Get a vnode from the free list and increment its reference count.
|
| vp
|
| |
The vnode to remove from the free list.
|
| lockflag
|
| |
If non-zero, the vnode will also be locked.
|
|
When not in use, vnodes are kept on a free list.
The vnodes still
reference valid files but may be reused to refer to a new file at any
time.
Often, these vnodes are also held in caches in the system, such
as the name cache.
When a vnode which is on the free list is used again, for instance if
the vnode was found in the name cache as a result of a call to
VOP_LOOKUP(9)
then the new user must call
vget()
to increment the reference count and remove it from the free list.
