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-rw-r--r--fs/configfs/file.c85
1 files changed, 6 insertions, 79 deletions
diff --git a/fs/configfs/file.c b/fs/configfs/file.c
index e557b8806b58..2199690b4080 100644
--- a/fs/configfs/file.c
+++ b/fs/configfs/file.c
@@ -77,25 +77,6 @@ static int fill_read_buffer(struct file *file, struct configfs_buffer *buffer)
return 0;
}
-/**
- * configfs_read_file - read an attribute.
- * @file: file pointer.
- * @buf: buffer to fill.
- * @count: number of bytes to read.
- * @ppos: starting offset in file.
- *
- * Userspace wants to read an attribute file. The attribute descriptor
- * is in the file's ->d_fsdata. The target item is in the directory's
- * ->d_fsdata.
- *
- * We call fill_read_buffer() to allocate and fill the buffer from the
- * item's show() method exactly once (if the read is happening from
- * the beginning of the file). That should fill the entire buffer with
- * all the data the item has to offer for that attribute.
- * We then call flush_read_buffer() to copy the buffer to userspace
- * in the increments specified.
- */
-
static ssize_t
configfs_read_file(struct file *file, char __user *buf, size_t count, loff_t *ppos)
{
@@ -117,26 +98,6 @@ out:
return retval;
}
-/**
- * configfs_read_bin_file - read a binary attribute.
- * @file: file pointer.
- * @buf: buffer to fill.
- * @count: number of bytes to read.
- * @ppos: starting offset in file.
- *
- * Userspace wants to read a binary attribute file. The attribute
- * descriptor is in the file's ->d_fsdata. The target item is in the
- * directory's ->d_fsdata.
- *
- * We check whether we need to refill the buffer. If so we will
- * call the attributes' attr->read() twice. The first time we
- * will pass a NULL as a buffer pointer, which the attributes' method
- * will use to return the size of the buffer required. If no error
- * occurs we will allocate the buffer using vmalloc and call
- * attr->read() again passing that buffer as an argument.
- * Then we just copy to user-space using simple_read_from_buffer.
- */
-
static ssize_t
configfs_read_bin_file(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
@@ -207,17 +168,6 @@ out:
return retval;
}
-
-/**
- * fill_write_buffer - copy buffer from userspace.
- * @buffer: data buffer for file.
- * @buf: data from user.
- * @count: number of bytes in @userbuf.
- *
- * Allocate @buffer->page if it hasn't been already, then
- * copy the user-supplied buffer into it.
- */
-
static int
fill_write_buffer(struct configfs_buffer * buffer, const char __user * buf, size_t count)
{
@@ -252,23 +202,13 @@ flush_write_buffer(struct file *file, struct configfs_buffer *buffer, size_t cou
}
-/**
- * configfs_write_file - write an attribute.
- * @file: file pointer
- * @buf: data to write
- * @count: number of bytes
- * @ppos: starting offset
- *
- * Similar to configfs_read_file(), though working in the opposite direction.
- * We allocate and fill the data from the user in fill_write_buffer(),
- * then push it to the config_item in flush_write_buffer().
- * There is no easy way for us to know if userspace is only doing a partial
- * write, so we don't support them. We expect the entire buffer to come
- * on the first write.
- * Hint: if you're writing a value, first read the file, modify only
- * the value you're changing, then write entire buffer back.
+/*
+ * There is no easy way for us to know if userspace is only doing a partial
+ * write, so we don't support them. We expect the entire buffer to come on the
+ * first write.
+ * Hint: if you're writing a value, first read the file, modify only the value
+ * you're changing, then write entire buffer back.
*/
-
static ssize_t
configfs_write_file(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
{
@@ -285,19 +225,6 @@ configfs_write_file(struct file *file, const char __user *buf, size_t count, lof
return len;
}
-/**
- * configfs_write_bin_file - write a binary attribute.
- * @file: file pointer
- * @buf: data to write
- * @count: number of bytes
- * @ppos: starting offset
- *
- * Writing to a binary attribute file is similar to a normal read.
- * We buffer the consecutive writes (binary attribute files do not
- * support lseek) in a continuously growing buffer, but we don't
- * commit until the close of the file.
- */
-
static ssize_t
configfs_write_bin_file(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)