untangle the do_mremap() mess

[karo-tx-linux.git] / arch / s390 / kernel / compat_linux.c

diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c
index 0debcec23a39b543798ac523b00f772b895223f4..9c746c01a7a741d4fab9810e60e6bd2953aa7f35 100644 (file)
--- a/arch/s390/kernel/compat_linux.c
+++ b/arch/s390/kernel/compat_linux.c
@@ -683,38 +683,6 @@ struct mmap_arg_struct_emu31 {
        u32     offset;
 };
 
-/* common code for old and new mmaps */
-static inline long do_mmap2(
-       unsigned long addr, unsigned long len,
-       unsigned long prot, unsigned long flags,
-       unsigned long fd, unsigned long pgoff)
-{
-       struct file * file = NULL;
-       unsigned long error = -EBADF;
-
-       flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
-       if (!(flags & MAP_ANONYMOUS)) {
-               file = fget(fd);
-               if (!file)
-                       goto out;
-       }
-
-       down_write(&current->mm->mmap_sem);
-       error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
-       if (!IS_ERR((void *) error) && error + len >= 0x80000000ULL) {
-               /* Result is out of bounds.  */
-               do_munmap(current->mm, addr, len);
-               error = -ENOMEM;
-       }
-       up_write(&current->mm->mmap_sem);
-
-       if (file)
-               fput(file);
-out:    
-       return error;
-}
-
-
 asmlinkage unsigned long
 old32_mmap(struct mmap_arg_struct_emu31 __user *arg)
 {
@@ -728,7 +696,8 @@ old32_mmap(struct mmap_arg_struct_emu31 __user *arg)
        if (a.offset & ~PAGE_MASK)
                goto out;
 
-       error = do_mmap2(a.addr, a.len, a.prot, a.flags, a.fd, a.offset >> PAGE_SHIFT); 
+       error = sys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd,
+                              a.offset >> PAGE_SHIFT);
 out:
        return error;
 }
@@ -741,7 +710,7 @@ sys32_mmap2(struct mmap_arg_struct_emu31 __user *arg)
 
        if (copy_from_user(&a, arg, sizeof(a)))
                goto out;
-       error = do_mmap2(a.addr, a.len, a.prot, a.flags, a.fd, a.offset);
+       error = sys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd, a.offset);
 out:
        return error;
 }