Merge to Fedora kernel-2.6.17-1.2187_FC5 patched with stable patch-2.6.17.13-vs2...

[linux-2.6.git] / arch / sparc / kernel / sys_sparc.c

diff --git a/arch/sparc/kernel/sys_sparc.c b/arch/sparc/kernel/sys_sparc.c
index 8fa541c..5a220d6 100644 (file)
--- a/arch/sparc/kernel/sys_sparc.c
+++ b/arch/sparc/kernel/sys_sparc.c
@@ -220,6 +220,21 @@ out:
        return err;
 }
 
+int sparc_mmap_check(unsigned long addr, unsigned long len, unsigned long flags)
+{
+       if (ARCH_SUN4C_SUN4 &&
+           (len > 0x20000000 ||
+            ((flags & MAP_FIXED) &&
+             addr < 0xe0000000 && addr + len > 0x20000000)))
+               return -EINVAL;
+
+       /* See asm-sparc/uaccess.h */
+       if (len > TASK_SIZE - PAGE_SIZE || addr + len > TASK_SIZE - PAGE_SIZE)
+               return -EINVAL;
+
+       return 0;
+}
+
 /* Linux version of mmap */
 static unsigned long do_mmap2(unsigned long addr, unsigned long len,
        unsigned long prot, unsigned long flags, unsigned long fd,
@@ -234,25 +249,13 @@ static unsigned long do_mmap2(unsigned long addr, unsigned long len,
                        goto out;
        }
 
-       retval = -EINVAL;
        len = PAGE_ALIGN(len);
-       if (ARCH_SUN4C_SUN4 &&
-           (len > 0x20000000 ||
-            ((flags & MAP_FIXED) &&
-             addr < 0xe0000000 && addr + len > 0x20000000)))
-               goto out_putf;
-
-       /* See asm-sparc/uaccess.h */
-       if (len > TASK_SIZE - PAGE_SIZE || addr + len > TASK_SIZE - PAGE_SIZE)
-               goto out_putf;
-
        flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
 
        down_write(&current->mm->mmap_sem);
        retval = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
        up_write(&current->mm->mmap_sem);
 
-out_putf:
        if (file)
                fput(file);
 out: