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 X-Spam-Level: X-Spam-Status: No, score=-0.7 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CEAEFC2BA83 for ; Thu, 13 Feb 2020 15:44:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A7BCA20675 for ; Thu, 13 Feb 2020 15:44:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=shutemov-name.20150623.gappssmtp.com header.i=@shutemov-name.20150623.gappssmtp.com header.b="h1O9Lk/3" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387849AbgBMPoF (ORCPT ); Thu, 13 Feb 2020 10:44:05 -0500 Received: from mail-lf1-f68.google.com ([209.85.167.68]:34848 "EHLO mail-lf1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728441AbgBMPoA (ORCPT ); Thu, 13 Feb 2020 10:44:00 -0500 Received: by mail-lf1-f68.google.com with SMTP id z18so4605696lfe.2 for ; Thu, 13 Feb 2020 07:43:58 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=shutemov-name.20150623.gappssmtp.com; s=20150623; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=K6511DdGifH8XUHZx9YT0KbpkCqEo3UTWf5Na2Wavuk=; b=h1O9Lk/39Nx/ytmuPKvu48NGNZk+XUil67BnaQeOVqW/Cxkpqv48zOF9nGwuUWlurM xa/u43X71SKX6da2a5fB2v7S6PgQbQBl2ssMQ94F9rVUv8LKIUdVh9zDvGRo4D5v6+nh LuEjK1SL9jGH9n9oTsRgAnTMwm6XTkEOF5/XYPKhJ4cpujsioAoAN8FERx3YESyPw37h 9NEXptd6Gt16Vof39x76tD1yi5FL8D3RgfFYOqkR73ihPA21YsLTzKCgkmtI+79zgECg sL1BpHotERgS2c80OI6FTeoS+pGgJOQg0Eiig6Hakw1DtvSJOGUrK1sCxYJwoULIUzjm 1cnA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=K6511DdGifH8XUHZx9YT0KbpkCqEo3UTWf5Na2Wavuk=; b=pf6BEmtts+wFxMn5xrr77xu7wY5xCIAAFi5yRA0nVhS5Df+9Pd+LnXAiJiRC/TpEdU NudUEv4fklwulkk/UP2k1cy8Pc8A1bkw42FQUUEU1gIHIHsYLXWePL1gPfaCHHPLyQvB FsHkDqX2b2LnqNnztfL0YM4ETHV0jjcvryw2AgFsshu1OsHng2h/8TAWSD/oGbsKL8lI 2kHUnXOvt/BYc3JXIGJQz2/u5mKyK4Iw/7yTFVGdt9CZelXVv0Fw8mEAPIykgxow3Kuh qApeTupSego72NIIFT7PXgM0jGx/DbQ+QmUZlXZaIoVB0ZbrIhlNTiizyE/crtX83TOe fx0w== X-Gm-Message-State: APjAAAVXRH7x1KNxaFXfGEriG0vtn4rNO+ySByTrD+PapkfFQrmUasax phSW4gun5PNbNVkSzu405zSoVQ== X-Google-Smtp-Source: APXvYqxrBJSTTk3KS21AJKxD2y7eTX8gC2feRkJ1tSpYCm6mG9Y6yhHM7jH/gQZsD+JKdEUN74SLWA== X-Received: by 2002:a19:cb17:: with SMTP id b23mr9726567lfg.201.1581608638158; Thu, 13 Feb 2020 07:43:58 -0800 (PST) Received: from box.localdomain ([86.57.175.117]) by smtp.gmail.com with ESMTPSA id u16sm1695370ljo.22.2020.02.13.07.43.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 13 Feb 2020 07:43:57 -0800 (PST) Received: by box.localdomain (Postfix, from userid 1000) id C4400100F25; Thu, 13 Feb 2020 18:44:19 +0300 (+03) Date: Thu, 13 Feb 2020 18:44:19 +0300 From: "Kirill A. Shutemov" To: Matthew Wilcox Cc: linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 11/25] fs: Make page_mkwrite_check_truncate thp-aware Message-ID: <20200213154419.szxgd5tv2tjxmlz7@box> References: <20200212041845.25879-1-willy@infradead.org> <20200212041845.25879-12-willy@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200212041845.25879-12-willy@infradead.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Feb 11, 2020 at 08:18:31PM -0800, Matthew Wilcox wrote: > From: "Matthew Wilcox (Oracle)" > > If the page is compound, check the appropriate indices and return the > appropriate sizes. Is it guarnteed that the page is never called on tail page? -- Kirill A. Shutemov