From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-dy1-f200.google.com (mail-dy1-f200.google.com [74.125.82.200]) (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 6E3E64D1780 for ; Tue, 29 Sep 2026 21:53:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.82.200 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790718796; cv=none; b=gcFv9E5Jno/blo6NNV2q34eBNZMJ2xUdNOxZW62QgHq1lmGakQbcyXDwL65zc4MjsmtJ30iXY4nsgE2TBZoWEDVFyHjau214JfJgH4yXz6D+i4ql3lLceWoquv7eHU40f6piuVUYPgggz0meKdMCZFC8liQEaJoMWy9gN+vCXlw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790718796; c=relaxed/simple; bh=yYlUHXeU1rSx4t+U8qxu7dtA8Nvhruq9KGdMjctBjd8=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=Tygb/KIkaiy7tXZviU+CPy79+vaJoMh8Qgpnday5A3mShy/MygPBEEkyTIhdYYmdRLG1HmxojC8boyEP+RfnyK7Wzc8eL9n/mS7DqZz2ytJdA1hH61ym3q4VJYNFLoebrtSVcRdJmETQ6U+FlvLLaX9LlSWy3bbQk3UPKUJvWiY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--nilayvaish.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=GC3N2AyJ; arc=none smtp.client-ip=74.125.82.200 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--nilayvaish.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="GC3N2AyJ" Received: by mail-dy1-f200.google.com with SMTP id 5a478bee46e88-341eff9e381so4825042eec.1 for ; Tue, 29 Sep 2026 14:53:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1790718793; x=1791323593; darn=vger.kernel.org; h=content-type:cc:to:from:subject:message-id:references:mime-version :in-reply-to:date:from:to:cc:subject:date:message-id:reply-to :content-type; bh=O8S1L9thUbDBOo5IvvqirVWz8KUgkebaENmH325jJXM=; b=GC3N2AyJhLoRlUlZWtehrQq4SPuw40DKVi3UaxwM2kbxY6HiKJTxyXLPRqtMSKbyKb yKOwLwUcmoIL4bGFiWSv+v3a3c12s8RZaLHEWyzvM9+Txyxe1ash2dbRobDRKXA6+kRW oK59J16WiCj6RoABPxBaH9ubYycBL0tKYriKahVa31TcqVCUYaNi62FuedtGH+nPIt09 8839G04bb2OAmgdopTt3gcR4mq9pjitkEYTrwz4lDFpIvUxajoBr5TFdRGOoM2evTltu QK8UULteq5Gugm4Udx3kA9+kN9XzOr/eOiIX1RkZMy4xNnT/aXypLuf7YgxEmHr4yN8a lfPw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1790718793; x=1791323593; h=content-type: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:content-type; bh=O8S1L9thUbDBOo5IvvqirVWz8KUgkebaENmH325jJXM=; b=sKpCfjH4hDiZnLLuksRkEmOoPqM9A5LhQkXY1lD/gn5414f57qDJgqzeodcCjbcP7Z 2fECOv4B9iforRLrQr0wvrxYgLHhNPsqdSMassU9u4QuHZmWN5Oa5b/K1Wulu4qyPHc5 +cWboRCPFK2Wn25z5682xaqWe2zQWw/uvbCDnGmPRCfFJ6Kbn70g9WmYizjk8DVXHpGo oKYEJrrsrxhm/RgKJJuZyyYv/Yeqxl5/CS+87JikQ+ymc7LbggnQ7arrESPVW8QTRyWF jr8S/BQr6W9OO+4B4xBXLC8FB2+FhvHUtCvVELE8OTu9TNj68FrT6ZEXHtA0p3MIQURK 5DFw== X-Forwarded-Encrypted: i=1; AKwUvByl+PfiP6OyZYq6GMAzc4bvmcfKXoENcH4FVeqcXUeeoT9GT9FVdwCqkT/V1sjmINsDOptP9OHfDvKt1Gc=@vger.kernel.org X-Gm-Message-State: AFuF++lGmOdeRj0LQwOHPRoYmq0rTSmkt69EFTVj2oFiZBWqOCyUsDur UmgkP50lLL9lqbICBZNTMXwK66VLbP87OO36dKn54mkPGSwMFmnAsbPBctXpLxTY2RkhTa5jTLQ IcbNDbc90Omg/3V8d/FT+xw== X-Received: from dlx9.prod.google.com ([2002:a05:7022:89:b0:144:d025:68b5]) (user=nilayvaish job=prod-delivery.src-stubby-dispatcher) by 2002:a05:701b:2706:b0:146:6755:ff08 with SMTP id a92af1059eb24-14c9d60e402mr605303c88.9.1790718792863; Tue, 29 Sep 2026 14:53:12 -0700 (PDT) Date: Tue, 29 Sep 2026 14:51:52 -0700 In-Reply-To: <20260929215206.516490-1-nilayvaish@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260929215206.516490-1-nilayvaish@google.com> X-Mailer: git-send-email 2.56.0.rc1.315.gc6ed9934b7-goog Message-ID: <20260929215206.516490-2-nilayvaish@google.com> Subject: [PATCH 01/15] mm/khugepaged: drop redundant page parameter from set_huge_pmd() From: Nilay Vaish To: Andrew Morton Cc: Matthew Wilcox , David Hildenbrand , Greg Thelen , Roman Gushchin , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Nilay Vaish Content-Type: text/plain; charset="UTF-8" As part of the memdescs effort, struct folio will be allocated separately from struct page and will no longer overlay the head page. set_huge_pmd() is a static helper with a single caller that passes both 'folio' and '&folio->page'. Drop the redundant struct page parameter and pass folio_page(folio, 0) to do_set_pmd() so khugepaged no longer references folio->page directly. No functional change intended. Assisted-by: LLM Signed-off-by: Nilay Vaish --- mm/khugepaged.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/mm/khugepaged.c b/mm/khugepaged.c index 913086eaf17b..63acb13f24eb 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -1793,7 +1793,7 @@ static void collect_mm_slot(struct mm_slot *slot) /* folio must be locked, and mmap_lock must be held */ static enum scan_result set_huge_pmd(struct vm_area_struct *vma, unsigned long addr, - pmd_t *pmdp, struct folio *folio, struct page *page) + pmd_t *pmdp, struct folio *folio) { struct mm_struct *mm = vma->vm_mm; struct vm_fault vmf = { @@ -1821,7 +1821,7 @@ static enum scan_result set_huge_pmd(struct vm_area_struct *vma, unsigned long a } vmf.pmd = pmdp; - if (do_set_pmd(&vmf, folio, page)) + if (do_set_pmd(&vmf, folio, folio_page(folio, 0))) return SCAN_FAIL; folio_get(folio); @@ -2032,7 +2032,7 @@ static enum scan_result try_collapse_pte_mapped_thp(struct mm_struct *mm, unsign maybe_install_pmd: /* step 5: install pmd entry */ result = install_pmd - ? set_huge_pmd(vma, haddr, pmd, folio, &folio->page) + ? set_huge_pmd(vma, haddr, pmd, folio) : SCAN_SUCCEED; goto drop_folio; abort: -- 2.56.0.rc1.315.gc6ed9934b7-goog