Module Name: src
Committed By: hannken
Date: Mon Apr 17 08:33:40 UTC 2017
Modified Files:
src/share/man/man9: vfssubr.9
Log Message:
Update vfs_busy(), vfs_unbusy(), vfs_mountalloc() and vfs_rootmountalloc().
To generate a diff of this commit:
cvs rdiff -u -r1.25 -r1.26 src/share/man/man9/vfssubr.9
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/share/man/man9/vfssubr.9
diff -u src/share/man/man9/vfssubr.9:1.25 src/share/man/man9/vfssubr.9:1.26
--- src/share/man/man9/vfssubr.9:1.25 Sat May 24 17:14:02 2014
+++ src/share/man/man9/vfssubr.9 Mon Apr 17 08:33:40 2017
@@ -1,4 +1,4 @@
-.\" $NetBSD: vfssubr.9,v 1.25 2014/05/24 17:14:02 wiz Exp $
+.\" $NetBSD: vfssubr.9,v 1.26 2017/04/17 08:33:40 hannken Exp $
.\"
.\" Copyright (c) 2003, 2005, 2006 The NetBSD Foundation, Inc.
.\" All rights reserved.
@@ -27,7 +27,7 @@
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
.\" POSSIBILITY OF SUCH DAMAGE.
.\"
-.Dd May 24, 2014
+.Dd Apr 17, 2017
.Dt VFSSUBR 9
.Os
.Sh NAME
@@ -77,9 +77,9 @@
.Ft void
.Fn vfs_unmountall "struct lwp *l"
.Ft int
-.Fn vfs_busy "struct mount *mp" "struct mount **nextp"
+.Fn vfs_busy "struct mount *mp"
.Ft void
-.Fn vfs_unbusy "struct mount *mp" "bool keepref" "struct mount **nextp"
+.Fn vfs_unbusy "struct mount *mp"
.Ft struct mount *
.Fn vfs_mountalloc "struct vfsops *vfs" "struct vnode *vp"
.Ft int
@@ -139,42 +139,17 @@ by the vnode
Mount the root file system.
.It Fn vfs_unmountall "l"
Unmount all file systems.
-.It Fn vfs_busy "mp" "nextp"
+.It Fn vfs_busy "mp"
Mark the mount point specified by
.Fa mp
as busy and get a reference to it.
This function is used to synchronize access and to delay unmounting.
The caller must hold a pre-existing reference to the mount.
-If
-.Fa nextp
-is not
-.Dv NULL ,
-the caller must hold the
-.Em mountlist_lock
-and
-.Fa nextp
-will receive the next mount from mount list on error.
-The
-.Em mountlist_lock
-is released on return.
-.It Fn vfs_unbusy "mp" "keepref" "nextp"
+.It Fn vfs_unbusy "mp"
Undo a
.Fn vfs_busy
on the mount point specified by
.Fa mp .
-If
-.Fa keepref
-is true, preserve the reference added by
-.Fn vfs_busy .
-If
-.Fa nextp
-is not
-.Dv NULL ,
-the
-.Em mountlist_lock
-will be aquired and
-.Fa nextp
-will receive the next mount from mount list.
.It Fn vfs_mountalloc "vfsops" "vp"
Allocate and initialise a mount structure, setting
.Em mnt_vnodecovered
@@ -184,14 +159,15 @@ and
.Em mnt_op
to
.Fa vfsops .
-On success, mark the mount structure as busy and return its address.
+On success return the address of the mount structure.
Otherwise, return
.Dv NULL .
.It Fn vfs_rootmountalloc "fstypename" "devname" "mpp"
Lookup a file system type specified by the name
.Fa fstypename
and if found allocate and initialise a mount structure for it.
-The allocated mount structure is returned in the address specified by
+The allocated mount structure is marked as busy and returned in the
+address specified by
.Fa mpp .
The device the root file system was mounted from is specified by the
argument
