mm: introduce vma detached flag

[linux-block.git] / mm / mmap.c

diff --git a/mm/mmap.c b/mm/mmap.c
index 18aed0ea6bd317e1906791359539cc894be8d1a8..b42f58591b9a53f61949a0fb05bd81cadd99b5e8 100644 (file)
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -599,6 +599,7 @@ static inline void vma_complete(struct vma_prepare *vp,
 
        if (vp->remove) {
 again:
+               vma_mark_detached(vp->remove, true);
                if (vp->file) {
                        uprobe_munmap(vp->remove, vp->remove->vm_start,
                                      vp->remove->vm_end);
@@ -2276,6 +2277,7 @@ static inline int munmap_sidetree(struct vm_area_struct *vma,
        if (mas_store_gfp(mas_detach, vma, GFP_KERNEL))
                return -ENOMEM;
 
+       vma_mark_detached(vma, true);
        if (vma->vm_flags & VM_LOCKED)
                vma->vm_mm->locked_vm -= vma_pages(vma);