5  *  Handling of indirect blocks' trees.
15 enum {DIRECT = 10, DEPTH = 4};	/* Have triple indirect */
64 } Indirect;  typedef
68 static inline void add_chain(Indirect *p, struct buffer_head *bh, sysv_zone_t *v)  in add_chain()
74 static inline int verify_chain(Indirect *from, Indirect *to)  in verify_chain()
89 static Indirect *get_branch(struct inode *inode,  in get_branch()
92 			    Indirect chain[],  in get_branch()
96 	Indirect *p = chain;  in get_branch()
129 			Indirect *branch)  in alloc_branch()
174 				Indirect chain[],  in splice_branch()
175 				Indirect *where,  in splice_branch()
189 	/* had we spliced it onto indirect block? */  in splice_branch()
212 	Indirect chain[DEPTH];  in get_block()
214 	Indirect *partial;  in get_block()
236 	/* Next simple case - plain lookup or failed read of indirect block */  in get_block()
248 	 * Indirect block might be removed by truncate while we were  in get_block()
282 static Indirect *find_shared(struct inode *inode,  in find_shared()
285 				Indirect chain[],  in find_shared()
288 	Indirect *partial, *p;  in find_shared()
373 	Indirect chain[DEPTH];  in sysv_truncate()
374 	Indirect *partial;  in sysv_truncate()
408 	/* Clear the ends of indirect blocks on the shared branch */  in sysv_truncate()