php man page for vhold

Query: vhold

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Section: 9

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VHOLD(9)						   BSD Kernel Developer's Manual						  VHOLD(9)

NAME
vhold, vdrop, vdropl -- acquire/release a hold on a vnode
SYNOPSIS
#include <sys/param.h> #include <sys/vnode.h> void vhold(struct vnode *vp); void vholdl(struct vnode *vp); void vdrop(struct vnode *vp); void vdropl(struct vnode *vp);
DESCRIPTION
The vhold() and vholdl() functions increment the v_holdcnt of the given vnode. If the vnode has already been added to the free list and is still referenced, it will be removed. The vdrop() and vdropl() functions decrement the v_holdcnt of the vnode. If the holdcount is less than or equal to zero prior to calling vdrop() or vdropl(), the system will panic. If the vnode is no longer referenced, it will be freed. vhold() and vdrop() lock the vnode interlock while vholdl() and vdropl() expect the interlock to already be held.
SEE ALSO
vnode(9)
AUTHORS
This manual page was written by Chad David <davidc@acns.ab.ca>.
BSD
April 1, 2007 BSD
Related Man Pages
vrele(9) - debian
vunref(9) - debian
vput(9) - linux
vrele(9) - minix
vput(9) - minix
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