git: 90be4091a76e - main - insmntque(9): update and correct man page

The branch main has been updated by kib:

URL: https://cgit.FreeBSD.org/src/commit/?id=90be4091a76e89bcd6c917e885bd679d66d36458

commit 90be4091a76e89bcd6c917e885bd679d66d36458
Author:     Konstantin Belousov <kib@FreeBSD.org>
AuthorDate: 2022-01-29 00:55:28 +0000
Commit:     Konstantin Belousov <kib@FreeBSD.org>
CommitDate: 2022-01-31 14:51:05 +0000

    insmntque(9): update and correct man page
    
    Reviewed by:    markj
    Sponsored by:   The FreeBSD Foundation
    Differential revision:  https://reviews.freebsd.org/D34071
---
 share/man/man9/insmntque.9 | 34 +++++++++++++++++++---------------
 1 file changed, 19 insertions(+), 15 deletions(-)

diff --git a/share/man/man9/insmntque.9 b/share/man/man9/insmntque.9
index ae94d901b755..543c64a2bbe1 100644
--- a/share/man/man9/insmntque.9
+++ b/share/man/man9/insmntque.9
@@ -26,7 +26,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd September 8, 2008
+.Dd January 29, 2022
 .Dt INSMNTQUE 9
 .Os
 .Sh NAME
@@ -39,7 +39,7 @@
 .Ft int
 .Fn insmntque "struct vnode *vp" "struct mount *mp"
 .Ft int
-.Fn insmntque1 "struct vnode *vp" "struct mount *mp" "void (*dtr)(struct vnode *, void *)" "void *dtr_arg"
+.Fn insmntque1 "struct vnode *vp" "struct mount *mp"
 .Sh DESCRIPTION
 The
 .Fn insmntque
@@ -48,32 +48,36 @@ This includes updating
 .Va v_mount
 for the vnode, and inserting the vnode into the mount's vnode list.
 .Pp
-The mount reference count is incremented for each vnode added to the
+The indirect mount reference count, maintained as the count of the
+vnodes owned by it, is incremented for each vnode added to the
 mount, and that reference is decremented by
 .Xr vgone 9 .
 .Pp
 The mount's interlock is held while the vnode is inserted.
-For MP-safe file systems, the vnode must be exclusively locked.
+The vnode must be exclusively locked.
 .Pp
 On failure,
 .Fn insmntque
-calls
+resets vnode' operation vector to the vector of
+.Xr deadfs 9 ,
+clears
+.Va v_data ,
+and then calls
 .Xr vgone 9
-on the supplied vnode, and then drops the vnode lock and reference.
+and
+.Xr vput 9 .
 If more elaborated cleanup after
 .Fn insmntque
 failure is needed, the
 .Fn insmntque1
 function may be used instead.
-The
-.Fa dtr
-argument is a pointer to a function that is called on failure.
-This function may perform any custom cleanup.
-The vnode pointer is supplied as the first argument to
-.Fa dtr .
-The
-.Fa dtr_arg
-argument is the second, supplying any additional context needed.
+It does not do any cleanup following a failure, leaving all
+the work to the caller.
+In particular, the operation vector
+.Va v_op
+and
+.Va v_data
+fields of the vnode are kept intact.
 .Sh RETURN VALUES
 The
 .Fn insmntque