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misc/sgi-gru/grufault: use vma_lookup() in gru_find_vma()
Use vma_lookup() to find the VMA at a specific address. As vma_lookup() will return NULL if the address is not within any VMA, the start address no longer needs to be validated. Link: https://lkml.kernel.org/r/20210521174745.2219620-16-Liam.Howlett@Oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com> Acked-by: David Hildenbrand <david@redhat.com> Acked-by: Davidlohr Bueso <dbueso@suse.de> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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1 changed files with 2 additions and 2 deletions
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@ -49,8 +49,8 @@ struct vm_area_struct *gru_find_vma(unsigned long vaddr)
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{
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struct vm_area_struct *vma;
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vma = find_vma(current->mm, vaddr);
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if (vma && vma->vm_start <= vaddr && vma->vm_ops == &gru_vm_ops)
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vma = vma_lookup(current->mm, vaddr);
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if (vma && vma->vm_ops == &gru_vm_ops)
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return vma;
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return NULL;
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}
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