29 static inline Indirect *get_branch(struct inode *inode,  in get_branch()  argument
35 	struct super_block *sb = inode->i_sb;  in get_branch()
41 	add_chain (chain, NULL, i_data(inode) + *offsets);  in get_branch()
69 static int alloc_branch(struct inode *inode,  in alloc_branch()  argument
76 	int parent = minix_new_block(inode);  in alloc_branch()
82 		int nr = minix_new_block(inode);  in alloc_branch()
86 		bh = sb_getblk(inode->i_sb, parent);  in alloc_branch()
94 		mark_buffer_dirty_inode(bh, inode);  in alloc_branch()
104 		minix_free_block(inode, block_to_cpu(branch[i].key));  in alloc_branch()
108 static inline int splice_branch(struct inode *inode,  in splice_branch()  argument
127 	inode->i_ctime = CURRENT_TIME_SEC;  in splice_branch()
131 		mark_buffer_dirty_inode(where->bh, inode);  in splice_branch()
133 	mark_inode_dirty(inode);  in splice_branch()
141 		minix_free_block(inode, block_to_cpu(where[i].key));  in splice_branch()
145 static inline int get_block(struct inode * inode, sector_t block,  in get_block()  argument
153 	int depth = block_to_path(inode, block, offsets);  in get_block()
159 	partial = get_branch(inode, depth, offsets, chain, &err);  in get_block()
164 		map_bh(bh, inode->i_sb, block_to_cpu(chain[depth-1].key));  in get_block()
190 	err = alloc_branch(inode, left, offsets+(partial-chain), partial);  in get_block()
194 	if (splice_branch(inode, chain, partial, left) < 0)  in get_block()
216 static Indirect *find_shared(struct inode *inode,  in find_shared()  argument
228 	partial = get_branch(inode, k, offsets, chain, &err);  in find_shared()
256 static inline void free_data(struct inode *inode, block_t *p, block_t *q)  in free_data()  argument
264 			minix_free_block(inode, nr);  in free_data()
269 static void free_branches(struct inode *inode, block_t *p, block_t *q, int depth)  in free_branches()  argument
280 			bh = sb_bread(inode->i_sb, nr);  in free_branches()
283 			free_branches(inode, (block_t*)bh->b_data,  in free_branches()
286 			minix_free_block(inode, nr);  in free_branches()
287 			mark_inode_dirty(inode);  in free_branches()
290 		free_data(inode, p, q);  in free_branches()
293 static inline void truncate (struct inode * inode)  in truncate()  argument
295 	struct super_block *sb = inode->i_sb;  in truncate()
296 	block_t *idata = i_data(inode);  in truncate()
305 	iblock = (inode->i_size + sb->s_blocksize -1) >> sb->s_blocksize_bits;  in truncate()
306 	block_truncate_page(inode->i_mapping, inode->i_size, get_block);  in truncate()
308 	n = block_to_path(inode, iblock, offsets);  in truncate()
313 		free_data(inode, idata+offsets[0], idata + DIRECT);  in truncate()
319 	partial = find_shared(inode, n, offsets, chain, &nr);  in truncate()
322 			mark_inode_dirty(inode);  in truncate()
324 			mark_buffer_dirty_inode(partial->bh, inode);  in truncate()
325 		free_branches(inode, &nr, &nr+1, (chain+n-1) - partial);  in truncate()
329 		free_branches(inode, partial->p + 1, block_end(partial->bh),  in truncate()
331 		mark_buffer_dirty_inode(partial->bh, inode);  in truncate()
341 			mark_inode_dirty(inode);  in truncate()
342 			free_branches(inode, &nr, &nr+1, first_whole+1);  in truncate()
346 	inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC;  in truncate()
347 	mark_inode_dirty(inode);  in truncate()