPI4af4ZSMxuerWjXbVWb T6d4odQIG0fKx4F8NccDqbgHeZRNajXeeJ3R7gAzvWvQNLz4piHrO/B4tf8svmRBL0ZB5P5A 2uhdwLU3NZuK22zpNn4is87BPWF8HhY0L5fafgDMOqnf4guJVJPYNPhUFzXUbPqOKOkL8ojk CXxkOFHAbjstSK5Ca3fKquY3rdX3DNo+EL7FvAiw1mUtS+5GeYE+RMnDCsVFm/C7kY8c2d0G NWkB9pJM5+mnIoFNxy7YBcldYATVeOHoY4LyaUWNnAvFYWp08dHWfZo9WCiJMuTfgtH9tc75 7QanMVdPt6fDK8UUXIBLQ2TWr/sQKE9xtFuEmoQGlE1l6bGaDnnMLcYu+Asp3kDT0w4zYGsx 5r6XQVRH4+5N6eHZiaeYtFOujp5n+pjBaQK7wUUjDilPQ5QMzIuCL4YjVoylWiBNknvQWBXS lQCWmavOT9sttGQXdPCC5ynI+1ymZC1ORZKANLnRAb0NH/UCzcsstw2TAkFnMEbo9Zu9w7Kv AxBQXWeXhJI9XQssfrf4Gusdqx8nPEpfOqCtbbwJMATbHyqLt7/oz/5deGuwxgb65pWIzufa N7eop7uh+6bezi+rugUI+w6DABEBAAHCwXwEGAEIACYCGwwWIQQb2cqtc1xMOkYN/MpN3hD3 AP+DWgUCXw7HsgUJEqkpoQAKCRBN3hD3AP+DWrrpD/4qS3dyVRxDcDHIlmguXjC1Q5tZTwNB boaBTPHSy/Nksu0eY7x6HfQJ3xajVH32Ms6t1trDQmPx2iP5+7iDsb7OKAb5eOS8h+BEBDeq 3ecsQDv0fFJOA9ag5O3LLNk+3x3q7e0uo06XMaY7UHS341ozXUUI7wC7iKfoUTv03iO9El5f XpNMx/YrIMduZ2+nd9Di7o5+KIwlb2mAB9sTNHdMrXesX8eBL6T9b+MZJk+mZuPxKNVfEQMQ a5SxUEADIPQTPNvBewdeI80yeOCrN+Zzwy/Mrx9EPeu59Y5vSJOx/z6OUImD/GhX7Xvkt3kq Er5KTrJz3++B6SH9pum9PuoE/k+nntJkNMmQpR4MCBaV/J9gIOPGodDKnjdng+mXliF3Ptu6 3oxc2RCyGzTlxyMwuc2U5Q7KtUNTdDe8T0uE+9b8BLMVQDDfJjqY0VVqSUwImzTDLX9S4g/8 kC4HRcclk8hpyhY2jKGluZO0awwTIMgVEzmTyBphDg/Gx7dZU1Xf8HFuE+UZ5UDHDTnwgv7E th6RC9+WrhDNspZ9fJjKWRbveQgUFCpe1sa77LAw+XFrKmBHXp9ZVIe90RMe2tRL06BGiRZr jPrnvUsUUsjRoRNJjKKA/REq+sAnhkNPPZ/NNMjaZ5b8Tovi8C0tmxiCHaQYqj7G2rgnT0kt WNyWQQ== Organization: Red Hat In-Reply-To: <20240625115855.eb7b9369c0ddd74d6d96c51e@linux-foundation.org> X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 3569540027 X-Stat-Signature: ehm4yowe8emiq7ssum4cu8pddwyttcqm X-Rspamd-Server: rspam09 X-Rspam-User: X-HE-Tag: 1719342309-474326 X-HE-Meta: U2FsdGVkX1+jQMtALg4bDy4Cw3dGE0T1fT7bpQJ8r6DU3rk51h8bm9t6RPs3i2nL86ZJPsHBV2eqocuqIylnDny+D2cihvAicxFWxnsQFhSxpVomxS48c9enF2PDzQNBdo9Y7K3JDsdtYyzJ90FTlPGF8Qc6ja2zXR76+YadSCwdsKL1s40u809pDWw7roM5hIdboDQkX1beFZN+zeZE2VH+qK4+Ok+852h9gS0h3tC3qIkkxCly8mlrONH0YUubKKQhFnHAp1DUPZ+OfY3CvDfKc1EsjcZw+yuvDrCT3AOBXTa9RrZLyUiuf3ktuSu7qnU7LPz9p+2RI58Z5oo3Y67/rQsGhu2WLbArCf+i1XMBTf+RFFPOVH2WQ2+avuhdYtoHYBVXP9KWcnlslTsjh04mAtRaxWM0fFlNlOM3sMvKVIVxTwzufVDf3ftk6bIArNIHeO4NPXX1BGuZPwtUFINpLjWGx9hrkXsNyxwIN4xsKhbB1dsGsxTjLMomdkhmEqylkevksnIDFR0qrrcxLErFd3V66t3UpWcuoVRl3KkUkJVkmWh7Mf8NNY5IKe+SdDsp7BZFqPw4CAGNEQbvkUEPnBpGkN4q7A2ZH6EsWLLYrYaixPWrBvuLCNHLCQIx5Ufpn3XbiXowC6HF/RsEsx0KCZ7t6tvoW4sCkgcUneXcbGP4y3//1Yy5Qzldt4S+fWmAQfwTM3PTsUNaxz6W0Ub/vLb1XbDoM23szFoYLPfSzugcPhwNT7wr1D8+EqGbmO4DRqSBo/RrunqfyO+vKpGee5TKymAFlxYnQoGSchlOBr1I4mveP9XmveRHMPFFt3hxWDtDGR+HX+el/VM0TOx/jVBEDPJj5bH6cYxY9Wpa2fdjJi7Uw9jmChYzViNOU0PvR42nTpUIY/r9RDwlOGO7xR3rvxhNVfUNCIpu9SoUZaWVvETCJzQKNI2eJtnob673XRL8/c9i7DJdOPN bVEQclQb yoRamAj4ZPbzNsX8vNYLmLC0AyN+BA3bS60p9dHOjOEsRQN5TMeZbZdq2mhLVFEj7RGpZC3+BzbPXXkSh3gqWgNmlunJcb1OLN1ZhtEMok2fCNUt3u9gU9wXIatRNMTD6knXykHoMGHLuY4w5Z5jnWNg4MXh31imqCqn5mOytHaLeUJKpCM+PqTysmAh5Jtv4Fe5wxmeL4hcLUx1tNjQMorVt/MugPgsyHW5rvfmERcxLs0KYjNdlpRIyMLX4F+E4OV2ndpVoOFvLOiiEFN9pc4WlGl2UyemCu4/MehQJpWj9BwFJQIZxw276TFz+mfqwZsk4lmx/xjty6cPs88ZywwqTBqQhG3N/EWZdqxT541cxWzfg5xDYQdY8xE2tXA7VAR4Y1F7yV/GaHhodh6XQXkUF6d8BAse2qRGHgLmkPI8ucieZ/0YBb5UiIw== 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 25.06.24 20:58, Andrew Morton wrote: > On Tue, 25 Jun 2024 20:51:13 +0200 David Hildenbrand wrote: > >>> I could split them and feed 1&2 into 6.10-rcX and 3&4 into 6.11-rc1. A >>> problem with this approach is that we're putting a basically untested >>> combination into -stable: 1&2 might have bugs which were accidentally >>> fixed in 3&4. A way to avoid this is to add cc:stable to all four >>> patches. >>> >>> What are your thoughts on this matter? >> >> Especially 4 should also be CC stable, so likely we should just do it >> for all of them. > > Fine. A Fixes: for 3 & 4 would be good. Otherwise we're potentially > asking for those to be backported further than 1 & 2, which seems > wrong. 4 is shmem fix, which likely dates back a bit longer. > > Then again, by having different Fixes: in the various patches we're > suggesting that people split the patch series apart as they slot things > into the indicated places. In other words, it's not a patch series at > all - it's a sprinkle of independent fixes. Are we OK thinking of it > in that fashion? The common themes is "pagecache cannot handle > order-11", #1-3 tackle "ordinary" file THP, #4 tackles shmem THP. So I'm not sure we should be splitting it apart. It's just that shmem THP arrived before file THP :) -- Cheers, David / dhildenb