fs/nilfs2/dir.c

62 static inline unsigned int nilfs_chunk_size(struct inode *inode)
64 	return inode->i_sb->s_blocksize;
71 static unsigned int nilfs_last_byte(struct inode *inode, unsigned long page_nr)
73 	unsigned int last_byte = inode->i_size;
92 	struct inode *dir = mapping->host;
111 	struct inode *dir = folio->mapping->host;
165 		    "bad entry in directory #%lu: %s - offset=%lu, inode=%lu, rec_len=%zd, name_len=%d",
167 		    (unsigned long)le64_to_cpu(p->inode),
173 		    "entry in directory #%lu spans the page boundary offset=%lu, inode=%lu",
175 		    (unsigned long)le64_to_cpu(p->inode));
181 static void *nilfs_get_folio(struct inode *dir, unsigned long n,
215 	if (!de->inode)
253 static void nilfs_set_de_type(struct nilfs_dir_entry *de, struct inode *inode)
255 	umode_t mode = inode->i_mode;
263 	struct inode *inode = file_inode(file);
264 	struct super_block *sb = inode->i_sb;
267 	unsigned long npages = dir_pages(inode);
269 	if (pos > inode->i_size - NILFS_DIR_REC_LEN(1))
277 		kaddr = nilfs_get_folio(inode, n, &folio);
279 			nilfs_error(sb, "bad page in #%lu", inode->i_ino);
284 		limit = kaddr + nilfs_last_byte(inode, n) -
292 			if (de->inode) {
301 						le64_to_cpu(de->inode), t)) {
323 struct nilfs_dir_entry *nilfs_find_entry(struct inode *dir,
379 struct nilfs_dir_entry *nilfs_dotdot(struct inode *dir, struct folio **foliop)
388 ino_t nilfs_inode_by_name(struct inode *dir, const struct qstr *qstr)
396 		res = le64_to_cpu(de->inode);
402 void nilfs_set_link(struct inode *dir, struct nilfs_dir_entry *de,
403 		    struct folio *folio, struct inode *inode)
413 	de->inode = cpu_to_le64(inode->i_ino);
414 	nilfs_set_de_type(de, inode);
422 int nilfs_add_link(struct dentry *dentry, struct inode *inode)
424 	struct inode *dir = d_inode(dentry->d_parent);
458 				de->inode = 0;
472 			if (!de->inode && rec_len >= reclen)
490 	if (de->inode) {
500 	de->inode = cpu_to_le64(inode->i_ino);
501 	nilfs_set_de_type(de, inode);
521 	struct inode *inode = mapping->host;
527 	from = ((char *)dir - kaddr) & ~(nilfs_chunk_size(inode) - 1);
533 			nilfs_error(inode->i_sb,
548 	dir->inode = 0;
550 	inode_set_mtime_to_ts(inode, inode_set_ctime_current(inode));
558 int nilfs_make_empty(struct inode *inode, struct inode *parent)
560 	struct address_space *mapping = inode->i_mapping;
562 	unsigned int chunk_size = nilfs_chunk_size(inode);
581 	de->inode = cpu_to_le64(inode->i_ino);
582 	nilfs_set_de_type(de, inode);
587 	de->inode = cpu_to_le64(parent->i_ino);
589 	nilfs_set_de_type(de, inode);
600 int nilfs_empty_dir(struct inode *inode)
604 	unsigned long i, npages = dir_pages(inode);
609 		kaddr = nilfs_get_folio(inode, i, &folio);
614 		kaddr += nilfs_last_byte(inode, i) - NILFS_DIR_REC_LEN(1);
618 				nilfs_error(inode->i_sb,
623 			if (de->inode != 0) {
630 					if (de->inode !=
631 					    cpu_to_le64(inode->i_ino))