mm/shmem.c: remove an ifdef

Create a CONFIG_MMU=y stub for ramfs_nommu_expand_for_mapping() in the
usual fashion.

Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Wolfram Sang <wsa@the-dreams.de>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/include/linux/ramfs.h b/include/linux/ramfs.h
index 5bf5500db83de4bfec412a2dd47bad2742c8737a..69e37c2d1ea556fb990f5d1c8cebd9fee39f8ca7 100644 (file)
--- a/include/linux/ramfs.h
+++ b/include/linux/ramfs.h
@@ -6,7 +6,13 @@ struct inode *ramfs_get_inode(struct super_block *sb, const struct inode *dir,
 extern struct dentry *ramfs_mount(struct file_system_type *fs_type,
         int flags, const char *dev_name, void *data);
 
-#ifndef CONFIG_MMU
+#ifdef CONFIG_MMU
+static inline int
+ramfs_nommu_expand_for_mapping(struct inode *inode, size_t newsize)
+{
+       return 0;
+}
+#else
 extern int ramfs_nommu_expand_for_mapping(struct inode *inode, size_t newsize);
 extern unsigned long ramfs_nommu_get_unmapped_area(struct file *file,
                                                   unsigned long addr,

diff --git a/mm/shmem.c b/mm/shmem.c
index 1c44af71fcf5044be40d2e22b19dd66726e3f8be..39b2a0b86fe83854d279397c13c84b32b20fe8f0 100644 (file)
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -25,6 +25,7 @@
 #include <linux/init.h>
 #include <linux/vfs.h>
 #include <linux/mount.h>
+#include <linux/ramfs.h>
 #include <linux/pagemap.h>
 #include <linux/file.h>
 #include <linux/mm.h>
@@ -2830,8 +2831,6 @@ out4:
  * effectively equivalent, but much lighter weight.
  */
 
-#include <linux/ramfs.h>
-
 static struct file_system_type shmem_fs_type = {
        .name           = "tmpfs",
        .mount          = ramfs_mount,
@@ -2931,11 +2930,9 @@ struct file *shmem_file_setup(const char *name, loff_t size, unsigned long flags
        d_instantiate(path.dentry, inode);
        inode->i_size = size;
        clear_nlink(inode);     /* It is unlinked */
-#ifndef CONFIG_MMU
        res = ERR_PTR(ramfs_nommu_expand_for_mapping(inode, size));
        if (IS_ERR(res))
                goto put_dentry;
-#endif
 
        res = alloc_file(&path, FMODE_WRITE | FMODE_READ,
                  &shmem_file_operations);