29 				   unsigned long addr, pmd_t *pmd,
32 			   pmd_t *pmd, unsigned long addr, unsigned long next);
33 int zap_huge_pmd(struct mmu_gather *tlb, struct vm_area_struct *vma, pmd_t *pmd,
40 		    pmd_t *pmd, unsigned long addr, pgprot_t newprot,
46  * vmf_insert_pfn_pmd - insert a pmd size pfn
52  * Insert a pmd size pfn. See vmf_insert_pfn() for additional info.
132  *     check that the PMD-aligned addresses in the VMA map to
133  *     PMD-aligned offsets within the file, else the hugepage will
134  *     not be PMD-mappable.
192 void __split_huge_pmd(struct vm_area_struct *vma, pmd_t *pmd,
226 spinlock_t *__pmd_trans_huge_lock(pmd_t *pmd, struct vm_area_struct *vma);
229 static inline int is_swap_pmd(pmd_t pmd)  in is_swap_pmd()  argument
231 	return !pmd_none(pmd) && !pmd_present(pmd);  in is_swap_pmd()
235 static inline spinlock_t *pmd_trans_huge_lock(pmd_t *pmd,  in pmd_trans_huge_lock()  argument
238 	if (is_swap_pmd(*pmd) || pmd_trans_huge(*pmd) || pmd_devmap(*pmd))  in pmd_trans_huge_lock()
239 		return __pmd_trans_huge_lock(pmd, vma);  in pmd_trans_huge_lock()
253  * folio_test_pmd_mappable - Can we map this folio with a PMD?
262 		pmd_t *pmd, int flags, struct dev_pagemap **pgmap);
276 static inline bool is_huge_zero_pmd(pmd_t pmd)  in is_huge_zero_pmd()  argument
278 	return pmd_present(pmd) && READ_ONCE(huge_zero_pfn) == pmd_pfn(pmd);  in is_huge_zero_pmd()
356 static inline void __split_huge_pmd(struct vm_area_struct *vma, pmd_t *pmd,  in __split_huge_pmd()  argument
383 static inline int is_swap_pmd(pmd_t pmd)  in is_swap_pmd()  argument
387 static inline spinlock_t *pmd_trans_huge_lock(pmd_t *pmd,  in pmd_trans_huge_lock()  argument
408 static inline bool is_huge_zero_pmd(pmd_t pmd)  in is_huge_zero_pmd()  argument
424 	unsigned long addr, pmd_t *pmd, int flags, struct dev_pagemap **pgmap)  in follow_devmap_pmd()  argument