[PATCH] mm/mempolicy: Remove BUG_ON() checks for VMA inside mpol_misplaced()

[Anshuman Khandual <khandual@linux.vnet.ibm.com>]

VMA and its address bounds checks are too late in this function.
They must have been verified earlier in the page fault sequence.
Hence just remove them.

Suggested-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
---
 mm/mempolicy.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 618ab12..3509b84 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -2172,17 +2172,12 @@ int mpol_misplaced(struct page *page, struct vm_area_struct *vma, unsigned long
 	int polnid = -1;
 	int ret = -1;
 
-	BUG_ON(!vma);
-
 	pol = get_vma_policy(vma, addr);
 	if (!(pol->flags & MPOL_F_MOF))
 		goto out;
 
 	switch (pol->mode) {
 	case MPOL_INTERLEAVE:
-		BUG_ON(addr >= vma->vm_end);
-		BUG_ON(addr < vma->vm_start);
-
 		pgoff = vma->vm_pgoff;
 		pgoff += (addr - vma->vm_start) >> PAGE_SHIFT;
 		polnid = offset_il_node(pol, vma, pgoff);
-- 
1.8.5.2

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