VM: add "vm_munmap()" helper function

[linux-flexiantxendom0-3.2.10.git] / mm / mmap.c

diff --git a/mm/mmap.c b/mm/mmap.c
index df51891..4af45f5 100644 (file)
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -2107,21 +2107,24 @@ int do_munmap(struct mm_struct *mm, unsigned long start, size_t len)
 
        return 0;
 }
-
 EXPORT_SYMBOL(do_munmap);
 
-SYSCALL_DEFINE2(munmap, unsigned long, addr, size_t, len)
+int vm_munmap(struct mm_struct *mm, unsigned long start, size_t len)
 {
        int ret;
-       struct mm_struct *mm = current->mm;
-
-       profile_munmap(addr);
 
        down_write(&mm->mmap_sem);
-       ret = do_munmap(mm, addr, len);
+       ret = do_munmap(mm, start, len);
        up_write(&mm->mmap_sem);
        return ret;
 }
+EXPORT_SYMBOL(vm_munmap);
+
+SYSCALL_DEFINE2(munmap, unsigned long, addr, size_t, len)
+{
+       profile_munmap(addr);
+       return vm_munmap(current->mm, addr, len);
+}
 
 static inline void verify_mm_writelocked(struct mm_struct *mm)
 {