502 	unsigned	seq, m_seq;  member
511 		unsigned seq;  member
626 			    struct path *path, unsigned seq)  in legitimize_path()  argument
639 	return !read_seqcount_retry(&path->dentry->d_seq, seq);  in legitimize_path()
647 		if (unlikely(!legitimize_path(nd, &last->link, last->seq))) {  in legitimize_links()
680 static int unlazy_walk(struct nameidata *nd, struct dentry *dentry, unsigned seq)  in unlazy_walk()  argument
706 		if (read_seqcount_retry(&parent->d_seq, nd->seq))  in unlazy_walk()
712 		if (read_seqcount_retry(&dentry->d_seq, seq))  in unlazy_walk()
747 static int unlazy_link(struct nameidata *nd, struct path *link, unsigned seq)  in unlazy_link()  argument
749 	if (unlikely(!legitimize_path(nd, link, seq))) {  in unlazy_link()
816 	unsigned seq;  in set_root_rcu()  local
819 		seq = read_seqcount_begin(&fs->seq);  in set_root_rcu()
822 	} while (read_seqcount_retry(&fs->seq, seq));  in set_root_rcu()
1025 			nd->seq = nd->root_seq;  in get_link()
1026 			if (unlikely(read_seqcount_retry(&d->d_seq, nd->seq)))  in get_link()
1306 			unsigned seq;  in follow_dotdot_rcu()  local
1309 			seq = read_seqcount_begin(&parent->d_seq);  in follow_dotdot_rcu()
1310 			if (unlikely(read_seqcount_retry(&old->d_seq, nd->seq)))  in follow_dotdot_rcu()
1313 			nd->seq = seq;  in follow_dotdot_rcu()
1322 			unsigned seq = read_seqcount_begin(&mountpoint->d_seq);  in follow_dotdot_rcu()  local
1331 			nd->seq = seq;  in follow_dotdot_rcu()
1344 		nd->seq = read_seqcount_begin(&nd->path.dentry->d_seq);  in follow_dotdot_rcu()
1544 		unsigned seq;  in lookup_fast()  local
1546 		dentry = __d_lookup_rcu(parent, &nd->last, &seq);  in lookup_fast()
1556 		if (read_seqcount_retry(&dentry->d_seq, seq))  in lookup_fast()
1566 		if (__read_seqcount_retry(&parent->d_seq, nd->seq))  in lookup_fast()
1569 		*seqp = seq;  in lookup_fast()
1589 		if (unlazy_walk(nd, dentry, seq))  in lookup_fast()
1667 		     struct inode *inode, unsigned seq)  in pick_link()  argument
1682 			if (unlikely(unlazy_link(nd, link, seq)))  in pick_link()
1696 	last->seq = seq;  in pick_link()
1708 				     struct inode *inode, unsigned seq)  in should_follow_link()  argument
1716 		if (read_seqcount_retry(&link->dentry->d_seq, seq))  in should_follow_link()
1719 	return pick_link(nd, link, inode, seq);  in should_follow_link()
1728 	unsigned seq;  in walk_component()  local
1741 	err = lookup_fast(nd, &path, &inode, &seq);  in walk_component()
1750 		seq = 0;	/* we are already out of RCU mode */  in walk_component()
1759 	err = should_follow_link(nd, &path, flags & WALK_GET, inode, seq);  in walk_component()
1764 	nd->seq = seq;  in walk_component()
2018 			nd->seq = __read_seqcount_begin(&nd->path.dentry->d_seq);  in path_init()
2019 			nd->root_seq = nd->seq;  in path_init()
2034 			nd->seq = nd->root_seq;  in path_init()
2043 			unsigned seq;  in path_init()  local
2048 				seq = read_seqcount_begin(&fs->seq);  in path_init()
2050 				nd->seq = __read_seqcount_begin(&nd->path.dentry->d_seq);  in path_init()
2051 			} while (read_seqcount_retry(&fs->seq, seq));  in path_init()
2076 			nd->seq = read_seqcount_begin(&nd->path.dentry->d_seq);  in path_init()
2088 	if (likely(!read_seqcount_retry(&nd->path.dentry->d_seq, nd->seq)))  in path_init()
3018 	unsigned seq;  in do_last()  local
3039 		error = lookup_fast(nd, &path, &inode, &seq);  in do_last()
3126 	seq = 0;	/* out of RCU mode, so the value doesn't matter */  in do_last()
3136 				   inode, seq);  in do_last()
3149 	nd->seq = seq;  in do_last()