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Subject[PATCH mm-unstable 1/5] mm/mempolicy: Convert queue_pages_pmd() to queue_folios_pmd()
Date
The function now operates on a folio instead of
the page associated with a pmd.

This change is in preparation for the conversion of
queue_pages_required() to queue_folio_required() and migrate_page_add()
to migrate_folio_add().

Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
---
mm/mempolicy.c | 24 ++++++++++++------------
1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index fd99d303e34f..00fffa93adae 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -442,21 +442,21 @@ static inline bool queue_pages_required(struct page *page,
}

/*
- * queue_pages_pmd() has three possible return values:
- * 0 - pages are placed on the right node or queued successfully, or
+ * queue_folios_pmd() has three possible return values:
+ * 0 - folios are placed on the right node or queued successfully, or
* special page is met, i.e. huge 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 - is migration entry or only MPOL_MF_STRICT was specified and an
- * existing page was already on a node that does not follow the
+ * existing folio was already on a node that does not follow the
* policy.
*/
-static int queue_pages_pmd(pmd_t *pmd, spinlock_t *ptl, unsigned long addr,
+static int queue_folios_pmd(pmd_t *pmd, spinlock_t *ptl, unsigned long addr,
unsigned long end, struct mm_walk *walk)
__releases(ptl)
{
int ret = 0;
- struct page *page;
+ struct folio *folio;
struct queue_pages *qp = walk->private;
unsigned long flags;

@@ -464,19 +464,19 @@ static int queue_pages_pmd(pmd_t *pmd, spinlock_t *ptl, unsigned long addr,
ret = -EIO;
goto unlock;
}
- page = pmd_page(*pmd);
- if (is_huge_zero_page(page)) {
+ folio = pfn_folio(pmd_pfn(*pmd));
+ if (is_huge_zero_page(&folio->page)) {
walk->action = ACTION_CONTINUE;
goto unlock;
}
- if (!queue_pages_required(page, qp))
+ if (!queue_pages_required(&folio->page, qp))
goto unlock;

flags = qp->flags;
- /* go to thp migration */
+ /* go to folio migration */
if (flags & (MPOL_MF_MOVE | MPOL_MF_MOVE_ALL)) {
if (!vma_migratable(walk->vma) ||
- migrate_page_add(page, qp->pagelist, flags)) {
+ migrate_page_add(&folio->page, qp->pagelist, flags)) {
ret = 1;
goto unlock;
}
@@ -512,7 +512,7 @@ static int queue_pages_pte_range(pmd_t *pmd, unsigned long addr,

ptl = pmd_trans_huge_lock(pmd, vma);
if (ptl)
- return queue_pages_pmd(pmd, ptl, addr, end, walk);
+ return queue_folios_pmd(pmd, ptl, addr, end, walk);

if (pmd_trans_unstable(pmd))
return 0;
--
2.38.1
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