aboutsummaryrefslogtreecommitdiff
path: root/include/linux/migrate.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/migrate.h')
-rw-r--r--include/linux/migrate.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/migrate.h b/include/linux/migrate.h
index 48148e0cdbd..75e55dcdeb1 100644
--- a/include/linux/migrate.h
+++ b/include/linux/migrate.h
@@ -5,6 +5,14 @@
typedef struct page *new_page_t(struct page *, unsigned long private, int **);
+/* Check if a vma is migratable */
+static inline int vma_migratable(struct vm_area_struct *vma)
+{
+ if (vma->vm_flags & (VM_IO|VM_HUGETLB|VM_PFNMAP|VM_RESERVED))
+ return 0;
+ return 1;
+}
+
#ifdef CONFIG_MIGRATION
extern int isolate_lru_page(struct page *p, struct list_head *pagelist);
extern int putback_lru_pages(struct list_head *l);