VGET(9) BSD Kernel Developer's Manual VGET(9)NAME
vget -- get a vnode from the free list
vget(struct vnode *vp, int lockflag, struct thread *td);
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.
SEE ALSO vnode(9), vput(9), vref(9), vrele(9)AUTHORS
This manual page was written by Doug Rabson.
BSD July 24, 1996 BSD
Check Out this Related Man Page
VRELE(9) BSD Kernel Developer's Manual VRELE(9)NAME
vput, vrele, vunref -- decrement the use count for a vnode
vput(struct vnode *vp);
vrele(struct vnode *vp);
vunref(struct vnode *vp);
Decrement the v_usecount field of a vnode.
vp the vnode to decrement
The vrele() function takes an unlocked vnode and returns with the vnode unlocked.
The vput() function should be given a locked vnode as argument, the vnode is unlocked after the function returned. The vput() is opera-
tionally equivalent to calling VOP_UNLOCK(9) followed by vrele(9), with less overhead.
The vunref() function takes a locked vnode as argument, and returns with the vnode locked.
Any code in the system which signified its use of a vnode by usecount should call one of the listed function to decrement use counter. If
the v_usecount field of the non-doomed vnode reaches zero, then it will be inactivated and placed on the free list. Since the functions
might need to call VOPs for the vnode, the Giant mutex should be conditionally locked around the call.
The hold count for the vnode is always greater or equal to the usecount. Non-forced unmount fails when mount point owns a vnode that has
non-zero usecount, see vflush(9).
SEE ALSO vget(9), vnode(9), vref(9), vrefcnt(9)AUTHORS
This manual page was written by Doug Rabson and
BSD November 20, 2010 BSD
i need you help on this if you can.
I have a script that does the move command when it searches for a that doesn't match the pattern. This Pattern is on a list.
When it run's and doesn´t found no files but it haves 2 more folders it moves the folders too.
Ex:... (1 Reply)
I can compile and link a piece of code on Solaris 2.6 .. I want the same thing to be done on Solaris8..
I am getting symbolic refernce errors while linking... Errors looks to be with proc symbols defination.. Any ideas ??
expand_file "cc -G... (0 Replies)
I am trying to run niminv on my nim master to collect info from my nim clients.
: / -> niminv -o invcon -a targets=<nimclient> -a location=/tmp/inventory
rshd: 0826-813 Permission is denied.
geninv: 0645-007 ATTENTION: gi_nim_standalone() returned an unexpected result.
Return Status: FAILURE... (4 Replies)
I've been working on something which requires a dialup USB Modem. I have been using minicom with success entering "AT Commands" directly into
the terminal window that shows after running the minicom command. I had already configured the modem through minicom and was able to... (2 Replies)
I am writing an ebuild for Gentoo Linux operating system.
Writing an ebuild is about Bash scripting where I am a newbie.
So, my ebuild must find a part of a specific filename.
Such a filaname my look like this:
libvclient_release_x64.so.740and I must to find the number at the and of... (18 Replies)
Waiting for more fun Ardunio parts from AliExpress, I decided to test two cheap Chinese Arduino UNO clones.
The Arduino UNO R3 (CH340G) MEGA328P
The Wavgat UNO R3 (CH340G) MEGA328P
Both of these Chinese Ardunio clones sell for about $3 USD, delivered to your door.
The bottom line is... (0 Replies)