From 2beaf153e1d041e0a61e3aae618294f4a037055d Mon Sep 17 00:00:00 2001 From: Liam Howlett Date: Mon, 28 Jun 2021 19:39:32 -0700 Subject: 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 Reviewed-by: Laurent Dufour Acked-by: David Hildenbrand Acked-by: Davidlohr Bueso Cc: Geert Uytterhoeven Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/misc/sgi-gru/grufault.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/misc/sgi-gru/grufault.c b/drivers/misc/sgi-gru/grufault.c index 723825524ea0..d7ef61e602ed 100644 --- a/drivers/misc/sgi-gru/grufault.c +++ b/drivers/misc/sgi-gru/grufault.c @@ -49,8 +49,8 @@ struct vm_area_struct *gru_find_vma(unsigned long vaddr) { struct vm_area_struct *vma; - vma = find_vma(current->mm, vaddr); - if (vma && vma->vm_start <= vaddr && vma->vm_ops == &gru_vm_ops) + vma = vma_lookup(current->mm, vaddr); + if (vma && vma->vm_ops == &gru_vm_ops) return vma; return NULL; } -- cgit v1.2.3-59-g8ed1b