IUNIQUE(9) The Linux VFS IUNIQUE(9)NAMEiunique - get a unique inode number
SYNOPSIS
ino_t iunique(struct super_block * sb, ino_t max_reserved);
ARGUMENTS
sb
superblock
max_reserved
highest reserved inode number
DESCRIPTION
Obtain an inode number that is unique on the system for a given
superblock. This is used by file systems that have no natural permanent
inode numbering system. An inode number is returned that is higher than
the reserved limit but unique.
BUGS
With a large number of inodes live on the file system this function
currently becomes quite slow.
COPYRIGHTKernel Hackers Manual 2.6. November 2013 IUNIQUE(9)