diff options
Diffstat (limited to 'mm/rmap.c')
| -rw-r--r-- | mm/rmap.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/mm/rmap.c b/mm/rmap.c index c229e48cf5a9..6a1829324053 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -1262,6 +1262,8 @@ void page_add_anon_rmap(struct page *page, struct vm_area_struct *vma, bool compound = flags & RMAP_COMPOUND; bool first; + VM_WARN_ON_FOLIO(folio_test_hugetlb(folio), folio); + /* Is page being mapped by PTE? Is this its first map to be added? */ if (likely(!compound)) { first = atomic_inc_and_test(&page->_mapcount); @@ -1343,6 +1345,7 @@ void folio_add_new_anon_rmap(struct folio *folio, struct vm_area_struct *vma, { int nr = folio_nr_pages(folio); + VM_WARN_ON_FOLIO(folio_test_hugetlb(folio), folio); VM_BUG_ON_VMA(address < vma->vm_start || address + (nr << PAGE_SHIFT) > vma->vm_end, vma); __folio_set_swapbacked(folio); @@ -2634,6 +2637,7 @@ void rmap_walk_locked(struct folio *folio, struct rmap_walk_control *rwc) void hugetlb_add_anon_rmap(struct folio *folio, struct vm_area_struct *vma, unsigned long address, rmap_t flags) { + VM_WARN_ON_FOLIO(!folio_test_hugetlb(folio), folio); VM_WARN_ON_FOLIO(!folio_test_anon(folio), folio); atomic_inc(&folio->_entire_mapcount); @@ -2646,6 +2650,8 @@ void hugetlb_add_anon_rmap(struct folio *folio, struct vm_area_struct *vma, void hugetlb_add_new_anon_rmap(struct folio *folio, struct vm_area_struct *vma, unsigned long address) { + VM_WARN_ON_FOLIO(!folio_test_hugetlb(folio), folio); + BUG_ON(address < vma->vm_start || address >= vma->vm_end); /* increment count (starts at -1) */ atomic_set(&folio->_entire_mapcount, 0); |