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...-off-by: Alistair Popple <apopple at nvidia.com> Fixes: b756a3b5e7ea ("mm: device exclusive memory access") Cc: stable at vger.kernel.org --- mm/memory.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/mm/memory.c b/mm/memory.c index 8c8420934d60..b499bd283d8e 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -3623,8 +3623,19 @@ static vm_fault_t remove_device_exclusive_entry(struct vm_fault *vmf) struct vm_area_struct *vma = vmf->vma; struct mmu_notifier_range range; - if (!folio_lock_or_retry(folio, vma->vm_mm, vmf->flags)) + /* + * We need...

...l of the above are just little documentation and process suggestions, but the patch itself looks great, so please feel free to add: Reviewed-by: John Hubbard <jhubbard at nvidia.com> thanks, -- John Hubbard NVIDIA > > diff --git a/mm/memory.c b/mm/memory.c > index 8c8420934d60..b499bd283d8e 100644 > --- a/mm/memory.c > +++ b/mm/memory.c > @@ -3623,8 +3623,19 @@ static vm_fault_t remove_device_exclusive_entry(struct vm_fault *vmf) > struct vm_area_struct *vma = vmf->vma; > struct mmu_notifier_range range; > > - if (!folio_lock_or_retry(folio, vma->vm_mm...