Messages in this thread Patch in this message | | | From | "Kirill A. Shutemov" <> | Subject | [PATCH 4/5] mm, madvise: use vma_is_anonymous() to check for anon VMA | Date | Mon, 13 Jul 2015 13:54:11 +0300 |
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!vma->vm_file is not reliable to detect anon VMA, because not all drivers bother set it. Let's use vma_is_anonymous() instead.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Minchan Kim <minchan@kernel.org> --- mm/madvise.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/madvise.c b/mm/madvise.c index 70ce0d425d72..a4fae076f61d 100644 --- a/mm/madvise.c +++ b/mm/madvise.c @@ -393,7 +393,7 @@ static int madvise_free_single_vma(struct vm_area_struct *vma, return -EINVAL; /* MADV_FREE works for only anon vma at the moment */ - if (vma->vm_file) + if (!vma_is_anonymous(vma)) return -EINVAL; start = max(vma->vm_start, start_addr); -- 2.1.4
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