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userfault; expand folio use in mfill_atomic_install_pte()
Call page_folio() a little earlier so we can use folio_mapping() instead of page_mapping(), saving a call to compound_head(). Link: https://lkml.kernel.org/r/20240423225552.4113447-6-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: David Hildenbrand <david@redhat.com> Cc: Eric Biggers <ebiggers@google.com> Cc: Sidhartha Kumar <sidhartha.kumar@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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@ -180,9 +180,9 @@ int mfill_atomic_install_pte(pmd_t *dst_pmd,
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pte_t _dst_pte, *dst_pte;
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bool writable = dst_vma->vm_flags & VM_WRITE;
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bool vm_shared = dst_vma->vm_flags & VM_SHARED;
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bool page_in_cache = page_mapping(page);
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spinlock_t *ptl;
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struct folio *folio;
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struct folio *folio = page_folio(page);
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bool page_in_cache = folio_mapping(folio);
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_dst_pte = mk_pte(page, dst_vma->vm_page_prot);
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_dst_pte = pte_mkdirty(_dst_pte);
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@ -212,7 +212,6 @@ int mfill_atomic_install_pte(pmd_t *dst_pmd,
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if (!pte_none_mostly(ptep_get(dst_pte)))
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goto out_unlock;
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folio = page_folio(page);
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if (page_in_cache) {
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/* Usually, cache pages are already added to LRU */
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if (newly_allocated)
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