Merge tag 'vfs-6.8.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

[linux.git] / mm / hugetlb.c

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 38c4477fda6a0a0714ee6cc659f5869e7f42ef26..c466551e2fd94ba897c1b59c309d6529fdd4a493 100644 (file)
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -1182,6 +1182,13 @@ static int is_vma_resv_set(struct vm_area_struct *vma, unsigned long flag)
        return (get_vma_private_data(vma) & flag) != 0;
 }
 
+bool __vma_private_lock(struct vm_area_struct *vma)
+{
+       return !(vma->vm_flags & VM_MAYSHARE) &&
+               get_vma_private_data(vma) & ~HPAGE_RESV_MASK &&
+               is_vma_resv_set(vma, HPAGE_RESV_OWNER);
+}
+
 void hugetlb_dup_vma_private(struct vm_area_struct *vma)
 {
        VM_BUG_ON_VMA(!is_vm_hugetlb_page(vma), vma);