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 6C28BC3DA7F for ; Tue, 13 Aug 2024 02:32:52 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 0349E6B0095; Mon, 12 Aug 2024 22:32:52 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id EFF566B0098; Mon, 12 Aug 2024 22:32:51 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id DC8736B009A; Mon, 12 Aug 2024 22:32:51 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0014.hostedemail.com [216.40.44.14]) by kanga.kvack.org (Postfix) with ESMTP id BD4526B0095 for ; Mon, 12 Aug 2024 22:32:51 -0400 (EDT) Received: from smtpin30.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay09.hostedemail.com (Postfix) with ESMTP id 775E780556 for ; Tue, 13 Aug 2024 02:32:51 +0000 (UTC) X-FDA: 82445649342.30.8B1D8A2 Received: from mail-pl1-f179.google.com (mail-pl1-f179.google.com [209.85.214.179]) by imf22.hostedemail.com (Postfix) with ESMTP id A3D47C0014 for ; Tue, 13 Aug 2024 02:32:49 +0000 (UTC) Authentication-Results: imf22.hostedemail.com; dkim=pass header.d=google.com header.s=20230601 header.b=t3lPsFYb; spf=pass (imf22.hostedemail.com: domain of rientjes@google.com designates 209.85.214.179 as permitted sender) smtp.mailfrom=rientjes@google.com; dmarc=pass (policy=reject) header.from=google.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1723516299; 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: in-reply-to:in-reply-to:references:references:dkim-signature; bh=3aVTU6GrN/ua3kcnjeVYWRKEpbsWVFsVzNGy0iKcBv8=; b=Os5m/PpQJ7RmmMYT+EHWdeQc0GDHz0jW/n/HsbUnHE4bSUudchvRF/y6rD0OetRk+qnXWx HA56Wk3RPByrFHSmS4efQKPmGeVzV3yJkw3nwRfEQ++oF5uFzApF217aJPEaBdS48Y8+1e qe5iTJZG+DjQ/4Zpm4TmgJy6mXIXsB0= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1723516299; a=rsa-sha256; cv=none; b=2xmSAKPyRFIZUNOJF7oNZr/HORvzK1FCC7urV2XEFsGWzF01XyGubnngqt2oUSYExNdUfU pzoJqkTcdfMm4SGkRD4AlQFtZ9glNnqgDel7dJ8WvlbAjDiuIcKY1lOetBPN8XR9H5rLKm ENg+msNlq+BR9kcPuDNqz7u6Gyc7rwo= ARC-Authentication-Results: i=1; imf22.hostedemail.com; dkim=pass header.d=google.com header.s=20230601 header.b=t3lPsFYb; spf=pass (imf22.hostedemail.com: domain of rientjes@google.com designates 209.85.214.179 as permitted sender) smtp.mailfrom=rientjes@google.com; dmarc=pass (policy=reject) header.from=google.com Received: by mail-pl1-f179.google.com with SMTP id d9443c01a7336-1fd7509397bso48895ad.0 for ; Mon, 12 Aug 2024 19:32:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1723516368; x=1724121168; darn=kvack.org; h=mime-version:references:message-id:in-reply-to:subject:cc:to:from :date:from:to:cc:subject:date:message-id:reply-to; bh=3aVTU6GrN/ua3kcnjeVYWRKEpbsWVFsVzNGy0iKcBv8=; b=t3lPsFYb0EW7IecDEtqnMPzfTLSlaIcGM1T7Hv5o/6wrVPrKuYjQ7C9E2tB8xkijvD LjFup5i2YI9O6ADrg+rVTGdqIMJ8hm4R9UyMxZFbvtxAdDgGW4Hk/Ao1y1q7JceZeHt4 Z2TFZYMIE/Sgg4wTR0EoVFB6w3ovJ+FIuhoMP9k/l042sjm6JVKeZR/KkNg58SVaShtj 2uMM7N6IK0rjascEQ137ihwiIXAw3v+GbOCB1VHy4TsTuempd5Vy3HvjQ3huWqj0ctXh pYL1C9/Bv42yvktyinu5PXzXpjD7VZQwmrV5X8eWPP5hUKNOzFEgbU4B0w5rny48lwd3 inyw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1723516368; x=1724121168; h=mime-version:references:message-id:in-reply-to:subject:cc:to:from :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=3aVTU6GrN/ua3kcnjeVYWRKEpbsWVFsVzNGy0iKcBv8=; b=O9REYExf/e6TQNlmt81rvoipVhnrPRVUIuyQT0zvSUDjVXPNAFJGXyIB3mJANib5/U Q43ACd14Ku4R7tvgjNaNJAHlkvGHJNgUU0CIP2EmitNdPg9dEDaTusFgsk3N2pv/hfS2 UW52PA7bLktJoYdM0YDtBaweiELK9OZvKX/7ddu7OKYpBuwVAEY9fCb5glWhpwYoLAg0 HkJKnR9KABZsBw0JzLK4WjVcGXLEMbCHMit1feT4eQYNtH+q2+0u8SFCKaaRQ4FNd9/9 q4r3T91lHtUU4H4n89sIzr0YKH/qjDK2iix1tK4nxPEeApiVuttZdRtwdKojYLbOFi4Y dGuw== X-Forwarded-Encrypted: i=1; AJvYcCXHKREXT9tphdcAaYhutgyJM5sQ4+sqKdNwmohduo0CndVNAT97IaOJl/gcAuhzgOrnHqjDtkAzP58ZSqRHmdc10Kw= X-Gm-Message-State: AOJu0YylRWL994KEe3hcvlSi2XWChBCEF0cDjV1XUVMWjZJ7a19ZMILx /CvAU/mvhd/j1yKIPrIcYfNDRBxDahRnDaT+gUGCndvZRjMHy/MerF2a52Xa8g== X-Google-Smtp-Source: AGHT+IGbmsOcZ9336++yzzgfTCvS2AAZwxSEOLSWnK40IMew7mh4Ep9JrZkA4ZX4ttxi6rRe03pKcQ== X-Received: by 2002:a17:902:ce90:b0:1f9:dc74:6c2b with SMTP id d9443c01a7336-201cdc7ad81mr468925ad.29.1723516368068; Mon, 12 Aug 2024 19:32:48 -0700 (PDT) Received: from [2620:0:1008:15:da50:c231:9581:2fe4] ([2620:0:1008:15:da50:c231:9581:2fe4]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-201cd14ca2fsm3360915ad.93.2024.08.12.19.32.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 12 Aug 2024 19:32:47 -0700 (PDT) Date: Mon, 12 Aug 2024 19:32:46 -0700 (PDT) From: David Rientjes To: Danilo Krummrich cc: akpm@linux-foundation.org, cl@linux.com, penberg@kernel.org, iamjoonsoo.kim@lge.com, vbabka@suse.cz, roman.gushchin@linux.dev, 42.hyeyoo@gmail.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH v2 2/2] mm: krealloc: clarify valid usage of __GFP_ZERO In-Reply-To: <20240812223707.32049-2-dakr@kernel.org> Message-ID: References: <20240812223707.32049-1-dakr@kernel.org> <20240812223707.32049-2-dakr@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-Stat-Signature: ikiorhco41nig6ipjnayenu9wmhm7b1o X-Rspamd-Queue-Id: A3D47C0014 X-Rspam-User: X-Rspamd-Server: rspam08 X-HE-Tag: 1723516369-272077 X-HE-Meta: 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 HKpBTI3K 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.007732, 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 Tue, 13 Aug 2024, Danilo Krummrich wrote: > Properly document that if __GFP_ZERO logic is requested, callers must > ensure that, starting with the initial memory allocation, every > subsequent call to this API for the same memory allocation is flagged > with __GFP_ZERO. Otherwise, it is possible that __GFP_ZERO is not fully > honored by this API. > > Signed-off-by: Danilo Krummrich Acked-by: David Rientjes