static inline int io_remap_pmd_range(struct mm_struct *mm, pmd_t * pmd, unsigned long address, unsigned long size, unsigned long offset, pgprot_t prot, int space) { unsigned long end; address &= ~PGDIR_MASK; end = address + size; if (end > PGDIR_SIZE) end = PGDIR_SIZE; offset -= address; do { pte_t * pte = pte_alloc_map(mm, pmd, address); if (!pte) return -ENOMEM; io_remap_pte_range(mm, pte, address, end - address, address + offset, prot, space); address = (address + PMD_SIZE) & PMD_MASK; pmd++; } while (address < end); return 0; }
static inline int io_remap_pmd_range(pmd_t * pmd, unsigned long address, unsigned long size, unsigned long offset, pgprot_t prot, int space) { unsigned long end; address &= ~PGDIR_MASK; end = address + size; if (end > PGDIR_SIZE) end = PGDIR_SIZE; offset -= address; do { pte_t * pte = pte_alloc(pmd, address); if (!pte) return -ENOMEM; spin_lock(¤t->mm->page_table_lock); io_remap_pte_range(pte, address, end - address, address + offset, prot, space); spin_unlock(¤t->mm->page_table_lock); address = (address + PMD_SIZE) & PMD_MASK; pmd++; } while (address < end); return 0; }