From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-182.mta0.migadu.com (out-182.mta0.migadu.com [91.218.175.182]) (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 47768296BD6 for ; Wed, 8 Oct 2025 02:07:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.182 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759889267; cv=none; b=fltXZCJegRMds/f1FT6xx4XNxg768tBxdeDnvhHvBkI6D5RJj9GWO5JLe0SyLjOSKktYtqDgCjaY4Kn428hlFTtRslDfSukpGn4Strzxph15fT5eNR9C3X69tb6B/AnNOfnLRuELoTuuTfgM8aZkKA9i8RYeqPulrAPGOtj4Zmg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759889267; c=relaxed/simple; bh=jYd48FCslT8evndw80GHjjsg/fp3Yn4kfLmlemTdycY=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=seqsIZBOb76Or4kKKK5opjh0z07615HcEuf+tuIQiPomiBELhQIhhTpxP6m2tWoJUWE3nUVliDUIZba5Peuo+tAVGgMW7+vWJipPk0wUrjqb2fKA+2rLmzic/c//v4G3grlGMn3SzuPsD2qQ9eCgh67n1kL7372YqDFmGkV/iXU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=iK+v+Ryg; arc=none smtp.client-ip=91.218.175.182 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="iK+v+Ryg" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1759889261; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=HcPmPhUz1c0vqDGf/BJJjPlQYYOjd9QFCOfmGvu2dws=; b=iK+v+RygeTMZeXcVkOCn1vhtTEahSVmwSjRGVt0bfdG7/2y20M9tDnQb7Yt9aiZcZAhODk Amo7BEuRGY8OSiRi/6WdXsWEpjwtocI/nnkYPeYMy8OKc+IWRNdoyvV3cSftItvQgeCG9Z feLWm8udWPWo1H90xp22KmHSU0kc1fM= From: Roman Gushchin To: Andrew Morton Cc: linux-kernel@vger.kernel.org, "Matthew Wilcox (Oracle)" , Jan Kara , Dev Jain , linux-mm@kvack.org Subject: Re: [PATCH v3] mm: readahead: make thp readahead conditional to mmap_miss logic In-Reply-To: <20251007175343.107b17191734cddd7bbdeb54@linux-foundation.org> (Andrew Morton's message of "Tue, 7 Oct 2025 17:53:43 -0700") References: <20251006175106.377411-1-roman.gushchin@linux.dev> <20251007153424.1b46a4018e17d5dafd7fb126@linux-foundation.org> <87play1fzy.fsf@linux.dev> <20251007175343.107b17191734cddd7bbdeb54@linux-foundation.org> Date: Tue, 07 Oct 2025 19:07:36 -0700 Message-ID: <875xcqi1sn.fsf@linux.dev> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain X-Migadu-Flow: FLOW_OUT Andrew Morton writes: > On Tue, 07 Oct 2025 15:52:49 -0700 Roman Gushchin wrote: > >> >> Signed-off-by: Roman Gushchin >> >> Cc: Matthew Wilcox (Oracle) >> >> Cc: Jan Kara >> >> Cc: Dev Jain >> > >> > But I'll slap the Fixes: in there, it might help someone. >> >> I'd do exactly what you suggested: Fixes + no stable backport. >> >> But I guess it still might end up in the LTS tree thanks to >> the automation picking up all fixes. Should be ok too. > > They've been asked not to override the MM developers' decisions (ie, mm > is special). > > I'm not sure how reliable this is... And I'm not sure how they > identify the dont-do-that patches. Maybe mm/*, maybe mm.git, maybe > s-o-b:akpm. But I haven't seen any transgressions in a year or three. Nice! I didn't know this.