|VREF(9)||Kernel Developer's Manual||VREF(9)|
vref — increment
the use count for a vnode
Increment the v_usecount field of the vnode specified by vp.
Each vnode maintains a reference count of how many parts of the system are using the vnode. This allows the system to detect when a vnode is no longer being used and can be safely recycled for a different file.
Any code in the system which uses a vnode (e.g. during
the operation of some algorithm or to store in a data structure) should call
This man page was originally written by Doug Rabson for FreeBSD.
|June 4, 2013||OpenBSD-current|