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| author | Miaohe Lin <linmiaohe@huawei.com> | 2021-09-02 14:53:45 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-09-03 09:58:11 -0700 |
| commit | be51eb18b81b2f0a0a562bac0f6fe0f4b05c439e (patch) | |
| tree | 6fbaae4bbb5117000db70afb017a0d4260a26da3 /mm/gup.c | |
| parent | 6401c4eb57f947a49eb144b5b0787cde3318e82e (diff) | |
| download | lwn-be51eb18b81b2f0a0a562bac0f6fe0f4b05c439e.tar.gz lwn-be51eb18b81b2f0a0a562bac0f6fe0f4b05c439e.zip | |
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: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/gup.c')
| -rw-r--r-- | mm/gup.c | 4 |
1 files changed, 2 insertions, 2 deletions
@@ -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); |