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udf: kill useless file header comments for vfs method implementations
There's not need to document vfs method invocation rules, we have Documentation/filesystems/vfs.txt and Documentation/filesystems/Locking for that. Also a lot of these comments where either plain wrong or horrible out of date. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Christoph Hellwig
Jan Kara
parent
f1f73ba8e9
commit
b1e321266d
26
fs/udf/dir.c
26
fs/udf/dir.c
@ -188,32 +188,6 @@ static int do_udf_readdir(struct inode *dir, struct file *filp,
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return 0;
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}
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/*
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* udf_readdir
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*
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* PURPOSE
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* Read a directory entry.
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*
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* DESCRIPTION
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* Optional - sys_getdents() will return -ENOTDIR if this routine is not
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* available.
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*
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* Refer to sys_getdents() in fs/readdir.c
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* sys_getdents() -> .
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*
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* PRE-CONDITIONS
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* filp Pointer to directory file.
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* buf Pointer to directory entry buffer.
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* filldir Pointer to filldir function.
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*
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* POST-CONDITIONS
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* <return> >=0 on success.
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*
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* HISTORY
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* July 1, 1997 - Andrew E. Mileski
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* Written, tested, and released.
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*/
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static int udf_readdir(struct file *filp, void *dirent, filldir_t filldir)
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{
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struct inode *dir = filp->f_path.dentry->d_inode;
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@ -144,40 +144,6 @@ static ssize_t udf_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
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return retval;
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}
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/*
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* udf_ioctl
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*
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* PURPOSE
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* Issue an ioctl.
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*
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* DESCRIPTION
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* Optional - sys_ioctl() will return -ENOTTY if this routine is not
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* available, and the ioctl cannot be handled without filesystem help.
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*
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* sys_ioctl() handles these ioctls that apply only to regular files:
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* FIBMAP [requires udf_block_map()], FIGETBSZ, FIONREAD
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* These ioctls are also handled by sys_ioctl():
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* FIOCLEX, FIONCLEX, FIONBIO, FIOASYNC
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* All other ioctls are passed to the filesystem.
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*
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* Refer to sys_ioctl() in fs/ioctl.c
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* sys_ioctl() -> .
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*
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* PRE-CONDITIONS
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* inode Pointer to inode that ioctl was issued on.
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* filp Pointer to file that ioctl was issued on.
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* cmd The ioctl command.
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* arg The ioctl argument [can be interpreted as a
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* user-space pointer if desired].
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*
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* POST-CONDITIONS
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* <return> Success (>=0) or an error code (<=0) that
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* sys_ioctl() will return.
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*
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* HISTORY
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* July 1, 1997 - Andrew E. Mileski
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* Written, tested, and released.
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*/
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int udf_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
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unsigned long arg)
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{
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@ -225,18 +191,6 @@ int udf_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
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return result;
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}
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/*
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* udf_release_file
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*
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* PURPOSE
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* Called when all references to the file are closed
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*
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* DESCRIPTION
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* Discard prealloced blocks
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*
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* HISTORY
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*
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*/
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static int udf_release_file(struct inode *inode, struct file *filp)
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{
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if (filp->f_mode & FMODE_WRITE) {
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@ -66,22 +66,7 @@ static void udf_update_extents(struct inode *,
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struct extent_position *);
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static int udf_get_block(struct inode *, sector_t, struct buffer_head *, int);
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/*
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* udf_delete_inode
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*
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* PURPOSE
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* Clean-up before the specified inode is destroyed.
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*
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* DESCRIPTION
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* This routine is called when the kernel destroys an inode structure
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* ie. when iput() finds i_count == 0.
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*
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* HISTORY
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* July 1, 1997 - Andrew E. Mileski
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* Written, tested, and released.
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*
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* Called at the last iput() if i_nlink is zero.
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*/
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void udf_delete_inode(struct inode *inode)
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{
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truncate_inode_pages(&inode->i_data, 0);
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@ -1416,21 +1401,6 @@ static mode_t udf_convert_permissions(struct fileEntry *fe)
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return mode;
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}
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/*
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* udf_write_inode
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*
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* PURPOSE
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* Write out the specified inode.
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*
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* DESCRIPTION
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* This routine is called whenever an inode is synced.
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* Currently this routine is just a placeholder.
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*
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* HISTORY
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* July 1, 1997 - Andrew E. Mileski
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* Written, tested, and released.
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*/
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int udf_write_inode(struct inode *inode, int sync)
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{
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int ret;
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@ -251,39 +251,6 @@ static struct fileIdentDesc *udf_find_entry(struct inode *dir,
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return NULL;
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}
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/*
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* udf_lookup
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*
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* PURPOSE
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* Look-up the inode for a given name.
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*
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* DESCRIPTION
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* Required - lookup_dentry() will return -ENOTDIR if this routine is not
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* available for a directory. The filesystem is useless if this routine is
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* not available for at least the filesystem's root directory.
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*
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* This routine is passed an incomplete dentry - it must be completed by
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* calling d_add(dentry, inode). If the name does not exist, then the
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* specified inode must be set to null. An error should only be returned
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* when the lookup fails for a reason other than the name not existing.
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* Note that the directory inode semaphore is held during the call.
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*
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* Refer to lookup_dentry() in fs/namei.c
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* lookup_dentry() -> lookup() -> real_lookup() -> .
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*
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* PRE-CONDITIONS
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* dir Pointer to inode of parent directory.
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* dentry Pointer to dentry to complete.
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* nd Pointer to lookup nameidata
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*
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* POST-CONDITIONS
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* <return> Zero on success.
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*
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* HISTORY
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* July 1, 1997 - Andrew E. Mileski
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* Written, tested, and released.
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*/
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static struct dentry *udf_lookup(struct inode *dir, struct dentry *dentry,
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struct nameidata *nd)
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{
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@ -1670,22 +1670,6 @@ static void udf_sb_free_bitmap(struct udf_bitmap *bitmap)
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vfree(bitmap);
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}
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/*
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* udf_read_super
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*
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* PURPOSE
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* Complete the specified super block.
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*
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* PRE-CONDITIONS
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* sb Pointer to superblock to complete - never NULL.
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* sb->s_dev Device to read suberblock from.
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* options Pointer to mount options.
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* silent Silent flag.
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*
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* HISTORY
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* July 1, 1997 - Andrew E. Mileski
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* Written, tested, and released.
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*/
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static int udf_fill_super(struct super_block *sb, void *options, int silent)
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{
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int i;
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@ -1913,19 +1897,6 @@ void udf_warning(struct super_block *sb, const char *function,
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sb->s_id, function, error_buf);
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}
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/*
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* udf_put_super
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*
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* PURPOSE
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* Prepare for destruction of the superblock.
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*
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* DESCRIPTION
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* Called before the filesystem is unmounted.
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*
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* HISTORY
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* July 1, 1997 - Andrew E. Mileski
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* Written, tested, and released.
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*/
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static void udf_put_super(struct super_block *sb)
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{
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int i;
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@ -1961,19 +1932,6 @@ static void udf_put_super(struct super_block *sb)
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sb->s_fs_info = NULL;
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}
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/*
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* udf_stat_fs
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*
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* PURPOSE
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* Return info about the filesystem.
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*
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* DESCRIPTION
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* Called by sys_statfs()
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*
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* HISTORY
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* July 1, 1997 - Andrew E. Mileski
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* Written, tested, and released.
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*/
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static int udf_statfs(struct dentry *dentry, struct kstatfs *buf)
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{
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struct super_block *sb = dentry->d_sb;
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