1 files changed, 20 insertions, 16 deletions

diff --git a/arch/sparc64/kernel/sys_sparc.c b/arch/sparc64/kernel/sys_sparc.c
index 054d0abdb7ee..bf5f14ee73de 100644
--- a/arch/sparc64/kernel/sys_sparc.c
+++ b/arch/sparc64/kernel/sys_sparc.c
@@ -548,6 +548,26 @@ asmlinkage long sparc64_personality(unsigned long personality)
         return ret;
 }
 
+int sparc64_mmap_check(unsigned long addr, unsigned long len,
+                unsigned long flags)
+{
+        if (test_thread_flag(TIF_32BIT)) {
+                if (len >= STACK_TOP32)
+                        return -EINVAL;
+
+                if ((flags & MAP_FIXED) && addr > STACK_TOP32 - len)
+                        return -EINVAL;
+        } else {
+                if (len >= VA_EXCLUDE_START)
+                        return -EINVAL;
+
+                if ((flags & MAP_FIXED) && invalid_64bit_range(addr, len))
+                        return -EINVAL;
+        }
+
+        return 0;
+}
+
 /* Linux version of mmap */
 asmlinkage unsigned long sys_mmap(unsigned long addr, unsigned long len,
         unsigned long prot, unsigned long flags, unsigned long fd,
@@ -563,27 +583,11 @@ asmlinkage unsigned long sys_mmap(unsigned long addr, unsigned long len,
         }
         flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
         len = PAGE_ALIGN(len);
-        retval = -EINVAL;
-
-        if (test_thread_flag(TIF_32BIT)) {
-                if (len >= STACK_TOP32)
-                        goto out_putf;
-
-                if ((flags & MAP_FIXED) && addr > STACK_TOP32 - len)
-                        goto out_putf;
-        } else {
-                if (len >= VA_EXCLUDE_START)
-                        goto out_putf;
-
-                if ((flags & MAP_FIXED) && invalid_64bit_range(addr, len))
-                        goto out_putf;
-        }
 
         down_write(&current->mm->mmap_sem);
         retval = do_mmap(file, addr, len, prot, flags, off);
         up_write(&current->mm->mmap_sem);
 
-out_putf:
         if (file)
                 fput(file);
 out: