mm/memcg: warning on !memcg after readahead page charged

[linux-2.6-microblaze.git] / mm / memory.c

diff --git a/mm/memory.c b/mm/memory.c
index 4a42a74..7d60876 100644 (file)
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -4707,9 +4707,9 @@ int __pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigned long address)
 }
 #endif /* __PAGETABLE_PMD_FOLDED */
 
-static int __follow_pte_pmd(struct mm_struct *mm, unsigned long address,
-                           struct mmu_notifier_range *range,
-                           pte_t **ptepp, pmd_t **pmdpp, spinlock_t **ptlp)
+int follow_pte(struct mm_struct *mm, unsigned long address,
+              struct mmu_notifier_range *range, pte_t **ptepp, pmd_t **pmdpp,
+              spinlock_t **ptlp)
 {
        pgd_t *pgd;
        p4d_t *p4d;
@@ -4774,32 +4774,6 @@ out:
        return -EINVAL;
 }
 
-static inline int follow_pte(struct mm_struct *mm, unsigned long address,
-                            pte_t **ptepp, spinlock_t **ptlp)
-{
-       int res;
-
-       /* (void) is needed to make gcc happy */
-       (void) __cond_lock(*ptlp,
-                          !(res = __follow_pte_pmd(mm, address, NULL,
-                                                   ptepp, NULL, ptlp)));
-       return res;
-}
-
-int follow_pte_pmd(struct mm_struct *mm, unsigned long address,
-                  struct mmu_notifier_range *range,
-                  pte_t **ptepp, pmd_t **pmdpp, spinlock_t **ptlp)
-{
-       int res;
-
-       /* (void) is needed to make gcc happy */
-       (void) __cond_lock(*ptlp,
-                          !(res = __follow_pte_pmd(mm, address, range,
-                                                   ptepp, pmdpp, ptlp)));
-       return res;
-}
-EXPORT_SYMBOL(follow_pte_pmd);
-
 /**
  * follow_pfn - look up PFN at a user virtual address
  * @vma: memory mapping
@@ -4820,7 +4794,7 @@ int follow_pfn(struct vm_area_struct *vma, unsigned long address,
        if (!(vma->vm_flags & (VM_IO | VM_PFNMAP)))
                return ret;
 
-       ret = follow_pte(vma->vm_mm, address, &ptep, &ptl);
+       ret = follow_pte(vma->vm_mm, address, NULL, &ptep, NULL, &ptl);
        if (ret)
                return ret;
        *pfn = pte_pfn(*ptep);
@@ -4841,7 +4815,7 @@ int follow_phys(struct vm_area_struct *vma,
        if (!(vma->vm_flags & (VM_IO | VM_PFNMAP)))
                goto out;
 
-       if (follow_pte(vma->vm_mm, address, &ptep, &ptl))
+       if (follow_pte(vma->vm_mm, address, NULL, &ptep, NULL, &ptl))
                goto out;
        pte = *ptep;