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
199 	struct inode *ip = NULL;	/* child directory inode */  in jfs_mkdir()
201 	struct component_name dname;	/* child directory name */  in jfs_mkdir()
213 	 * search parent directory for entry/freespace  in jfs_mkdir()
214 	 * (dtSearch() returns parent directory page pinned)  in jfs_mkdir()
222 	 * begin the transaction before we search the directory.  in jfs_mkdir()
260 	 * initialize the child directory in-line in inode  in jfs_mkdir()
265 	 * create entry in parent directory for child directory  in jfs_mkdir()
266 	 * (dtInsert() releases parent directory page)  in jfs_mkdir()
284 	/* update parent directory inode */  in jfs_mkdir()
285 	inc_nlink(dip);		/* for '..' from child directory */  in jfs_mkdir()
316  * FUNCTION:	remove a link to child directory
319  *		dentry	- child directory dentry
326  * if other threads have the directory open when the last link
328  * rmdir() returns and no new entries may be created in the directory,
329  * but the directory is not removed until the last reference to
330  * the directory is released (cf.unlink() of regular file).
352 	/* directory must be empty to be removed */  in jfs_rmdir()
375 	 * delete the entry of target directory from parent directory  in jfs_rmdir()
389 	/* update parent directory's link count corresponding  in jfs_rmdir()
390 	 * to ".." entry of the target directory deleted  in jfs_rmdir()
412 	/* mark the target directory as deleted */  in jfs_rmdir()
424 	 * Truncating the directory index table is not guaranteed.  It  in jfs_rmdir()
446  *		from parent directory <dvp>
448  * PARAMETER:	dip	- inode of parent directory
498 	 * delete the entry of target file from parent directory  in jfs_unlink()
580 	 * Truncating the directory index table is not guaranteed.  It  in jfs_unlink()
600  * FUNCTION:	for non-directory, called by jfs_remove(),
601  *		truncate a regular file, directory or symbolic
680  * FUNCTION:	for non-directory, called by iClose(),
764  *		in the parent directory <dvp>
767  *		dvp	- parent directory of new link
775  * path in the directory hierarchy);
776  * EPERM: the target object is a directory, and either the caller
807 	 * scan parent directory for entry/freespace  in jfs_link()
816 	 * create entry for new link in parent directory  in jfs_link()
857  *			in directory <dip>
859  * PARAMETER:	dip	- parent directory vnode
899 	 * search parent directory for entry/freespace  in jfs_symlink()
900 	 * (dtSearch() returns parent directory page pinned)  in jfs_symlink()
1008 	 * create entry for symbolic link in parent directory  in jfs_symlink()
1028 	 * commit update of parent directory and link object  in jfs_symlink()
1059  * FUNCTION:	rename a file or directory
1165 		 * Change existing directory entry to new inode number  in jfs_rename()
1207 		 * Add new directory entry  in jfs_rename()
1228 	 * Remove old directory entry  in jfs_rename()
1243 			 * Change inode number of parent for moved directory  in jfs_rename()
1320 	 * Truncating the directory index table is not guaranteed.  It  in jfs_rename()
1575 	 * Note, rename() to existing directory entry will have ->d_inode,  in jfs_ci_revalidate()