15 static inline void dirty_indirect(struct buffer_head *bh, struct inode *inode)  in dirty_indirect()  argument
17 	mark_buffer_dirty_inode(bh, inode);  in dirty_indirect()
18 	if (IS_SYNC(inode))  in dirty_indirect()
22 static int block_to_path(struct inode *inode, long block, int offsets[DEPTH])  in block_to_path()  argument
24 	struct super_block *sb = inode->i_sb;  in block_to_path()
87 static Indirect *get_branch(struct inode *inode,  in get_branch()  argument
93 	struct super_block *sb = inode->i_sb;  in get_branch()
98 	add_chain(chain, NULL, SYSV_I(inode)->i_data + *offsets);  in get_branch()
124 static int alloc_branch(struct inode *inode,  in alloc_branch()  argument
129 	int blocksize = inode->i_sb->s_blocksize;  in alloc_branch()
133 	branch[0].key = sysv_new_block(inode->i_sb);  in alloc_branch()
138 		branch[n].key = sysv_new_block(inode->i_sb);  in alloc_branch()
145 		parent = block_to_cpu(SYSV_SB(inode->i_sb), branch[n-1].key);  in alloc_branch()
146 		bh = sb_getblk(inode->i_sb, parent);  in alloc_branch()
154 		dirty_indirect(bh, inode);  in alloc_branch()
163 		sysv_free_block(inode->i_sb, branch[i].key);  in alloc_branch()
167 static inline int splice_branch(struct inode *inode,  in splice_branch()  argument
181 	inode->i_ctime = CURRENT_TIME_SEC;  in splice_branch()
185 		dirty_indirect(where->bh, inode);  in splice_branch()
187 	if (IS_SYNC(inode))  in splice_branch()
188 		sysv_sync_inode(inode);  in splice_branch()
190 		mark_inode_dirty(inode);  in splice_branch()
198 		sysv_free_block(inode->i_sb, where[i].key);  in splice_branch()
202 static int get_block(struct inode *inode, sector_t iblock, struct buffer_head *bh_result, int creat…  in get_block()  argument
207 	struct super_block *sb = inode->i_sb;  in get_block()
210 	int depth = block_to_path(inode, iblock, offsets);  in get_block()
217 	partial = get_branch(inode, depth, offsets, chain, &err);  in get_block()
250 	err = alloc_branch(inode, left, offsets+(partial-chain), partial);  in get_block()
254 	if (splice_branch(inode, chain, partial, left) < 0)  in get_block()
276 static Indirect *find_shared(struct inode *inode,  in find_shared()  argument
290 	partial = get_branch(inode, k, offsets, chain, &err);  in find_shared()
325 static inline void free_data(struct inode *inode, sysv_zone_t *p, sysv_zone_t *q)  in free_data()  argument
331 			sysv_free_block(inode->i_sb, nr);  in free_data()
332 			mark_inode_dirty(inode);  in free_data()
337 static void free_branches(struct inode *inode, sysv_zone_t *p, sysv_zone_t *q, int depth)  in free_branches()  argument
340 	struct super_block *sb = inode->i_sb;  in free_branches()
353 			free_branches(inode, (sysv_zone_t*)bh->b_data,  in free_branches()
357 			mark_inode_dirty(inode);  in free_branches()
360 		free_data(inode, p, q);  in free_branches()
363 void sysv_truncate (struct inode * inode)  in sysv_truncate()  argument
365 	sysv_zone_t *i_data = SYSV_I(inode)->i_data;  in sysv_truncate()
374 	if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||  in sysv_truncate()
375 	    S_ISLNK(inode->i_mode)))  in sysv_truncate()
378 	blocksize = inode->i_sb->s_blocksize;  in sysv_truncate()
379 	iblock = (inode->i_size + blocksize-1)  in sysv_truncate()
380 					>> inode->i_sb->s_blocksize_bits;  in sysv_truncate()
382 	block_truncate_page(inode->i_mapping, inode->i_size, get_block);  in sysv_truncate()
384 	n = block_to_path(inode, iblock, offsets);  in sysv_truncate()
389 		free_data(inode, i_data+offsets[0], i_data + DIRECT);  in sysv_truncate()
393 	partial = find_shared(inode, n, offsets, chain, &nr);  in sysv_truncate()
397 			mark_inode_dirty(inode);  in sysv_truncate()
399 			dirty_indirect(partial->bh, inode);  in sysv_truncate()
400 		free_branches(inode, &nr, &nr+1, (chain+n-1) - partial);  in sysv_truncate()
404 		free_branches(inode, partial->p + 1, block_end(partial->bh),  in sysv_truncate()
406 		dirty_indirect(partial->bh, inode);  in sysv_truncate()
416 			mark_inode_dirty(inode);  in sysv_truncate()
417 			free_branches(inode, &nr, &nr+1, n);  in sysv_truncate()
421 	inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC;  in sysv_truncate()
422 	if (IS_SYNC(inode))  in sysv_truncate()
423 		sysv_sync_inode (inode);  in sysv_truncate()
425 		mark_inode_dirty(inode);  in sysv_truncate()
469 	struct inode *inode = mapping->host;  in sysv_write_failed()  local
471 	if (to > inode->i_size) {  in sysv_write_failed()
472 		truncate_pagecache(inode, inode->i_size);  in sysv_write_failed()
473 		sysv_truncate(inode);  in sysv_write_failed()