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Signed-off-by: Sidhartha Kumar --- mm/memory_hotplug.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index a1e8c3e9ab08..ad09189786b1 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -1624,7 +1624,7 @@ static int do_migrate_range(unsigned long start_pfn, unsigned long end_pfn) { unsigned long pfn; - struct page *page, *head; + struct page *page; int ret = 0; LIST_HEAD(source); static DEFINE_RATELIMIT_STATE(migrate_rs, DEFAULT_RATELIMIT_INTERVAL, @@ -1637,14 +1637,13 @@ do_migrate_range(unsigned long start_pfn, unsigned long end_pfn) continue; page = pfn_to_page(pfn); folio = page_folio(page); - head = &folio->page; - if (PageHuge(page)) { - pfn = page_to_pfn(head) + compound_nr(head) - 1; + if (folio_test_hugetlb(folio)) { + pfn = folio_pfn(folio) + folio_nr_pages(folio) - 1; isolate_hugetlb(folio, &source); continue; - } else if (PageTransHuge(page)) - pfn = page_to_pfn(head) + thp_nr_pages(page) - 1; + } else if (folio_test_transhuge(folio)) + pfn = folio_pfn(folio) + thp_nr_pages(page) - 1; /* * HWPoison pages have elevated reference counts so the migration would From patchwork Mon Jan 23 20:23:47 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sidhartha Kumar X-Patchwork-Id: 47373 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:adf:eb09:0:0:0:0:0 with SMTP id s9csp1800509wrn; Mon, 23 Jan 2023 12:26:10 -0800 (PST) X-Google-Smtp-Source: AMrXdXugX7RxrQiz6Q2vD4X4zHDO7Z9k4Yw8zIaGP8OjjN6XL2QHcISZiR2BEJ3EagMvZsALkyEd X-Received: by 2002:a17:903:182:b0:194:7532:fb10 with SMTP id z2-20020a170903018200b001947532fb10mr34560256plg.40.1674505570699; Mon, 23 Jan 2023 12:26:10 -0800 (PST) ARC-Seal: i=2; a=rsa-sha256; t=1674505570; cv=pass; d=google.com; s=arc-20160816; b=kDVK5YWtuRNJJQHKWNRuSVCUHaeTbsjbvW9s2buRbdlxQGFUoA41ZTaA7LtViJWX1q 93j4E5aUi81HknwCG7xi1248CdUKmzhJTmTTCPCqBjpUW0whTacY3VAVKi/bi/UIv78N yWVsLfX/m6QS1/cboGHM+zhm25GrsfnJRkBnd1NN3j5ypOtVHjZm3GJofshoM3iCJLDp AeGZZ9u+Bvl+sO1HHjCVP7uaXU6caekbl0xt5ND8GczhxZaTD+mdSHjpPCbt7rZGkTfK mWHN32lpuSCWFl/S5P3S6gZ0cMthKG/A7/7ktMrDawSm03yVbGMrX7mfOADyr/gKpdCV K1vA== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:mime-version:content-transfer-encoding :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature:dkim-signature; bh=ldapDEpPRHIJo5jVjg1txg/5YKHge8AqOQ1FyTlMWVM=; b=lVYrTr+93Lov8atj9bRGbiw9yufU+GU9B6IphP8K+48eU76DtVrQWDYVxZICP8Lcm1 rffSBDAt/lZ/dGcfruNvqXZ1scOuZCuYK23o6/zStCq3La9UXpUhspSzQdNhSWoeVWgU M0I269msCweyQA24kFpfaI9SfM3XBzkr6AR0Ypzucs2kW1KODNG5943A2oz3mjjqev5w 2lGp8V97y+Eo/Re0DXr83Vbi9/FK+c6xIpvctR7eoaCQvtFq73X2F+ctJ7Xi5reStydP Ehw4frAkltTWWd/6xR8qGTiuk7Y39s8DwoCO52kAw7cGd8JQUfSaAEb6zDLVI0n30UVu 3F4g== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@oracle.com header.s=corp-2022-7-12 header.b=tcN3Syks; dkim=pass header.i=@oracle.onmicrosoft.com header.s=selector2-oracle-onmicrosoft-com header.b=tR3fm3OZ; arc=pass (i=1 spf=pass spfdomain=oracle.com dkim=pass dkdomain=oracle.com dmarc=pass fromdomain=oracle.com); spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=oracle.com Received: from out1.vger.email (out1.vger.email. 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Also remove a reference to a head page variable by using a folio instead. Signed-off-by: Sidhartha Kumar --- mm/memory_hotplug.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index ad09189786b1..d5a0672cdf3a 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -1579,7 +1579,8 @@ static int scan_movable_pages(unsigned long start, unsigned long end, unsigned long pfn; for (pfn = start; pfn < end; pfn++) { - struct page *page, *head; + struct page *page; + struct folio *folio; unsigned long skip; if (!pfn_valid(pfn)) @@ -1599,9 +1600,9 @@ static int scan_movable_pages(unsigned long start, unsigned long end, if (PageOffline(page) && page_count(page)) return -EBUSY; - if (!PageHuge(page)) + folio = page_folio(page); + if (!folio_test_hugetlb(folio)) continue; - head = compound_head(page); /* * This test is racy as we hold no reference or lock. The * hugetlb page could have been free'ed and head is no longer @@ -1609,9 +1610,9 @@ static int scan_movable_pages(unsigned long start, unsigned long end, * cases false positives and negatives are possible. Calling * code must deal with these scenarios. */ - if (HPageMigratable(head)) + if (folio_test_hugetlb_migratable(folio)) goto found; - skip = compound_nr(head) - (page - head); + skip = folio_nr_pages(folio) - (page - &folio->page); pfn += skip - 1; } return -ENOENT;