1 files changed, 3 insertions, 2 deletions

diff --git a/include/linux/mm.h b/include/linux/mm.h
index c74a74ca401d..17518fe0b311 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -637,9 +637,9 @@ extern unsigned long do_mremap(unsigned long addr,
  * These functions are passed a count `nr_to_scan' and a gfpmask.  They should
  * scan `nr_to_scan' objects, attempting to free them.
  *
- * The callback must the number of objects which remain in the cache.
+ * The callback must return the number of objects which remain in the cache.
  *
- * The callback will be passes nr_to_scan == 0 when the VM is querying the
+ * The callback will be passed nr_to_scan == 0 when the VM is querying the
  * cache size, so a fastpath for that case is appropriate.
  */
 typedef int (*shrinker_t)(int nr_to_scan, unsigned int gfp_mask);
@@ -726,6 +726,7 @@ extern void __vma_link_rb(struct mm_struct *, struct vm_area_struct *,
 extern struct vm_area_struct *copy_vma(struct vm_area_struct **,
         unsigned long addr, unsigned long len, pgoff_t pgoff);
 extern void exit_mmap(struct mm_struct *);
+extern int may_expand_vm(struct mm_struct *mm, unsigned long npages);
 
 extern unsigned long get_unmapped_area(struct file *, unsigned long, unsigned long, unsigned long, unsigned long);