Merge branch 'master' into for-next

Sync with Linus' tree to be able to apply fixes on top of newer things
in tree (efi-stub).

Signed-off-by: Jiri Kosina <jkosina@suse.cz>

1 files changed, 18 insertions, 6 deletions

diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index 9f8ef9b7674d..124fc43c7090 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -285,15 +285,27 @@ static int proc_reg_mmap(struct file *file, struct vm_area_struct *vma)
 	return rv;
 }
 
-static unsigned long proc_reg_get_unmapped_area(struct file *file, unsigned long orig_addr, unsigned long len, unsigned long pgoff, unsigned long flags)
+static unsigned long
+proc_reg_get_unmapped_area(struct file *file, unsigned long orig_addr,
+			   unsigned long len, unsigned long pgoff,
+			   unsigned long flags)
 {
 	struct proc_dir_entry *pde = PDE(file_inode(file));
-	int rv = -EIO;
-	unsigned long (*get_unmapped_area)(struct file *, unsigned long, unsigned long, unsigned long, unsigned long);
+	unsigned long rv = -EIO;
+
 	if (use_pde(pde)) {
-		get_unmapped_area = pde->proc_fops->get_unmapped_area;
-		if (get_unmapped_area)
-			rv = get_unmapped_area(file, orig_addr, len, pgoff, flags);
+		typeof(proc_reg_get_unmapped_area) *get_area;
+
+		get_area = pde->proc_fops->get_unmapped_area;
+#ifdef CONFIG_MMU
+		if (!get_area)
+			get_area = current->mm->get_unmapped_area;
+#endif
+
+		if (get_area)
+			rv = get_area(file, orig_addr, len, pgoff, flags);
+		else
+			rv = orig_addr;
 		unuse_pde(pde);
 	}
 	return rv;