This is a note to let you know that I've just added the patch titled
mm/mempolicy: convert queue_pages_pte_range() to queue_folios_pte_range()
to the 6.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
mm-mempolicy-convert-queue_pages_pte_range-to-queue_.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 35c8cbe38cb84466882c63f46dd0129bdba26456
Author: Vishal Moola (Oracle) <vishal.moola@xxxxxxxxx>
Date: Mon Jan 30 12:18:30 2023 -0800
mm/mempolicy: convert queue_pages_pte_range() to queue_folios_pte_range()
[ Upstream commit 3dae02bbd07f40e37bbfec2d77119628db461eaa ]
This function now operates on folios associated with ptes instead of
pages.
This change is in preparation for the conversion of queue_pages_required()
to queue_folio_required() and migrate_page_add() to migrate_folio_add().
Link: https://lkml.kernel.org/r/20230130201833.27042-4-vishal.moola@xxxxxxxxx
Signed-off-by: Vishal Moola (Oracle) <vishal.moola@xxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: Jane Chu <jane.chu@xxxxxxxxxx>
Cc: "Yin, Fengwei" <fengwei.yin@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Stable-dep-of: 24526268f4e3 ("mm: mempolicy: keep VMA walk if both MPOL_MF_STRICT and MPOL_MF_MOVE are specified")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 3a291026e1896..2ae6c8f18aba1 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -491,19 +491,19 @@ static int queue_folios_pmd(pmd_t *pmd, spinlock_t *ptl, unsigned long addr,
* Scan through pages checking if pages follow certain conditions,
* and move them to the pagelist if they do.
*
- * queue_pages_pte_range() has three possible return values:
- * 0 - pages are placed on the right node or queued successfully, or
+ * queue_folios_pte_range() has three possible return values:
+ * 0 - folios are placed on the right node or queued successfully, or
* special page is met, i.e. zero page.
- * 1 - there is unmovable page, and MPOL_MF_MOVE* & MPOL_MF_STRICT were
+ * 1 - there is unmovable folio, and MPOL_MF_MOVE* & MPOL_MF_STRICT were
* specified.
- * -EIO - only MPOL_MF_STRICT was specified and an existing page was already
+ * -EIO - only MPOL_MF_STRICT was specified and an existing folio was already
* on a node that does not follow the policy.
*/
-static int queue_pages_pte_range(pmd_t *pmd, unsigned long addr,
+static int queue_folios_pte_range(pmd_t *pmd, unsigned long addr,
unsigned long end, struct mm_walk *walk)
{
struct vm_area_struct *vma = walk->vma;
- struct page *page;
+ struct folio *folio;
struct queue_pages *qp = walk->private;
unsigned long flags = qp->flags;
bool has_unmovable = false;
@@ -521,16 +521,16 @@ static int queue_pages_pte_range(pmd_t *pmd, unsigned long addr,
for (; addr != end; pte++, addr += PAGE_SIZE) {
if (!pte_present(*pte))
continue;
- page = vm_normal_page(vma, addr, *pte);
- if (!page || is_zone_device_page(page))
+ folio = vm_normal_folio(vma, addr, *pte);
+ if (!folio || folio_is_zone_device(folio))
continue;
/*
- * vm_normal_page() filters out zero pages, but there might
- * still be PageReserved pages to skip, perhaps in a VDSO.
+ * vm_normal_folio() filters out zero pages, but there might
+ * still be reserved folios to skip, perhaps in a VDSO.
*/
- if (PageReserved(page))
+ if (folio_test_reserved(folio))
continue;
- if (!queue_pages_required(page, qp))
+ if (!queue_pages_required(&folio->page, qp))
continue;
if (flags & (MPOL_MF_MOVE | MPOL_MF_MOVE_ALL)) {
/* MPOL_MF_STRICT must be specified if we get here */
@@ -544,7 +544,7 @@ static int queue_pages_pte_range(pmd_t *pmd, unsigned long addr,
* temporary off LRU pages in the range. Still
* need migrate other LRU pages.
*/
- if (migrate_page_add(page, qp->pagelist, flags))
+ if (migrate_page_add(&folio->page, qp->pagelist, flags))
has_unmovable = true;
} else
break;
@@ -705,7 +705,7 @@ static int queue_pages_test_walk(unsigned long start, unsigned long end,
static const struct mm_walk_ops queue_pages_walk_ops = {
.hugetlb_entry = queue_pages_hugetlb,
- .pmd_entry = queue_pages_pte_range,
+ .pmd_entry = queue_folios_pte_range,
.test_walk = queue_pages_test_walk,
};
