From nobody Mon Feb 9 08:54:53 2026 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (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 B564A2957A8 for ; Mon, 28 Apr 2025 18:13:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745864003; cv=none; b=b3L6dDRd/NKR03M5tEaVZSw7/Wm9LnMZ/ngTr3zoqWUxOhFwrJgfrZbvSKRoepYnTZPMZuCX7FM6BAd+wwWwUhgAGApoHOWELxe1GYc5zL0Fg91UCuAz/rPvyPog05IacLhwrNpHgbQAExiBoWG5e/GYsmDZNTs4lJmSvFNLZzA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745864003; c=relaxed/simple; bh=5z+IYGVEcdYg78Uowl2EpuhK5eJp37p2sUw0GqC0quo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=aM+SC9ZrGK49Nw2fe9Hq5yfAcmyKrGqYd2G2FBMea/S/uLm1lKM2Q6xS+tB/8EtWh+yMRx8w+p4CQSnKhkrQ4KF3J59ckAjHP3YbKEdMBDNP5u5ZIC45BdNB+luVQXxqxcbpk+xa7H0QeZiq7ZvaIvCqHHJMvI3Jlanfq5ygMVY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=XXtmLw9Z; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="XXtmLw9Z" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1745864000; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ePmLXrUr/o3h7jPNSUCdUrcTkYoB25I2nXP+9bwQ7to=; b=XXtmLw9Z8lV2yXEr6ZO15Wh6FVxrCJqL0gG5l7lathjobQin3SQWOZ6FYyPYxzwridWE8x zDrUYCwEAT1CeX5Tba15kWIUrHxJF4EjwQugimMaIdBVORyKi0xw7ZadcYtLiBwXKgy2hL CHmxEE7XzEDkmdVjsZDBG8pTuaDFc6M= Received: from mx-prod-mc-02.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-86-4VUygtS7OQeFszrIXDtQew-1; Mon, 28 Apr 2025 14:13:18 -0400 X-MC-Unique: 4VUygtS7OQeFszrIXDtQew-1 X-Mimecast-MFC-AGG-ID: 4VUygtS7OQeFszrIXDtQew_1745863992 Received: from mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.111]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id B71081956089; Mon, 28 Apr 2025 18:13:11 +0000 (UTC) Received: from h1.redhat.com (unknown [10.22.65.12]) by mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id AA927180094B; Mon, 28 Apr 2025 18:13:03 +0000 (UTC) From: Nico Pache To: linux-mm@kvack.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org Cc: akpm@linux-foundation.org, corbet@lwn.net, rostedt@goodmis.org, mhiramat@kernel.org, mathieu.desnoyers@efficios.com, david@redhat.com, baohua@kernel.org, baolin.wang@linux.alibaba.com, ryan.roberts@arm.com, willy@infradead.org, peterx@redhat.com, ziy@nvidia.com, wangkefeng.wang@huawei.com, usamaarif642@gmail.com, sunnanyong@huawei.com, vishal.moola@gmail.com, thomas.hellstrom@linux.intel.com, yang@os.amperecomputing.com, kirill.shutemov@linux.intel.com, aarcange@redhat.com, raquini@redhat.com, dev.jain@arm.com, anshuman.khandual@arm.com, catalin.marinas@arm.com, tiwai@suse.de, will@kernel.org, dave.hansen@linux.intel.com, jack@suse.cz, cl@gentwo.org, jglisse@google.com, surenb@google.com, zokeefe@google.com, hannes@cmpxchg.org, rientjes@google.com, mhocko@suse.com, rdunlap@infradead.org, lorenzo.stoakes@oracle.com, Liam.Howlett@oracle.com Subject: [PATCH v5 03/12] khugepaged: generalize hugepage_vma_revalidate for mTHP support Date: Mon, 28 Apr 2025 12:12:09 -0600 Message-ID: <20250428181218.85925-4-npache@redhat.com> In-Reply-To: <20250428181218.85925-1-npache@redhat.com> References: <20250428181218.85925-1-npache@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.111 Content-Type: text/plain; charset="utf-8" For khugepaged to support different mTHP orders, we must generalize this function for arbitrary orders. No functional change in this patch. Reviewed-by: Baolin Wang Co-developed-by: Dev Jain Signed-off-by: Dev Jain Signed-off-by: Nico Pache --- mm/khugepaged.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/mm/khugepaged.c b/mm/khugepaged.c index 3690a6ec5883..ddb805356e05 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -920,7 +920,7 @@ static int khugepaged_find_target_node(struct collapse_= control *cc) static int hugepage_vma_revalidate(struct mm_struct *mm, unsigned long add= ress, bool expect_anon, struct vm_area_struct **vmap, - struct collapse_control *cc) + struct collapse_control *cc, int order) { struct vm_area_struct *vma; unsigned long tva_flags =3D cc->is_khugepaged ? TVA_ENFORCE_SYSFS : 0; @@ -932,9 +932,9 @@ static int hugepage_vma_revalidate(struct mm_struct *mm= , unsigned long address, if (!vma) return SCAN_VMA_NULL; =20 - if (!thp_vma_suitable_order(vma, address, PMD_ORDER)) + if (!thp_vma_suitable_order(vma, address, order)) return SCAN_ADDRESS_RANGE; - if (!thp_vma_allowable_order(vma, vma->vm_flags, tva_flags, PMD_ORDER)) + if (!thp_vma_allowable_order(vma, vma->vm_flags, tva_flags, order)) return SCAN_VMA_CHECK; /* * Anon VMA expected, the address may be unmapped then @@ -1130,7 +1130,7 @@ static int collapse_huge_page(struct mm_struct *mm, u= nsigned long address, goto out_nolock; =20 mmap_read_lock(mm); - result =3D hugepage_vma_revalidate(mm, address, true, &vma, cc); + result =3D hugepage_vma_revalidate(mm, address, true, &vma, cc, HPAGE_PMD= _ORDER); if (result !=3D SCAN_SUCCEED) { mmap_read_unlock(mm); goto out_nolock; @@ -1164,7 +1164,7 @@ static int collapse_huge_page(struct mm_struct *mm, u= nsigned long address, * mmap_lock. */ mmap_write_lock(mm); - result =3D hugepage_vma_revalidate(mm, address, true, &vma, cc); + result =3D hugepage_vma_revalidate(mm, address, true, &vma, cc, HPAGE_PMD= _ORDER); if (result !=3D SCAN_SUCCEED) goto out_up_write; /* check if the pmd is still valid */ @@ -2792,7 +2792,7 @@ int madvise_collapse(struct vm_area_struct *vma, stru= ct vm_area_struct **prev, mmap_read_lock(mm); mmap_locked =3D true; result =3D hugepage_vma_revalidate(mm, addr, false, &vma, - cc); + cc, HPAGE_PMD_ORDER); if (result !=3D SCAN_SUCCEED) { last_fail =3D result; goto out_nolock; --=20 2.48.1