From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 32B6C399011; Fri, 19 Jun 2026 14:52:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781880745; cv=none; b=KJbYL9aEcxCjqGYkrmPCOCIMFAuNcfhgeC7SKeDCVmKUuwr+DPDfCwzV/4g6t8IZ7EDQa8qGTG3SvdGOiLioHgemEpFWlUqcE4E0gWs6aZZvwY14fuZCRUuLs+kNhRJ0KZWw1yGUMoRMYlMfUmmYnOuEZrQCBwTqdf1Yy0TbjaQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781880745; c=relaxed/simple; bh=1NxF9OEqzZjV9HpuOoEMDHMtFk29U8UuSY2cSTFY0hU=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=bri0CN9Va4Acb4RO+ZARLb5oEQjE+Ijo6iMEhttsLUsi3KxJ8rvinH4RGlYdJzGZlECZ0vj2KQq1ACWIzOthNXSAwBq8XJgPlptARNu9AQTQdo4NJEwP+F5DOvISqYbucsO+vKGMKYKvkVSId/TAJGdh/1t6lM2HhLlprlsI6y8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=mQv4j3Vb; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="mQv4j3Vb" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9B2E61F000E9; Fri, 19 Jun 2026 14:52:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1781880744; bh=MMrfiUsFirA1Wml6QpEyIkRNWkxL+MwzDwXxle/2vjY=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=mQv4j3VbDWg8O5taJ9piUSfRU3AjvQi66hID3ksm16xst6HHiz9IzYOBf5fZ8yj/i px+Tj1KSP09VAvZe6u1uozEvCw0ov85LXVNQvLcJ4X+V6M7WnaDyck3iAzq8dVql8D gw6+gfB4QzFixuXHlUdJQaz47pQ98pXI/Hp/WTJNY6ZmsS+H9/Q/ujgmEI09i36r5M PwMCR4zVuD1ws+erSTfQ5nrM/ziXF5Kc6/9xR8UDmYAesiKIRst9hkOn+vvC5WHgfq jcUN5tenI8D+3Z3Z0I85Y/yQc9qJbyHmHUVhCiyd5QpsKFSG+sfAqwwK0XEx8UMNy0 +gEgu4+0Nz3wQ== Message-ID: <92c3a198-98ad-47c3-a5aa-24db52109b06@kernel.org> Date: Fri, 19 Jun 2026 16:52:18 +0200 Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 02/11] mm: factor out adjust_range_hwpoison() from hugetlbfs To: Jane Chu , akpm@linux-foundation.org Cc: willy@infradead.org, jack@suse.cz, viro@zeniv.linux.org.uk, brauner@kernel.org, muchun.song@linux.dev, osalvador@suse.de, hughd@google.com, baolin.wang@linux.alibaba.com, linmiaohe@huawei.com, nao.horiguchi@gmail.com, lorenzo@kernel.org, rppt@kernel.org, peterx@redhat.com, corbet@lwn.net, linux-doc@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org References: <20260617172534.1740152-1-jane.chu@oracle.com> <20260617172534.1740152-3-jane.chu@oracle.com> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 6/17/26 19:25, Jane Chu wrote: > The functionality and implementation of adjust_range_hwpoison() is > generic, so factor it out and make it ready for generic use. > > [1] https://lore.kernel.org/linux-mm/aeZwAz6PcdlqSnJ2@casper.infradead.org/ > > Suggested-by: Matthew Wilcox > Signed-off-by: Jane Chu > --- [...] > -/* > - * Check if a given raw @page is HWPOISON in a folio of any kind > - */ > -bool is_raw_hwpoison_page_in_folio(struct page *page); > - > static inline unsigned long huge_page_mask_align(struct file *file) > { > return PAGE_MASK & ~huge_page_mask(hstate_file(file)); > diff --git a/mm/filemap.c b/mm/filemap.c > index 4e636647100c..a27ce4ad6247 100644 > --- a/mm/filemap.c > +++ b/mm/filemap.c > @@ -2753,6 +2753,37 @@ static void filemap_end_dropbehind_read(struct folio *folio) > } > } > > +/** > + * adjust_range_hwpoison - adjust clean readable range to avoid hwpoison. > + * @folio: folio that contains hwpoison(s). > + * @offset: bytes into the folio where subsequent read starts. > + * @bytes: number of bytes wish to read. > + * > + * Return: adjusted total number of bytes starting off @offset that can be s/off/at/ ? Apart from that, lgtm -- Cheers, David