if (pgd_present(*pud)) { 
if (pgd_present(*pud))		/* Another has populated it */ 
pmd_t fastcall *__pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigned long address){	pmd_t *new;	if (mm != &init_mm)		/* Temporary bridging hack */		spin_unlock(&mm->page_table_lock);	new = pmd_alloc_one(mm, address);	if (!new) {		if (mm != &init_mm)	/* Temporary bridging hack */			spin_lock(&mm->page_table_lock);		return NULL;	}	spin_lock(&mm->page_table_lock);#ifndef __ARCH_HAS_4LEVEL_HACK	if (pud_present(*pud)) {		pmd_free(new);		goto out;	}	pud_populate(mm, pud, new);#else	if (pgd_present(*pud)) {		pmd_free(new);		goto out;	}	pgd_populate(mm, pud, new);#endif /* __ARCH_HAS_4LEVEL_HACK */ out:	if (mm == &init_mm)		/* Temporary bridging hack */		spin_unlock(&mm->page_table_lock);	return pmd_offset(pud, address);}
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/1bb3630e89cb8a7b3d3807629c20c5bad88290ff/memory.c/clean/mm/memory.c