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| author | Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | 2015-08-25 14:32:00 +1000 |
|---|---|---|
| committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2015-08-28 17:19:02 +1000 |
| commit | d4585425cccbc172abbbac23690d5e1f8e24ea71 (patch) | |
| tree | 2d25680a8c2947a26c1801fa052cca9058cfd5bd | |
| parent | 060086088c91de8b9a14b721353a759605997e22 (diff) | |
| download | linux-d4585425cccbc172abbbac23690d5e1f8e24ea71.tar.gz linux-d4585425cccbc172abbbac23690d5e1f8e24ea71.tar.xz | |
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>
| -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); |