From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 51A311D69E for ; Fri, 16 Aug 2024 08:22:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.137.202.133 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723796561; cv=none; b=O63LsroN7LWhiLDtJCBsWby/Qq+3kGgd8U4doqpp8lKWIzV6oSpRD+/jITBjrGLX0lWhO+clRXbe9ZOallwHKFh6eccqONYLQX3oiodDZ/dHp4CdLgiPfhGLf03RbzWQNBznimcW5R3a8qseUHUBfMh1brLSDUKGZ5puV10R7kU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723796561; c=relaxed/simple; bh=TzG0cJHkMmTQupV18hGHoHBePBtm5asgEqrR+hmMnXg=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=KHpreLbRTH6kozpe+VivxustFiSM98802dR7a4zZBJztyLBmrvgosBEVDu9VH6yhm6Oplnjta948KnWlhZi9ThxWCbPtM1QtahLbJs0sdQzuv8ayrBKNRDngMxD3jSuYVfZ7+W/PbCCXW2FvyG3KJkAz8VwHFaMPON6k0njHtbg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=oEB+QiZs; arc=none smtp.client-ip=198.137.202.133 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="oEB+QiZs" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=1S/vCZY/lYJ8pslrqPz+xqOl/J9nwoWDT9AWGDSsP44=; b=oEB+QiZsFKmyhkvNImi3V0Fich vpUD7VopM8jsaiicBA3QwHHWKVgbh8raIWUQIJ7LpZAB2NasctXiFIC7bpxWM0gZzJMY/hOJ15DaU uh9nvHkuSUXEeqHJipVA2gp4vDFVjnfsLMNueKsFozd3ZqewPrMZ04ESXyj5nAbG+hXFXujS0WIms 2d/xhszx7S9aQzBSKZziSnycSJYipFf0yBZ55bPu+8wz6DSWsz123YKAnGrdCS+XB5aPnAwdElMh8 +s8gY8wsmc8cQGfh8ZUwPPaKIicqaccXjb9edn/hIBKQH39TZJ2KbGYylFSh+4im8ail79+RjLixS sHGiF15w==; Received: from hch by bombadil.infradead.org with local (Exim 4.97.1 #2 (Red Hat Linux)) id 1sesEH-0000000CFuR-1J3U; Fri, 16 Aug 2024 08:22:37 +0000 Date: Fri, 16 Aug 2024 01:22:37 -0700 From: Christoph Hellwig To: Michal Hocko Cc: Yafang Shao , Andrew Morton , Christoph Hellwig , viro@zeniv.linux.org.uk, brauner@kernel.org, jack@suse.cz, david@fromorbit.com, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, Kent Overstreet Subject: Re: [PATCH] mm: document risk of PF_MEMALLOC_NORECLAIM Message-ID: References: Precedence: bulk X-Mailing-List: linux-fsdevel@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: X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html On Fri, Aug 16, 2024 at 10:17:54AM +0200, Michal Hocko wrote: > Andrew, could you merge the following before PF_MEMALLOC_NORECLAIM can > be removed from the tree altogether please? For the full context the > email thread starts here: https://lore.kernel.org/all/20240812090525.80299-1-laoar.shao@gmail.com/T/#u I don't think that's enough. We just need to kill it given that it was added without ACKs and despite explicit earlier objections to the API. That might leave bcachefs with broken inode allocation handling, but so what - it's marked experimental and there should be other ways to sort this out.