Messages in this thread Patch in this message | | | From | Liam Howlett <> | Subject | [PATCH] remap_file_pages: Use vma_lookup() instead of find_vma() | Date | Tue, 17 Aug 2021 13:52:49 +0000 |
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From: "Liam R. Howlett" <Liam.Howlett@Oracle.com>
Using vma_lookup() verifies the start address is contained in the found vma. This results in easier to read code.
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> --- mm/mmap.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/mm/mmap.c b/mm/mmap.c index d9aa54be6244..1a23d4575cc4 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -2994,14 +2994,11 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size, if (mmap_write_lock_killable(mm)) return -EINTR; - vma = find_vma(mm, start); + vma = vma_lookup(mm, start); if (!vma || !(vma->vm_flags & VM_SHARED)) goto out; - if (start < vma->vm_start) - goto out; - if (start + size > vma->vm_end) { struct vm_area_struct *next; -- 2.30.2
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