configfs: remove old API

Remove the old show_attribute and store_attribute methods and update
the documentation.  Also replace the two C samples with a single new
one in the proper samples directory where people expect to find it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

1 files changed, 3 insertions, 12 deletions

diff --git a/fs/configfs/file.c b/fs/configfs/file.c
index 106ca589e90a..d39099ea7df7 100644
--- a/fs/configfs/file.c
+++ b/fs/configfs/file.c
@@ -65,7 +65,6 @@ static int fill_read_buffer(struct dentry * dentry, struct configfs_buffer * buf
 {
         struct configfs_attribute * attr = to_attr(dentry);
         struct config_item * item = to_item(dentry->d_parent);
-        struct configfs_item_operations * ops = buffer->ops;
         int ret = 0;
         ssize_t count;
 
@@ -74,10 +73,7 @@ static int fill_read_buffer(struct dentry * dentry, struct configfs_buffer * buf
         if (!buffer->page)
                 return -ENOMEM;
 
-        if (ops->show_attribute)
-                count = ops->show_attribute(item, attr, buffer->page);
-        else
-                count = attr->show(item, buffer->page);
+        count = attr->show(item, buffer->page);
 
         buffer->needs_read_fill = 0;
         BUG_ON(count > (ssize_t)SIMPLE_ATTR_SIZE);
@@ -175,10 +171,7 @@ flush_write_buffer(struct dentry * dentry, struct configfs_buffer * buffer, size
 {
         struct configfs_attribute * attr = to_attr(dentry);
         struct config_item * item = to_item(dentry->d_parent);
-        struct configfs_item_operations * ops = buffer->ops;
 
-        if (ops->store_attribute)
-                return ops->store_attribute(item, attr, buffer->page, count);
         return attr->store(item, buffer->page, count);
 }
 
@@ -243,8 +236,7 @@ static int check_perm(struct inode * inode, struct file * file)
          * and we must have a store method.
          */
         if (file->f_mode & FMODE_WRITE) {
-                if (!(inode->i_mode & S_IWUGO) ||
-                    (!ops->store_attribute && !attr->store))
+                if (!(inode->i_mode & S_IWUGO) || !attr->store)
                         goto Eaccess;
 
         }
@@ -254,8 +246,7 @@ static int check_perm(struct inode * inode, struct file * file)
          * must be a show method for it.
          */
         if (file->f_mode & FMODE_READ) {
-                if (!(inode->i_mode & S_IRUGO) ||
-                    (!ops->show_attribute && !attr->show))
+                if (!(inode->i_mode & S_IRUGO) || !attr->show)
                         goto Eaccess;
         }