nommu: don't need get_unmapped_area() for NOMMU

get_unmapped_area() is unnecessary for NOMMU as no-one calls it.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Greg Ungerer <gerg@snapgear.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2 files changed, 1 insertions, 22 deletions

diff --git a/mm/nommu.c b/mm/nommu.c
index d6dd656264a2..32be0cf51ba6 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -1761,27 +1761,6 @@ void unmap_mapping_range(struct address_space *mapping,
 EXPORT_SYMBOL(unmap_mapping_range);
 
 /*
- * ask for an unmapped area at which to create a mapping on a file
- */
-unsigned long get_unmapped_area(struct file *file, unsigned long addr,
-                                unsigned long len, unsigned long pgoff,
-                                unsigned long flags)
-{
-        unsigned long (*get_area)(struct file *, unsigned long, unsigned long,
-                                  unsigned long, unsigned long);
-
-        get_area = current->mm->get_unmapped_area;
-        if (file && file->f_op && file->f_op->get_unmapped_area)
-                get_area = file->f_op->get_unmapped_area;
-
-        if (!get_area)
-                return -ENOSYS;
-
-        return get_area(file, addr, len, pgoff, flags);
-}
-EXPORT_SYMBOL(get_unmapped_area);
-
-/*
  * Check that a process has enough memory to allocate a new virtual
  * mapping. 0 means there is enough memory for the allocation to
  * succeed and -ENOMEM implies there is not.
diff --git a/mm/util.c b/mm/util.c
index 7c35ad95f927..834db7be240f 100644
--- a/mm/util.c
+++ b/mm/util.c
@@ -220,7 +220,7 @@ char *strndup_user(const char __user *s, long n)
 }
 EXPORT_SYMBOL(strndup_user);
 
-#ifndef HAVE_ARCH_PICK_MMAP_LAYOUT
+#if defined(CONFIG_MMU) && !defined(HAVE_ARCH_PICK_MMAP_LAYOUT)
 void arch_pick_mmap_layout(struct mm_struct *mm)
 {
         mm->mmap_base = TASK_UNMAPPED_BASE;