| From | Davidlohr Bueso <> | Subject | [PATCH 24/64] mm/thp: disable mmap_sem is_locked checks | Date | Mon, 5 Feb 2018 02:27:14 +0100 |
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From: Davidlohr Bueso <dave@stgolabs.net>
* 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@suse.de> --- 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
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