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-rw-r--r--mm/memory.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/mm/memory.c b/mm/memory.c
index 2ba8ccdd5a85..7751644f778b 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1981,6 +1981,8 @@ static int validate_page_before_insert(struct page *page)
{
struct folio *folio = page_folio(page);
+ if (!folio_ref_count(folio))
+ return -EINVAL;
if (folio_test_anon(folio) || folio_test_slab(folio) ||
page_has_type(page))
return -EINVAL;
@@ -2035,8 +2037,6 @@ static int insert_page_in_batch_locked(struct vm_area_struct *vma, pte_t *pte,
{
int err;
- if (!page_count(page))
- return -EINVAL;
err = validate_page_before_insert(page);
if (err)
return err;
@@ -2170,8 +2170,6 @@ int vm_insert_page(struct vm_area_struct *vma, unsigned long addr,
{
if (addr < vma->vm_start || addr >= vma->vm_end)
return -EFAULT;
- if (!page_count(page))
- return -EINVAL;
if (!(vma->vm_flags & VM_MIXEDMAP)) {
BUG_ON(mmap_read_trylock(vma->vm_mm));
BUG_ON(vma->vm_flags & VM_PFNMAP);