[merged mm-stable] mm-memory-failure-convert-unpoison_memory-to-folios.patch removed from -mm tree

[merged mm-stable] mm-memory-failure-convert-unpoison_memory-to-folios.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: mm/memory-failure: convert unpoison_memory() to folios
has been removed from the -mm tree.  Its filename was
     mm-memory-failure-convert-unpoison_memory-to-folios.patch

This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Subject: mm/memory-failure: convert unpoison_memory() to folios
Date: Thu, 12 Jan 2023 14:46:08 -0600

Use a folio inside unpoison_memory which replaces a compound_head() call
with a call to page_folio().

Link: https://lkml.kernel.org/r/20230112204608.80136-9-sidhartha.kumar@oracle.com
Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Acked-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---


--- a/mm/memory-failure.c~mm-memory-failure-convert-unpoison_memory-to-folios
+++ a/mm/memory-failure.c
@@ -2335,7 +2335,6 @@ core_initcall(memory_failure_init);
  */
 int unpoison_memory(unsigned long pfn)
 {
-	struct page *page;
 	struct folio *folio;
 	struct page *p;
 	int ret = -EBUSY;
@@ -2348,7 +2347,6 @@ int unpoison_memory(unsigned long pfn)
 		return -ENXIO;
 
 	p = pfn_to_page(pfn);
-	page = compound_head(p);
 	folio = page_folio(p);
 
 	mutex_lock(&mf_mutex);
@@ -2360,31 +2358,31 @@ int unpoison_memory(unsigned long pfn)
 		goto unlock_mutex;
 	}
 
-	if (!PageHWPoison(p)) {
+	if (!folio_test_hwpoison(folio)) {
 		unpoison_pr_info("Unpoison: Page was already unpoisoned %#lx\n",
 				 pfn, &unpoison_rs);
 		goto unlock_mutex;
 	}
 
-	if (page_count(page) > 1) {
+	if (folio_ref_count(folio) > 1) {
 		unpoison_pr_info("Unpoison: Someone grabs the hwpoison page %#lx\n",
 				 pfn, &unpoison_rs);
 		goto unlock_mutex;
 	}
 
-	if (page_mapped(page)) {
+	if (folio_mapped(folio)) {
 		unpoison_pr_info("Unpoison: Someone maps the hwpoison page %#lx\n",
 				 pfn, &unpoison_rs);
 		goto unlock_mutex;
 	}
 
-	if (page_mapping(page)) {
+	if (folio_mapping(folio)) {
 		unpoison_pr_info("Unpoison: the hwpoison page has non-NULL mapping %#lx\n",
 				 pfn, &unpoison_rs);
 		goto unlock_mutex;
 	}
 
-	if (PageSlab(page) || PageTable(page) || PageReserved(page))
+	if (folio_test_slab(folio) || PageTable(&folio->page) || folio_test_reserved(folio))
 		goto unlock_mutex;
 
 	ret = get_hwpoison_page(p, MF_UNPOISON);
@@ -2397,7 +2395,7 @@ int unpoison_memory(unsigned long pfn)
 				goto unlock_mutex;
 			}
 		}
-		ret = TestClearPageHWPoison(page) ? 0 : -EBUSY;
+		ret = folio_test_clear_hwpoison(folio) ? 0 : -EBUSY;
 	} else if (ret < 0) {
 		if (ret == -EHWPOISON) {
 			ret = put_page_back_buddy(p) ? 0 : -EBUSY;
@@ -2410,14 +2408,14 @@ int unpoison_memory(unsigned long pfn)
 			count = folio_free_raw_hwp(folio, false);
 			if (count == 0) {
 				ret = -EBUSY;
-				put_page(page);
+				folio_put(folio);
 				goto unlock_mutex;
 			}
 		}
 
-		put_page(page);
+		folio_put(folio);
 		if (TestClearPageHWPoison(p)) {
-			put_page(page);
+			folio_put(folio);
 			ret = 0;
 		}
 	}
_

Patches currently in -mm which might be from sidhartha.kumar@oracle.com are

mm-hugetlb-convert-isolate_hugetlb-to-folios.patch
mm-hugetlb-convert-__update_and_free_page-to-folios.patch
mm-hugetlb-convert-dequeue_hugetlb_page-functions-to-folios.patch
mm-hugetlb-convert-alloc_surplus_huge_page-to-folios.patch
mm-hugetlb-increase-use-of-folios-in-alloc_huge_page.patch
mm-hugetlb-convert-alloc_migrate_huge_page-to-folios.patch
mm-hugetlb-convert-restore_reserve_on_error-to-folios.patch
mm-hugetlb-convert-demote_free_huge_page-to-folios.patch
mm-hugetlb-convert-hugetlb_install_page-to-folios.patch
mm-hugetlb-convert-hugetlbfs_pagecache_present-to-folios.patch
mm-hugetlb-convert-putback_active_hugepage-to-take-in-a-folio.patch
mm-hugetlb-convert-hugetlb-fault-paths-to-use-alloc_hugetlb_folio.patch
mm-hugetlb-convert-restore_reserve_on_error-to-take-in-a-folio.patch
mm-hugetlb-convert-hugetlb_add_to_page_cache-to-take-in-a-folio.patch
mm-hugetlb-convert-hugetlb_wp-to-take-in-a-folio.patch
documentation-mm-update-hugetlbfs-documentation-to-mention-alloc_hugetlb_folio.patch