From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1792583274; b=T591tsYKSjDls3ZXUiDrnQo5D1vM+0JP3b4GknH70OXlP49L/y36/RZaFvGKLFhShj+X BFsbk/jVzI+swPrV7JKnkcc70VesX2uHXIa+XR2NUMAlzF+uzdpkgXM+mMygIuXgrSUa1 REFC4z0IcHhHmywNdrQJt8D/1T/i1Bu4TNip39rkrxpMZjrk8j+hI+R8qxBxWhEa3ekJx a8WJG5Fitj/qtuvmlHCc0H4ONmMnkhPfMNtNqdLRdVYZs8IVGCHengEDXdQEEvdyxWyTk FL6HCUF6IOXxKCj6vPbl3Q/UOv1Onfpa7L2GnF1U1qmby6sh8NNDAk+IUr5Hveaeayw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792583274; h=Received:DKIM-Signature:From:Date:Subject:MIME-Version:Content-Type: Content-Transfer-Encoding:Message-Id:References:In-Reply-To:To:Cc: X-Mailer; bh=FdNzDMyikUDkRQM2Yx/R+UlgduqMmo5RYSj82aLvC8w=; b=n/7a4CaiN4ElAs4+eLkOCrd+/1Ysg7xQ7wl0yl01DgeLfYFTaecbsclI2G7fqaJgxItU r6Q3zKRSKsTLwVYOHsmmKXIISbpSicr9jIXEKSCNtlcVMnGyFubmzEyoLdqqFITQ+RYH3 mXrl4vzJg08PmKYJiz8Vv2zPPlMB1xO9a3YUiq1ZruYItL2FjcO7eRnq2j9tjsIVQzRq5 Fqv3iB5jSJ3fMh7lX6G+rzP+VVH1/1taR7rW9md36VED98JlOtSiICFEXGWFgcohMliIN eRzmYcyJyM86prLgDiRHA94SbvWEVxevN5NIBQsNncxqz6yWa6OyCDU3UTJXowp7nlg== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=fSTsVZbL; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 88B77606A320 for ; Wed, 21 Oct 2026 11:47:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=fSTsVZbL Received: by smtp.kernel.org (Postfix) with ESMTPSA id 02EFB1F000CA; Wed, 21 Oct 2026 11:47:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1792583274; bh=FdNzDMyikUDkRQM2Yx/R+UlgduqMmo5RYSj82aLvC8w=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=fSTsVZbLq+oG9k7aYHjUwtPMV2IMdRjBz/QrEGiTP+glW02RmmZw163JDRDdGuzXG ywJ1FSKJMY2U+wwwHaYftuUZPJFEuS+rwSxA3qjefkUKmt85gQX5cG+G6pO9lNJ98H ZD611ggfnEzxeVeI/KZr/eowxy1lXMgJEP6Ktem733QZ7eKIwIQcESDMaVeROgqNxu axrwIZcRoZLJpLln5ZhrCy5MDuufEYKyqgX7r/bcohNhL8/zAnDke1oQkn9JeFAir0 jZ5NkJECpu/2s80E+IxbA1NYUZ+Tu8/sRif3MMhZ26ifDHLj4eFQHoiAH/GG6CSL8x MMe8xKQYEaOhA== From: "Harry Yoo (Meta)" Date: Wed, 21 Oct 2026 12:46:49 +0100 Subject: [PATCH slab/for-next 08/14] powerpc/mm: specify SLAB_MAY_ACCOUNT for pgtable caches X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20261021-memalloc-prof-dont-waste-slabobj-ext-metadata-v1-8-096800aa3330@kernel.org> References: <20261021-memalloc-prof-dont-waste-slabobj-ext-metadata-v1-0-096800aa3330@kernel.org> In-Reply-To: <20261021-memalloc-prof-dont-waste-slabobj-ext-metadata-v1-0-096800aa3330@kernel.org> To: Vlastimil Babka , Andrew Morton , Suren Baghdasaryan , Johannes Weiner , Michal Hocko , Shakeel Butt , Roman Gushchin Cc: Hao Li , Christoph Lameter , David Rientjes , Muchun Song , Hao Ge , Pedro Falcato , linux-mm@kvack.org, linux-kernel@vger.kernel.org, kernel-team@meta.com, "Harry Yoo (Meta)" , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , "Christophe Leroy (CS GROUP)" , linuxppc-dev@lists.ozlabs.org X-Mailer: b4 0.16.0 User page tables are allocated from PGT_CACHE() with pgtable_gfp_flags(), which adds __GFP_ACCOUNT for non-kernel mms. Specify SLAB_MAY_ACCOUNT when the object may be charged to a memcg. __GFP_ACCOUNT without SLAB_MAY_ACCOUNT will not be allowed. Path: copy_process() -> mm_init() -> pgd_alloc() -> kmem_cache_alloc(PGT_CACHE(PGD_INDEX_SIZE), pgtable_gfp_flags(mm, GFP_KERNEL)) Assisted-by: LLM Cc: Madhavan Srinivasan Cc: Michael Ellerman Cc: Nicholas Piggin Cc: "Christophe Leroy (CS GROUP)" Cc: linuxppc-dev@lists.ozlabs.org Signed-off-by: Harry Yoo (Meta) --- arch/powerpc/mm/init-common.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/mm/init-common.c b/arch/powerpc/mm/init-common.c index 745097554bea..72dfcc559630 100644 --- a/arch/powerpc/mm/init-common.c +++ b/arch/powerpc/mm/init-common.c @@ -140,7 +140,8 @@ void pgtable_cache_add(unsigned int shift) align = max_t(unsigned long, align, minalign); name = kasprintf(GFP_KERNEL, "pgtable-2^%d", shift); if (name) - new = kmem_cache_create(name, table_size, align, 0, ctor(shift)); + new = kmem_cache_create(name, table_size, align, + SLAB_MAY_ACCOUNT, ctor(shift)); if (!new) panic("Could not allocate pgtable cache for order %d", shift); -- 2.54.0