Commit be51eb18 authored by Miaohe Lin's avatar Miaohe Lin Committed by Linus Torvalds
Browse files

mm: gup: use helper PAGE_ALIGNED in populate_vma_page_range() 

Use helper PAGE_ALIGNED to check if address is aligned to PAGE_SIZE.
Minor readability improvement.

Link: https://lkml.kernel.org/r/20210807093620.21347-6-linmiaohe@huawei.com


Signed-off-by: default avatarMiaohe Lin <linmiaohe@huawei.com>
Reviewed-by: default avatarJohn Hubbard <jhubbard@nvidia.com>
Reviewed-by: default avatarDavid Hildenbrand <david@redhat.com>
Reviewed-by: default avatarClaudio Imbrenda <imbrenda@linux.ibm.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 6401c4eb

mm/gup.c

+2 −2
Original line number Diff line number Diff line
@@ -1471,8 +1471,8 @@ long populate_vma_page_range(struct vm_area_struct *vma, 
	unsigned long nr_pages = (end - start) / PAGE_SIZE;

	int gup_flags;



	VM_BUG_ON(start & ~PAGE_MASK);

	VM_BUG_ON(end   & ~PAGE_MASK);

	VM_BUG_ON(!PAGE_ALIGNED(start));

	VM_BUG_ON(!PAGE_ALIGNED(end));

	VM_BUG_ON_VMA(start < vma->vm_start, vma);

	VM_BUG_ON_VMA(end   > vma->vm_end, vma);

	mmap_assert_locked(mm);