fs/proc/task_mmu: use folio API in pte_is_pinned()

Patch series "mm: remove page_maybe_dma_pinned() and page_mkclean()".

Most page_maybe_dma_pinned() and page_mkclean() callers have been
converted to the folio equivalents, after two more convertsions,
remove them and update the comment and documention.

This patch (of 4):

Convert to use vm_normal_folio() and folio_maybe_dma_pinned() API, which
helps to remove page_maybe_dma_pinned() in the subsequent change.

Link: https://lkml.kernel.org/r/20240604114822.2089819-1-wangkefeng.wang@huawei.com
Link: https://lkml.kernel.org/r/20240604114822.2089819-2-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Helge Deller <deller@gmx.de>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index f2e83284aaf8257f2d24c23b0ae9dfa854ff22e5..93fb2c61b15479023fd56b7ef19b0b89d4c92000 100644 (file)
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -1100,7 +1100,7 @@ struct clear_refs_private {
 
 static inline bool pte_is_pinned(struct vm_area_struct *vma, unsigned long addr, pte_t pte)
 {
-       struct page *page;
+       struct folio *folio;
 
        if (!pte_write(pte))
                return false;
@@ -1108,10 +1108,10 @@ static inline bool pte_is_pinned(struct vm_area_struct *vma, unsigned long addr,
                return false;
        if (likely(!test_bit(MMF_HAS_PINNED, &vma->vm_mm->flags)))
                return false;
-       page = vm_normal_page(vma, addr, pte);
-       if (!page)
+       folio = vm_normal_folio(vma, addr, pte);
+       if (!folio)
                return false;
-       return page_maybe_dma_pinned(page);
+       return folio_maybe_dma_pinned(folio);
 }
 
 static inline void clear_soft_dirty(struct vm_area_struct *vma,