From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f172.google.com (mail-pl1-f172.google.com [209.85.214.172]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2BEE110A2A for ; Tue, 13 Aug 2024 02:32:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723516370; cv=none; b=apQ2QWamBW/gHvPbVfcwJCD64OHpl0xrdZSh2Ot16VKJa0oP8OQxEPkvjxn8Sa6aWlxslarK9pW1tE7hlPAd8ogrGywHGE2JlqEhnhnqAeWR4LXRGzR4LhCS3yuglpkdvXI0QU7ZVVoQCxjjY/01CuTJNyPZ9sah1152y7tu+jA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723516370; c=relaxed/simple; bh=2fGhES2XDVikE0e3z7hR0aiJ7aDoQxNr65BpcdKpwzg=; h=Date:From:To:cc:Subject:In-Reply-To:Message-ID:References: MIME-Version:Content-Type; b=d++se0vEXU99loOBdRbzV60vPfmmyN5v9RFWOxYi8EByC5J1bU8Vf3GQ4B8BkdiGOy9pz/OliznBcDGfzbNGz/+/Sr/iUqGgD/MvsyglNzza9xwqbrG0WbFwQtmZpx6IXgxAo/Ez4xqAIi3hi3bh50KEYg4doTdP+c3PBFzh9HI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=FmMpVOk/; arc=none smtp.client-ip=209.85.214.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="FmMpVOk/" Received: by mail-pl1-f172.google.com with SMTP id d9443c01a7336-1fed726aefcso27315ad.1 for ; Mon, 12 Aug 2024 19:32:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1723516368; x=1724121168; darn=vger.kernel.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=FmMpVOk/i7v76JQ1GCgP6QxfcNQJEDgJqEIqIE1g4oUXkofyCkD5NR7YI2d+RBFwfO hUE6OTStVuINafEv2slpwdAYcKSa3hDqtZIWMkqGb8kBOr3IEJMVpDk/4Wd/Rd2jS5Ai 5BYipWulk1aFVByXtQMM2VU2DI/FoyhdQ0kM6U0INZIhiqO7v8pvo7f8l/MWCFiO3BEF KPq2YRwVbyO16rB25zA151l2mR58Dq2ZU5H2NGIJkef2a9epv2sbpo4+Rh/Ee0K1wKJR GhQo4AKOJ1LocXT6+4KhCniMSVCkExGfO0J2O67e8GHZY0vvJh+v58S5LfugVEimrPaI dG2w== 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=uzMjMkd7JII8sjy5jF2Xy2nkUMtaR5DtFFmYHR3Mtm/ZSW0AZwnnhDg5NGzwWv4cKG gjtKd6T8UoB/kW9KoeyTeAq7Y+r49vW4JQzi6GYp0n+AEjMpIUETZ7mSS+XQwlewDxAh j0UU8JXwvmNne/qUgRz3XnwtHI4g8zLvo5ZotGS3ihO/n7SmxIe/YdHbhPur/HsQz+B4 WFslRTaruAjyPdUUWscFhr1A98gX55XBO5m8QslnV9K+d95+6QSFvysP3S/6hin0Unad vlVNbEaywLwId+aHuNZ01ADkmJoQRxWkSphQdu1gGEotUnf/cy+b+Sk/+DTXk3Y0b1no 1D/Q== X-Forwarded-Encrypted: i=1; AJvYcCUg4a7l1lMfQ2022IyVurfXQ0CXDv90hb/DwFXWQlx3cyRf1KhXEWNrBHPTzhN1EQcmhvPeEfHdALVbtozNa/bYsu3h/AqjQnAete1+ X-Gm-Message-State: AOJu0YznOSZsty6GMpFwVay52G+XIttQzuxGHz452bL1e2mU5iRcynqy PlRBb+Ox+/oV7Tvm/OLsjf1Gd6ZjwljC8oeipLovhSXpmt3i2y5YX61i1EkSeJk7xyl5gNcc38k hbw== 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> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII 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