LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Miaohe Lin <linmiaohe@huawei.com>
To: <akpm@linux-foundation.org>
Cc: <imbrenda@linux.ibm.com>, <kirill.shutemov@linux.intel.com>,
	<jack@suse.cz>, <jhubbard@nvidia.com>, <linux-mm@kvack.org>,
	<linux-kernel@vger.kernel.org>, <linmiaohe@huawei.com>
Subject: [PATCH 5/5] mm: gup: use helper PAGE_ALIGNED in populate_vma_page_range()
Date: Sat, 7 Aug 2021 17:36:20 +0800	[thread overview]
Message-ID: <20210807093620.21347-6-linmiaohe@huawei.com> (raw)
In-Reply-To: <20210807093620.21347-1-linmiaohe@huawei.com>

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

Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
---
 mm/gup.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/gup.c b/mm/gup.c
index 8c89e614d4aa..802a3deb50cd 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -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);
-- 
2.23.0


  parent reply	other threads:[~2021-08-07  9:36 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-07  9:36 [PATCH 0/5] Cleanups and fixup for gup Miaohe Lin
2021-08-07  9:36 ` [PATCH 1/5] mm: gup: remove set but unused local variable major Miaohe Lin
2021-08-09  9:21   ` David Hildenbrand
2021-08-07  9:36 ` [PATCH 2/5] mm: gup: remove unneed local variable orig_refs Miaohe Lin
2021-08-09  9:22   ` David Hildenbrand
2021-08-07  9:36 ` [PATCH 3/5] mm: gup: remove useless BUG_ON in __get_user_pages() Miaohe Lin
2021-08-09  9:23   ` David Hildenbrand
2021-08-07  9:36 ` [PATCH 4/5] mm: gup: fix potential pgmap refcnt leak in __gup_device_huge() Miaohe Lin
2021-08-07 18:41   ` Andrew Morton
2021-08-07 18:45     ` Andrew Morton
2021-08-08 21:16       ` John Hubbard
2021-08-07  9:36 ` Miaohe Lin [this message]
2021-08-09  9:24   ` [PATCH 5/5] mm: gup: use helper PAGE_ALIGNED in populate_vma_page_range() David Hildenbrand
2021-08-08 21:13 ` [PATCH 0/5] Cleanups and fixup for gup John Hubbard
2021-08-09  9:39 ` Claudio Imbrenda

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210807093620.21347-6-linmiaohe@huawei.com \
    --to=linmiaohe@huawei.com \
    --cc=akpm@linux-foundation.org \
    --cc=imbrenda@linux.ibm.com \
    --cc=jack@suse.cz \
    --cc=jhubbard@nvidia.com \
    --cc=kirill.shutemov@linux.intel.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --subject='Re: [PATCH 5/5] mm: gup: use helper PAGE_ALIGNED in populate_vma_page_range()' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).