diff options
author | Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | 2015-08-25 14:32:00 +1000 |
---|---|---|
committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2015-09-09 12:11:54 +1000 |
commit | 6335f967907e93f5dcc8aade417a62e86224dfab (patch) | |
tree | b4deb8928c5892b71ec452cc6fb46e942f806137 /mm | |
parent | e2521e1f77dfabc1ada4eedf33525fe3a4cc7015 (diff) |
mm, madvise: use vma_is_anonymous() to check for anon VMA
!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>
Acked-by: Minchan Kim <minchan@kernel.org>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r-- | mm/madvise.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/madvise.c b/mm/madvise.c index fa6479aca0c9..16441f550cdf 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); |