Messages in this thread | | | Date | Wed, 6 Sep 2023 13:06:48 +0100 | From | Matthew Wilcox <> | Subject | Re: [PATCH] mm: as the same logic with queue_pages_range |
| |
On Wed, Sep 06, 2023 at 02:19:02PM +0800, Edward AD wrote: > Only dealwith queue_pages_range locked vmas.
What?
> Signed-off-by: Edward AD <eadavis@sina.com> > --- > mm/mempolicy.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/mm/mempolicy.c b/mm/mempolicy.c > index 42b5567e3773..13050b968479 100644 > --- a/mm/mempolicy.c > +++ b/mm/mempolicy.c > @@ -1342,6 +1342,8 @@ static long do_mbind(unsigned long start, unsigned long len, > vma_iter_init(&vmi, mm, start); > prev = vma_prev(&vmi); > for_each_vma_range(vmi, vma, end) { > + if (!vma || start < vma->vm_start) > + continue;
#define for_each_vma_range(__vmi, __vma, __end) \ while (((__vma) = vma_find(&(__vmi), (__end))) != NULL)
How can this produce a vma that is either NULL or has a vm_start after start?
| |