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configfs: drop pointless kerneldoc comments

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file.c has a bunch of kerneldoc comments for static functions that do not
document any API but just list what is done.  Drop them.

Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Christoph Hellwig 2021-05-25 10:28:54 +02:00
parent dd33f1f7aa
commit 44b9a000df
1 changed files with 6 additions and 79 deletions
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85
fs/configfs/file.c
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@ -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 @@ configfs_read_file(struct file *file, char __user *buf, size_t count, loff_t *pp
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 @@ configfs_read_bin_file(struct file *file, char __user *buf,
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)