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Be more clear about LOCKLEAF being exclusive and add LOCKSHARED.

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This commit is contained in:
Bryan Drewery 2016-05-23 21:29:57 +00:00
parent 1b82e02f4d
commit f0c619b22f
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=300540
1 changed files with 20 additions and 3 deletions
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23
share/man/man9/namei.9
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@ -33,7 +33,7 @@
.\" .\"
.\" $FreeBSD$ .\" $FreeBSD$
.\" .\"
.Dd May 6, 2015 .Dd May 23, 2015
.Dt NAMEI 9 .Dt NAMEI 9
.Os .Os
.Sh NAME .Sh NAME
@ -121,8 +121,12 @@ function takes the following set of
that influence its operation: that influence its operation:
.Bl -tag -width ".Dv WANTPARENT" .Bl -tag -width ".Dv WANTPARENT"
.It Dv LOCKLEAF .It Dv LOCKLEAF
Lock vnode on return. Lock vnode on return with
This is a full lock of the vnode; the .Dv LK_EXCLUSIVE
unless
.Dv LOCKSHARED
is also set.
The
.Xr VOP_UNLOCK 9 .Xr VOP_UNLOCK 9
should be used should be used
to release the lock (or to release the lock (or
@ -149,6 +153,19 @@ or
.Xr VOP_UNLOCK 9 .Xr VOP_UNLOCK 9
and and
.Xr vrele 9 . .Xr vrele 9 .
.It Dv LOCKSHARED
Lock vnode on return with
.Dv LK_SHARED .
The
.Xr VOP_UNLOCK 9
should be used
to release the lock (or
.Xr vput 9
which is equivalent to calling
.Xr VOP_UNLOCK 9
followed by
.Xr vrele 9 ,
all in one).
.It Dv WANTPARENT .It Dv WANTPARENT
This flag allows the This flag allows the
.Fn namei .Fn namei