After previous cleanup, extent is the minimal step for both source and destination. This means when extent is HPAGE_PMD_SIZE or PMD_SIZE, old_addr and new_addr are properly aligned too. Since these two functions are only invoked in move_page_tables, it is safe to remove the check now. Signed-off-by: Wei Yang <richardw.yang@xxxxxxxxxxxxxxx> --- mm/huge_memory.c | 3 --- mm/mremap.c | 3 --- 2 files changed, 6 deletions(-) diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 8f1bbbf01f5b..cc98d0f07d0a 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -1878,9 +1878,6 @@ bool move_huge_pmd(struct vm_area_struct *vma, unsigned long old_addr, struct mm_struct *mm = vma->vm_mm; bool force_flush = false; - if ((old_addr & ~HPAGE_PMD_MASK) || (new_addr & ~HPAGE_PMD_MASK)) - return false; - /* * The destination pmd shouldn't be established, free_pgtables() * should have release it. diff --git a/mm/mremap.c b/mm/mremap.c index 37335a10779d..5d7597fb3023 100644 --- a/mm/mremap.c +++ b/mm/mremap.c @@ -199,9 +199,6 @@ static bool move_normal_pmd(struct vm_area_struct *vma, unsigned long old_addr, struct mm_struct *mm = vma->vm_mm; pmd_t pmd; - if ((old_addr & ~PMD_MASK) || (new_addr & ~PMD_MASK)) - return false; - /* * The destination pmd shouldn't be established, free_pgtables() * should have release it. -- 2.17.1
