On Wed, Aug 23, 2023 at 11:53:57AM +0500, Khadija Kamran wrote: > +++ b/include/linux/mm.h > @@ -3064,7 +3064,7 @@ void anon_vma_interval_tree_verify(struct anon_vma_chain *node); > avc; avc = anon_vma_interval_tree_iter_next(avc, start, last)) > > /* mmap.c */ > -extern int __vm_enough_memory(struct mm_struct *mm, long pages, int cap_sys_admin); > +extern int __vm_enough_memory(const struct mm_struct *mm, long pages, int cap_sys_admin); Could you remove the 'extern' when you touch a function prototype?