51  * FUNCTION:	create a regular file in the parent directory <dip>
54  * PARAMETER:	dip	- parent directory vnode
67 	struct inode *ip = NULL;	/* child directory inode */  in jfs_create()
69 	struct component_name dname;	/* child directory name */  in jfs_create()
81 	 * search parent directory for entry/freespace  in jfs_create()
82 	 * (dtSearch() returns parent directory page pinned)  in jfs_create()
90 	 * begin the transaction before we search the directory.  in jfs_create()
133 	 * create entry in parent directory for child directory  in jfs_create()
134 	 * (dtInsert() releases parent directory page)  in jfs_create()
183  * FUNCTION:	create a child directory in the parent directory <dip>
186  * PARAMETER:	dip	- parent directory vnode
187  *		dentry	- dentry of child directory
193  * EACCES: user needs search+write permission on the parent directory
200 	struct inode *ip = NULL;	/* child directory inode */  in jfs_mkdir()
202 	struct component_name dname;	/* child directory name */  in jfs_mkdir()
214 	 * search parent directory for entry/freespace  in jfs_mkdir()
215 	 * (dtSearch() returns parent directory page pinned)  in jfs_mkdir()
223 	 * begin the transaction before we search the directory.  in jfs_mkdir()
261 	 * initialize the child directory in-line in inode  in jfs_mkdir()
266 	 * create entry in parent directory for child directory  in jfs_mkdir()
267 	 * (dtInsert() releases parent directory page)  in jfs_mkdir()
285 	/* update parent directory inode */  in jfs_mkdir()
286 	inc_nlink(dip);		/* for '..' from child directory */  in jfs_mkdir()
317  * FUNCTION:	remove a link to child directory
320  *		dentry	- child directory dentry
327  * if other threads have the directory open when the last link
329  * rmdir() returns and no new entries may be created in the directory,
330  * but the directory is not removed until the last reference to
331  * the directory is released (cf.unlink() of regular file).
353 	/* directory must be empty to be removed */  in jfs_rmdir()
376 	 * delete the entry of target directory from parent directory  in jfs_rmdir()
390 	/* update parent directory's link count corresponding  in jfs_rmdir()
391 	 * to ".." entry of the target directory deleted  in jfs_rmdir()
413 	/* mark the target directory as deleted */  in jfs_rmdir()
425 	 * Truncating the directory index table is not guaranteed.  It  in jfs_rmdir()
447  *		from parent directory <dvp>
449  * PARAMETER:	dip	- inode of parent directory
499 	 * delete the entry of target file from parent directory  in jfs_unlink()
582 	 * Truncating the directory index table is not guaranteed.  It  in jfs_unlink()
602  * FUNCTION:	for non-directory, called by jfs_remove(),
603  *		truncate a regular file, directory or symbolic
682  * FUNCTION:	for non-directory, called by iClose(),
766  *		in the parent directory <dvp>
769  *		dvp	- parent directory of new link
777  * path in the directory hierarchy);
778  * EPERM: the target object is a directory, and either the caller
814 	 * scan parent directory for entry/freespace  in jfs_link()
823 	 * create entry for new link in parent directory  in jfs_link()
864  *			in directory <dip>
866  * PARAMETER:	dip	- parent directory vnode
906 	 * search parent directory for entry/freespace  in jfs_symlink()
907 	 * (dtSearch() returns parent directory page pinned)  in jfs_symlink()
1015 	 * create entry for symbolic link in parent directory  in jfs_symlink()
1035 	 * commit update of parent directory and link object  in jfs_symlink()
1066  * FUNCTION:	rename a file or directory
1172 		 * Change existing directory entry to new inode number  in jfs_rename()
1214 		 * Add new directory entry  in jfs_rename()
1235 	 * Remove old directory entry  in jfs_rename()
1250 			 * Change inode number of parent for moved directory  in jfs_rename()
1328 	 * Truncating the directory index table is not guaranteed.  It  in jfs_rename()
1585 	 * Note, rename() to existing directory entry will have ->d_inode,  in jfs_ci_revalidate()