Re: [PATCH 2/2] Futex non-page-pinning fix

[Andrew Morton]

Jamie Lokier <jamie@xxxxxxxxxxxxx> wrote:
>
> 	3. For (vma & VM_SHARED), look up futex_qs keyed on
> 	   (vma->vm_file, vma->vm_pgoff + (uaddr - vma->vm_start) >>
> 	   PAGE_SHIFT, offset).

That's a bit meaningless in non-linear mappings.

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Jamie Lokier <jamie@xxxxxxxxxxxxx> wrote:
>
> 	3. For (vma & VM_SHARED), look up futex_qs keyed on
> 	   (vma->vm_file, vma->vm_pgoff + (uaddr - vma->vm_start) >>
> 	   PAGE_SHIFT, offset).

That's a bit meaningless in non-linear mappings.

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