struct inode * ifind (struct super_block * sb, struct hlist_head * head, int (*test) struct inode *, void *, void * data);
ifind searches for the inode specified by data in the inode cache. This is a generalized version of ifind_fast for file systems where the inode number is not sufficient for unique identification of an inode.
If the inode is in the cache, the inode is returned with an incremented reference count.
Otherwise NULL is returned.
Note, test is called with the inode_lock held, so can't sleep.