migration: migrate_vmas should check "vma"

[safe/jmp/linux-2.6] / mm / migrate.c

diff --git a/mm/migrate.c b/mm/migrate.c
index 2bb4e1d..a9eff3f 100644 (file)
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -1129,7 +1129,7 @@ int migrate_vmas(struct mm_struct *mm, const nodemask_t *to,
        struct vm_area_struct *vma;
        int err = 0;
 
-       for(vma = mm->mmap; vma->vm_next && !err; vma = vma->vm_next) {
+       for (vma = mm->mmap; vma && !err; vma = vma->vm_next) {
                if (vma->vm_ops && vma->vm_ops->migrate) {
                        err = vma->vm_ops->migrate(vma, to, from, flags);
                        if (err)