From nobody Thu Dec 18 07:12:11 2025 Received: from mail-wm1-f74.google.com (mail-wm1-f74.google.com [209.85.128.74]) (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 42B141F180F for ; Thu, 13 Mar 2025 18:11:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.74 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741889517; cv=none; b=qvGK45pVXRz4Kilcb5Tm/FiHtDrMOm6h4PfiF83LxCV13+wwm2OO4IzacQh2kCfwx+7sgS0zVKR2XE3Y6En0mU8otY0rJLDVzRrVJ7CTe3IhjXc5MRJqkniRakYZFNyvoj18cDjfstQkyWxgBlcmbrQM260+WDMLEnoQ+uuqa7k= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741889517; c=relaxed/simple; bh=S1m2mc+yGnN4a5PigzsimvcF9PVJTalTzczZMp/6AK8=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=hgUl44l+EoToLRQODlAVpvjkZviVbgkAvOi9aBmfun13ARByRvHaDIsUCQJtPiJi7tYD6xDFn0MGYDWHbdn+/1x/TVeBlWqRGH6lhcqqQ+fL3fUhOr5Qi9cwxu3fWB0FHwXVd0fhAp6NzeMbCASh2GwFCEnoArJ0za5MQvMTEQ8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--jackmanb.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=xZmFUlHD; arc=none smtp.client-ip=209.85.128.74 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=flex--jackmanb.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="xZmFUlHD" Received: by mail-wm1-f74.google.com with SMTP id 5b1f17b1804b1-43ced8c2eb7so9317505e9.1 for ; Thu, 13 Mar 2025 11:11:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1741889514; x=1742494314; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=+pdfFaB/k81zEw2QO02syAUWJ0A/YbE7SLXQbmysWgY=; b=xZmFUlHDDz7rC/so6v03PHagsW0e4S800gW8qdIH8JMEmWoQKYGtKSjLv51mSX3hKM CwZlD6sAT8oVYpNSpgN4S3UXwx+kNUB5cE8t033WiOZ8jqa4uoiLyCRSlnl8lnTUpa4/ 0QTVJw8Tx2K/ptckBDgEMUZX6yZwHSYhPK3fyUfwR77JMvGTeIPEysEoL3QoBudqjZKl qtGJ15eiXKhJ4kBkEq/XtVGoSCi7D+7D6Fj51TjTQi6tbRNvq1dkct4i3Td6Ora1HY7Q VL+4EGeTMagOzEDTwRJ3auI3Cz6NAWtVPhOOLxlz2v2izN8m9bjINM/A1WIis54Givj4 ARmA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1741889514; x=1742494314; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=+pdfFaB/k81zEw2QO02syAUWJ0A/YbE7SLXQbmysWgY=; b=hEplSOqpLJUdq+dvPZZdOY8R+Yg3Bpq0HcCNSgwjyYeBf1YaNvrrJ74froMwXNQpyE /x8pqi+S84fzIKn13CU23Daang1Ak8TNzXByLzd7UA3BtTfMZtvmwbd8oMsq4KIb8r0G RRIMt1z8hJX3rCyda/5UszKGWJqWu56Olg+vcdIT0uYPjuEt1ykzCDDEronHM2cCrQuy Un0u560VW9uoHnrJrFjOsRXFD42pXAETBcERS3OAzgnhgcgKKXsPYZrzmtxVUGy25xxD 2BDC912w4HZ4lruyR9GJpr3zMdTlUB4GfdISYYWm/uWCyPwlhg/FTe9ijhk8LxIUYRWh knqg== X-Gm-Message-State: AOJu0Yx/u/PhvwgOXB/yVRQR6eLJTrGqGqv1XTNymFo5demi+nuJCA7J HmWp2wAVyd846wSPMKdJ0J8aj3D3kFQ587YF12qWXAL9elKGi0B2gofoOojmhe/9EBQ4SuJmnrf qQf2hfExbRA== X-Google-Smtp-Source: AGHT+IHRjd714WqfAw15oFXCnMwvJ6lJg1SUh1wqrNovE6dSYYDgAsuTLSBaeJXNp59r6szjiAIaZ5iRK8TFZQ== X-Received: from wmbez8.prod.google.com ([2002:a05:600c:83c8:b0:43c:fc61:959c]) (user=jackmanb job=prod-delivery.src-stubby-dispatcher) by 2002:a05:600c:4e8f:b0:43c:fb95:c76f with SMTP id 5b1f17b1804b1-43d1d897497mr5845225e9.9.1741889514676; Thu, 13 Mar 2025 11:11:54 -0700 (PDT) Date: Thu, 13 Mar 2025 18:11:26 +0000 In-Reply-To: <20250313-asi-page-alloc-v1-0-04972e046cea@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250313-asi-page-alloc-v1-0-04972e046cea@google.com> X-Mailer: b4 0.14.2 Message-ID: <20250313-asi-page-alloc-v1-7-04972e046cea@google.com> Subject: [PATCH RFC HACKS 07/11] mm/slub: Set __GFP_SENSITIVE for reclaimable slabs From: Brendan Jackman To: Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, Andrew Morton , David Rientjes , Vlastimil Babka , David Hildenbrand Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, Mike Rapoport , Junaid Shahid , Reiji Watanabe , Patrick Bellasi , Brendan Jackman , Yosry Ahmed Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable It's not currently possible allocate reclaimable, nonsensitive pages. For the moment, just add __GFP_SENSITIVE. This will need to be fixed before this can be a [PATCH]. Signed-off-by: Brendan Jackman --- mm/slub.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/mm/slub.c b/mm/slub.c index 1f50129dcfb3cd1fc76ac9398fa7718cedb42385..132e894e96df20f2e2d69d0b602= b4719cdc072f5 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -5559,7 +5559,11 @@ static int calculate_sizes(struct kmem_cache_args *a= rgs, struct kmem_cache *s) s->allocflags |=3D GFP_DMA32; =20 if (s->flags & SLAB_RECLAIM_ACCOUNT) - s->allocflags |=3D __GFP_RECLAIMABLE; + /* + * TODO: Cannot currently allocate reclaimable, nonsensitive + * pages. For the moment, just add __GFP_SENSITIVE. + */ + s->allocflags |=3D __GFP_RECLAIMABLE | __GFP_SENSITIVE; =20 /* * Determine the number of objects per slab --=20 2.49.0.rc1.451.g8f38331e32-goog