The patch titled
Subject: mm: gup: use helper PAGE_ALIGNED in populate_vma_page_range()
has been added to the -mm tree. Its filename is
mm-gup-use-helper-page_aligned-in-populate_vma_page_range.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/mm-gup-use-helper-page_aligned-in-populate_vma_page_range.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/mm-gup-use-helper-page_aligned-in-populate_vma_page_range.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Subject: 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@xxxxxxxxxx
Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Cc: Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx>
Cc: Jan Kara <jack@xxxxxxx>
Cc: John Hubbard <jhubbard@xxxxxxxxxx>
Cc: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/gup.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/mm/gup.c~mm-gup-use-helper-page_aligned-in-populate_vma_page_range
+++ a/mm/gup.c
@@ -1471,8 +1471,8 @@ long populate_vma_page_range(struct vm_a
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);
_
Patches currently in -mm which might be from linmiaohe@xxxxxxxxxx are
mm-gup-remove-set-but-unused-local-variable-major.patch
mm-gup-remove-unneed-local-variable-orig_refs.patch
mm-gup-remove-useless-bug_on-in-__get_user_pages.patch
mm-gup-fix-potential-pgmap-refcnt-leak-in-__gup_device_huge.patch
mm-gup-use-helper-page_aligned-in-populate_vma_page_range.patch
mm-vmscan-remove-the-pagedirty-check-after-madv_free-pages-are-page_ref_freezed.patch
mm-vmscan-remove-misleading-setting-to-sc-priority.patch
mm-vmscan-remove-unneeded-return-value-of-kswapd_run.patch
mm-vmscan-add-else-to-remove-check_pending-label.patch
mm-vmstat-correct-some-wrong-comments.patch
mm-vmstat-simplify-the-array-size-calculation.patch
mm-vmstat-remove-unneeded-return-value.patch
mm-zsmallocc-close-race-window-between-zs_pool_dec_isolated-and-zs_unregister_migration.patch
mm-zsmallocc-combine-two-atomic-ops-in-zs_pool_dec_isolated.patch
