centos man page for deactivate_locked_super

DEACTIVATE_LOCKED_SU(9) 					   The Linux VFS					   DEACTIVATE_LOCKED_SU(9)

NAME
       deactivate_locked_super - drop an active reference to superblock

SYNOPSIS
       void deactivate_locked_super(struct super_block * s);

ARGUMENTS
       s
	   superblock to deactivate

DESCRIPTION
       Drops an active reference to superblock, converting it into a temprory one if there is no other active references left. In that case we
       tell fs driver to shut it down and drop the temporary reference we had just acquired.

       Caller holds exclusive lock on superblock; that lock is released.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						   DEACTIVATE_LOCKED_SU(9)