fs: introduce f_op->mmap_capabilities for nommu mmap support

[firefly-linux-kernel-4.4.55.git] / fs / configfs / inode.c

diff --git a/fs/configfs/inode.c b/fs/configfs/inode.c
index 5946ad98053fa0f2133f5baf51aa9951005513a8..0ad6b4d6de00125b0222c81a33de720271fc504b 100644 (file)
--- a/fs/configfs/inode.c
+++ b/fs/configfs/inode.c
@@ -50,12 +50,6 @@ static const struct address_space_operations configfs_aops = {
        .write_end      = simple_write_end,
 };
 
-static struct backing_dev_info configfs_backing_dev_info = {
-       .name           = "configfs",
-       .ra_pages       = 0,    /* No readahead */
-       .capabilities   = BDI_CAP_NO_ACCT_AND_WRITEBACK,
-};
-
 static const struct inode_operations configfs_inode_operations ={
        .setattr        = configfs_setattr,
 };
@@ -137,7 +131,7 @@ struct inode *configfs_new_inode(umode_t mode, struct configfs_dirent *sd,
        if (inode) {
                inode->i_ino = get_next_ino();
                inode->i_mapping->a_ops = &configfs_aops;
-               inode->i_mapping->backing_dev_info = &configfs_backing_dev_info;
+               inode->i_mapping->backing_dev_info = &noop_backing_dev_info;
                inode->i_op = &configfs_inode_operations;
 
                if (sd->s_iattr) {
@@ -283,13 +277,3 @@ void configfs_hash_and_remove(struct dentry * dir, const char * name)
        }
        mutex_unlock(&dir->d_inode->i_mutex);
 }
-
-int __init configfs_inode_init(void)
-{
-       return bdi_init(&configfs_backing_dev_info);
-}
-
-void configfs_inode_exit(void)
-{
-       bdi_destroy(&configfs_backing_dev_info);
-}