[PATCH 24/64] mm/thp: disable mmap_sem is_locked checks

[Davidlohr Bueso]

From: Davidlohr Bueso <dave@xxxxxxxxxxxx>

* THIS IS A HACK *

pud/pmd_trans_huge_lock() such that we don't have to
teach file_operations about mmrange.

No-Yet-Signed-off-by: Davidlohr Bueso <dbueso@xxxxxxx>
---
 include/linux/huge_mm.h | 2 --
 1 file changed, 2 deletions(-)

diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
index a8a126259bc4..7694c11b3575 100644
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h
@@ -189,7 +189,6 @@ static inline int is_swap_pmd(pmd_t pmd)
 static inline spinlock_t *pmd_trans_huge_lock(pmd_t *pmd,
 		struct vm_area_struct *vma)
 {
-	VM_BUG_ON_VMA(!rwsem_is_locked(&vma->vm_mm->mmap_sem), vma);
 	if (is_swap_pmd(*pmd) || pmd_trans_huge(*pmd) || pmd_devmap(*pmd))
 		return __pmd_trans_huge_lock(pmd, vma);
 	else
@@ -198,7 +197,6 @@ static inline spinlock_t *pmd_trans_huge_lock(pmd_t *pmd,
 static inline spinlock_t *pud_trans_huge_lock(pud_t *pud,
 		struct vm_area_struct *vma)
 {
-	VM_BUG_ON_VMA(!rwsem_is_locked(&vma->vm_mm->mmap_sem), vma);
 	if (pud_trans_huge(*pud) || pud_devmap(*pud))
 		return __pud_trans_huge_lock(pud, vma);
 	else
-- 
2.13.6