From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 5036014B06A for ; Tue, 30 Jul 2024 21:15:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722374128; cv=none; b=c+8HCIn0pVIbt04LQ0VrrAEBf3zd0iCZ+3C4Px7Tax7ECoeVLuWcmKO6uAsMXqtE31E8dl7LNX8N4+3UboZwn1sb0ixYkODUE5jc7UHQt2BqdjHVZD0jmvVwAR/OAknrtGLFrM7BilbHoEzQGxim/X1oqxNpksIPuhby2KZ5AXg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722374128; c=relaxed/simple; bh=JF9WcIZIviOi8WrpLmtOh2Lzs2aF2Vl/O26GQ64Y/98=; h=Date:From:To:Cc:Subject:Message-Id:In-Reply-To:References: Mime-Version:Content-Type; b=f62QJGBBoV+0uD7nriOLCjDfTj8L2ulis/t+wneCYcGPToIGWbwRWMZ1RUdYF4lzuW7sVnnSuut0qbN502sjXfZ2dqJLCW0XMO95cb9x25lb/wVZIldi1D3+STNSjMM8gpFk41vcmyh6aNUMg1/z9DglMabH+XqtgTdise+gKtI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=IFclImUc; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="IFclImUc" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6B793C32782; Tue, 30 Jul 2024 21:15:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1722374127; bh=JF9WcIZIviOi8WrpLmtOh2Lzs2aF2Vl/O26GQ64Y/98=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=IFclImUcY1ntyPlWx/JCWFOXcS1a9B1alIoc99VjJZJ0cItOpYMzfNtGOk6l3sWYo 2S3J1nRdiOd2+fSMaaUCHbyHronK66FPTueaR+3kcMvFMIR8roK8BFl9PiurMMLLIy JacVDEwp0Ruo5TCOm8CAX19LjPmXBxYAI1Bn7Pk8= Date: Tue, 30 Jul 2024 14:15:26 -0700 From: Andrew Morton To: Danilo Krummrich Cc: urezki@gmail.com, hch@infradead.org, vbabka@suse.cz, mhocko@suse.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH 2/4] mm: vrealloc: consider spare memory for __GFP_ZERO Message-Id: <20240730141526.ef8f665b3ccc65d3b41eed22@linux-foundation.org> In-Reply-To: <20240730185049.6244-3-dakr@kernel.org> References: <20240730185049.6244-1-dakr@kernel.org> <20240730185049.6244-3-dakr@kernel.org> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) 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 Content-Transfer-Encoding: 7bit On Tue, 30 Jul 2024 20:49:42 +0200 Danilo Krummrich wrote: > Zero spare memory when shrinking a buffer with __GFP_ZERO. Again, why?