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-rw-r--r--mm/memory.c13
1 files changed, 12 insertions, 1 deletions
diff --git a/mm/memory.c b/mm/memory.c
index 01bdf9dbbfac..861f7982dd54 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -3351,7 +3351,7 @@ int in_gate_area_no_task(unsigned long addr)
#endif /* __HAVE_ARCH_GATE_AREA */
-static int follow_pte(struct mm_struct *mm, unsigned long address,
+static int __follow_pte(struct mm_struct *mm, unsigned long address,
pte_t **ptepp, spinlock_t **ptlp)
{
pgd_t *pgd;
@@ -3388,6 +3388,17 @@ 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(mm, address, ptepp, ptlp)));
+ return res;
+}
+
/**
* follow_pfn - look up PFN at a user virtual address
* @vma: memory mapping