函数逻辑报告

函数名称：Returns* - 0 if PMD could not be locked* - 1 if PMD was locked but protections unchange and TLB flush unnecessary* - HPAGE_PMD_NR is protections changed and TLB flush necessary

函数原型：int change_huge_pmd(struct vm_area_struct *vma, pmd_t *pmd, unsigned long addr, pgprot_t newprot, int prot_numa)

返回类型：int

参数：