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charset="utf-8" Allow unmap to work with an mshare host mm. Signed-off-by: Anthony Yznaga --- mm/vma.c | 10 ++++++---- mm/vma.h | 1 + 2 files changed, 7 insertions(+), 4 deletions(-) diff --git a/mm/vma.c b/mm/vma.c index a7fbd339d259..c09b2e1a08e6 100644 --- a/mm/vma.c +++ b/mm/vma.c @@ -1265,7 +1265,7 @@ static void vms_complete_munmap_vmas(struct vma_munma= p_struct *vms, struct vm_area_struct *vma; struct mm_struct *mm; =20 - mm =3D current->mm; + mm =3D vms->mm; mm->map_count -=3D vms->vma_count; mm->locked_vm -=3D vms->locked_vm; if (vms->unlock) @@ -1473,13 +1473,15 @@ static int vms_gather_munmap_vmas(struct vma_munmap= _struct *vms, * @start: The aligned start address to munmap * @end: The aligned end address to munmap * @uf: The userfaultfd list_head + * @mm: The mm struct * @unlock: Unlock after the operation. Only unlocked on success */ static void init_vma_munmap(struct vma_munmap_struct *vms, struct vma_iterator *vmi, struct vm_area_struct *vma, unsigned long start, unsigned long end, struct list_head *uf, - bool unlock) + struct mm_struct *mm, bool unlock) { + vms->mm =3D mm; vms->vmi =3D vmi; vms->vma =3D vma; if (vma) { @@ -1523,7 +1525,7 @@ int do_vmi_align_munmap(struct vma_iterator *vmi, str= uct vm_area_struct *vma, struct vma_munmap_struct vms; int error; =20 - init_vma_munmap(&vms, vmi, vma, start, end, uf, unlock); + init_vma_munmap(&vms, vmi, vma, start, end, uf, mm, unlock); error =3D vms_gather_munmap_vmas(&vms, &mas_detach); if (error) goto gather_failed; @@ -2346,7 +2348,7 @@ static int __mmap_prepare(struct mmap_state *map, str= uct list_head *uf) =20 /* Find the first overlapping VMA and initialise unmap state. */ vms->vma =3D vma_find(vmi, map->end); - init_vma_munmap(vms, vmi, vms->vma, map->addr, map->end, uf, + init_vma_munmap(vms, vmi, vms->vma, map->addr, map->end, uf, map->mm, /* unlock =3D */ false); =20 /* OK, we have overlapping VMAs - prepare to unmap them. */ diff --git a/mm/vma.h b/mm/vma.h index 20fc1c2a32fd..4946d7dc13fd 100644 --- a/mm/vma.h +++ b/mm/vma.h @@ -51,6 +51,7 @@ struct vma_munmap_struct { unsigned long exec_vm; unsigned long stack_vm; unsigned long data_vm; + struct mm_struct *mm; }; =20 enum vma_merge_state { --=20 2.47.1