From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-177.mta0.migadu.com (out-177.mta0.migadu.com [91.218.175.177]) (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 348202F6170 for ; Tue, 3 Feb 2026 03:36:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.177 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770089780; cv=none; b=NDTWuyhuPF9xdjvuELy6ctYxGGkAp8wl6zw+mPizFuB7VypcpfZMIOigp9rRLzZmySd6rbDHOtfXqPUejArBQ8CcgnVyfmnSwRxWwIwPCCqP+Vwp/n+8ddwu4nHcg1Bvc7OnCERB+1j3bJLUh4CYHIXrAWzPa34ozz+EvUfYrH4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770089780; c=relaxed/simple; bh=hYz6UnZl98fvkQAs9RG2iuggv8a2xR1Tt8nipqzQHTs=; h=Content-Type:Mime-Version:Subject:From:In-Reply-To:Date:Cc: Message-Id:References:To; b=Gscqgv+oqhVTqtOKrgEzJFpW/UPSK6hwldmX+02v0YorwwxAVRBtrpU8QIe3N7ASnBFLwaCpxbysRgVfFsq6uLbP0CTspW62Ks0Li5VbvAA37vE5x2tZfrDsKq3bO8ID8e/wJrj62fxN8+USI4sYa9TRlIiuMQLsfs+JBct6P1w= 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=DhVo4INP; arc=none smtp.client-ip=91.218.175.177 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="DhVo4INP" Content-Type: text/plain; charset=us-ascii DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1770089766; 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: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=KJxP6n3p44LkH03IkDqQsgS+GpBo2zU5MsWmp0JlB5A=; b=DhVo4INPC4Ons8xaBCpPzhhwL+sntJgmv9IgIoulLAZYf4pzz3ZpnHm6k400LdHZDLpymV RE4bhGg4+b+2pq+2qsmy0OYtR5wulCSX8hs4mU+edMcJEJJyb/vV+yKryUukukDMjvejJ5 5aEU0wJ5Ls+w6TvtZLrP2w07z99oZXw= Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3864.300.41.1.7\)) Subject: Re: [PATCHv6 09/17] mm/sparse: Check memmap alignment for compound_info_has_mask() X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Muchun Song In-Reply-To: <20260202155634.650837-10-kas@kernel.org> Date: Tue, 3 Feb 2026 11:35:24 +0800 Cc: Andrew Morton , David Hildenbrand , Matthew Wilcox , Usama Arif , Frank van der Linden , Oscar Salvador , Mike Rapoport , Vlastimil Babka , Lorenzo Stoakes , Zi Yan , Baoquan He , Michal Hocko , Johannes Weiner , Jonathan Corbet , Huacai Chen , WANG Xuerui , Palmer Dabbelt , Paul Walmsley , Albert Ou , Alexandre Ghiti , kernel-team@meta.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, loongarch@lists.linux.dev, linux-riscv@lists.infradead.org Content-Transfer-Encoding: 7bit Message-Id: References: <20260202155634.650837-1-kas@kernel.org> <20260202155634.650837-10-kas@kernel.org> To: Kiryl Shutsemau X-Migadu-Flow: FLOW_OUT > On Feb 2, 2026, at 23:56, Kiryl Shutsemau wrote: > > If page->compound_info encodes a mask, it is expected that vmemmap to be > naturally aligned to the maximum folio size. > > Add a VM_BUG_ON() to check the alignment. > > Signed-off-by: Kiryl Shutsemau > Acked-by: Zi Yan Reviewed-by: Muchun Song