From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mta1.formilux.org (mta1.formilux.org [51.159.59.229]) (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 8D0BB296BA9 for ; Sat, 2 May 2026 04:40:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=51.159.59.229 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777696857; cv=none; b=eMDg9xGmDn1PNumVNHEq24Skk1hl4jxCTg5s26ZNPWLaA5guxur5FgP8TiYQ4XO3D+r4WVCEnjuS+u2s1CZaYdD4XmTa3FymaC0xa9Ov4Cz7fhAtgu+UfuRj3gpkFdwd0KbO+YYtDDUTqJ2RlgtYExM9543yvNMK6ZDpzTCawD4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777696857; c=relaxed/simple; bh=rrbbHi7z3OblsS/Aw3E7dceutkv9NmpuuZyRvuo3HmU=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=RSaVwOfw0V/nmdbEKnLvV37td0lJ/ta73NM3BF1UdAK9PqO/+bJ19aCVDiueGHG1NrMk75I5PqMkezQQTXyAUhrhalkPLOT6cCXUMkAy1i5MxqUvtOEHuTrp1B0dTMDkjkoZWpdAQCVKThnUBTUC+iE/k8Kqv29M3U7ybrBjeq0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=1wt.eu; spf=pass smtp.mailfrom=1wt.eu; dkim=pass (1024-bit key) header.d=1wt.eu header.i=@1wt.eu header.b=eesoXfBR; arc=none smtp.client-ip=51.159.59.229 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=1wt.eu Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=1wt.eu Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=1wt.eu header.i=@1wt.eu header.b="eesoXfBR" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1wt.eu; s=mail; t=1777696852; bh=GsaNAAy0cmxPyyLSQ4fIKrp8PlUB05IFaq0D2zQ0uzw=; h=From:Message-ID:From; b=eesoXfBRayLt79NVe8724vwEqo4M9KTmXiPRu+dWf30iEPeQ3UmNWcoDOzKfTa5Zv eYszSj7dfXd0GAPu9OKQ4wATld0524VOyi7eG+Obgi5oPzK4qnyAgWsHMFfAsGrj/j Aa+/iTQPhVzA75PXOVFZ5TZZ4Rb6lHcB/diuKW2M= Received: from 1wt.eu (ded1.1wt.eu [163.172.96.212]) by mta1.formilux.org (Postfix) with ESMTP id 8CBEDC0AB2; Sat, 02 May 2026 06:40:52 +0200 (CEST) Date: Sat, 2 May 2026 06:40:52 +0200 From: Willy Tarreau To: Daniel Palmer Cc: linux@weissschuh.net, linux-kernel@vger.kernel.org Subject: Re: [PATCH v3 2/2] selftests/nolibc: Add a very basic test for fallocate() Message-ID: References: <20260430164125.1106350-1-daniel@thingy.jp> <20260430164125.1106350-3-daniel@thingy.jp> 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-Disposition: inline In-Reply-To: On Sat, May 02, 2026 at 01:00:27PM +0900, Daniel Palmer wrote: > Hi Willy, > > On Sat, 2 May 2026 at 12:04, Willy Tarreau wrote: > > Note that I've already seen one place with more than 4PB on a shared > > FS, so I don't know how long such a test could hold true without > > causing a havoc. I understand the reason behind the +32 though, and > > I'm not worried for the short-to-mid term. > > I think there is the assumption that the file is on tmpfs and since > tmpfs is in memory it can't be bigger that your system memory. > I think with current memory prices we might be ok for now? :) Agreed :-) Willy