From: Deming Wang <wangdeming@inspur.com>
To: <akpm@linux-foundation.org>
Cc: <linux-mm@kvack.org>, <linux-kernel@vger.kernel.org>,
Deming Wang <wangdeming@inspur.com>
Subject: [PATCH] mm: use vma_lookup() instead of find_vma()
Date: Thu, 6 Oct 2022 23:03:45 -0400 [thread overview]
Message-ID: <20221007030345.5029-1-wangdeming@inspur.com> (raw)
Using vma_lookup() verifies the start address is contained in the found
vma. This results in easier to read the code.
Signed-off-by: Deming Wang <wangdeming@inspur.com>
---
mm/mincore.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/mm/mincore.c b/mm/mincore.c
index fa200c14185f..e7e046fe17d7 100644
--- a/mm/mincore.c
+++ b/mm/mincore.c
@@ -190,8 +190,8 @@ static long do_mincore(unsigned long addr, unsigned long pages, unsigned char *v
unsigned long end;
int err;
- vma = find_vma(current->mm, addr);
- if (!vma || addr < vma->vm_start)
+ vma = vma_lookup(current->mm, addr);
+ if (!vma)
return -ENOMEM;
end = min(vma->vm_end, addr + (pages << PAGE_SHIFT));
if (!can_do_mincore(vma)) {
--
2.27.0
reply other threads:[~2022-10-08 9:28 UTC|newest]
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