The quilt patch titled
Subject: mm/hugetlb: convert get_hwpoison_huge_page() to folios
has been removed from the -mm tree. Its filename was
mm-hugetlb-convert-get_hwpoison_huge_page-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@xxxxxxxxxx>
Subject: mm/hugetlb: convert get_hwpoison_huge_page() to folios
Date: Wed, 18 Jan 2023 09:40:39 -0800
Straightforward conversion of get_hwpoison_huge_page() to
get_hwpoison_hugetlb_folio(). Reduces two references to a head page in
memory-failure.c
[arnd@xxxxxxxx: fix get_hwpoison_hugetlb_folio() stub]
Link: https://lkml.kernel.org/r/20230119111920.635260-1-arnd@xxxxxxxxxx
Link: https://lkml.kernel.org/r/20230118174039.14247-1-sidhartha.kumar@xxxxxxxxxx
Signed-off-by: Sidhartha Kumar <sidhartha.kumar@xxxxxxxxxx>
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Acked-by: Naoya Horiguchi <naoya.horiguchi@xxxxxxx>
Reviewed-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Cc: Muchun Song <songmuchun@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
--- a/include/linux/hugetlb.h~mm-hugetlb-convert-get_hwpoison_huge_page-to-folios
+++ a/include/linux/hugetlb.h
@@ -172,7 +172,7 @@ bool hugetlb_reserve_pages(struct inode
long hugetlb_unreserve_pages(struct inode *inode, long start, long end,
long freed);
int isolate_hugetlb(struct page *page, struct list_head *list);
-int get_hwpoison_huge_page(struct page *page, bool *hugetlb, bool unpoison);
+int get_hwpoison_hugetlb_folio(struct folio *folio, bool *hugetlb, bool unpoison);
int get_huge_page_for_hwpoison(unsigned long pfn, int flags,
bool *migratable_cleared);
void putback_active_hugepage(struct page *page);
@@ -418,7 +418,7 @@ static inline int isolate_hugetlb(struct
return -EBUSY;
}
-static inline int get_hwpoison_huge_page(struct page *page, bool *hugetlb, bool unpoison)
+static inline int get_hwpoison_hugetlb_folio(struct folio *folio, bool *hugetlb, bool unpoison)
{
return 0;
}
--- a/mm/hugetlb.c~mm-hugetlb-convert-get_hwpoison_huge_page-to-folios
+++ a/mm/hugetlb.c
@@ -7268,18 +7268,18 @@ unlock:
return ret;
}
-int get_hwpoison_huge_page(struct page *page, bool *hugetlb, bool unpoison)
+int get_hwpoison_hugetlb_folio(struct folio *folio, bool *hugetlb, bool unpoison)
{
int ret = 0;
*hugetlb = false;
spin_lock_irq(&hugetlb_lock);
- if (PageHeadHuge(page)) {
+ if (folio_test_hugetlb(folio)) {
*hugetlb = true;
- if (HPageFreed(page))
+ if (folio_test_hugetlb_freed(folio))
ret = 0;
- else if (HPageMigratable(page) || unpoison)
- ret = get_page_unless_zero(page);
+ else if (folio_test_hugetlb_migratable(folio) || unpoison)
+ ret = folio_try_get(folio);
else
ret = -EBUSY;
}
--- a/mm/memory-failure.c~mm-hugetlb-convert-get_hwpoison_huge_page-to-folios
+++ a/mm/memory-failure.c
@@ -1257,28 +1257,28 @@ static inline bool HWPoisonHandlable(str
static int __get_hwpoison_page(struct page *page, unsigned long flags)
{
- struct page *head = compound_head(page);
+ struct folio *folio = page_folio(page);
int ret = 0;
bool hugetlb = false;
- ret = get_hwpoison_huge_page(head, &hugetlb, false);
+ ret = get_hwpoison_hugetlb_folio(folio, &hugetlb, false);
if (hugetlb)
return ret;
/*
- * This check prevents from calling get_page_unless_zero() for any
- * unsupported type of page in order to reduce the risk of unexpected
- * races caused by taking a page refcount.
+ * This check prevents from calling folio_try_get() for any
+ * unsupported type of folio in order to reduce the risk of unexpected
+ * races caused by taking a folio refcount.
*/
- if (!HWPoisonHandlable(head, flags))
+ if (!HWPoisonHandlable(&folio->page, flags))
return -EBUSY;
- if (get_page_unless_zero(head)) {
- if (head == compound_head(page))
+ if (folio_try_get(folio)) {
+ if (folio == page_folio(page))
return 1;
pr_info("%#lx cannot catch tail\n", page_to_pfn(page));
- put_page(head);
+ folio_put(folio);
}
return 0;
@@ -1347,11 +1347,11 @@ out:
static int __get_unpoison_page(struct page *page)
{
- struct page *head = compound_head(page);
+ struct folio *folio = page_folio(page);
int ret = 0;
bool hugetlb = false;
- ret = get_hwpoison_huge_page(head, &hugetlb, true);
+ ret = get_hwpoison_hugetlb_folio(folio, &hugetlb, true);
if (hugetlb)
return ret;
_
Patches currently in -mm which might be from sidhartha.kumar@xxxxxxxxxx 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
