d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Reflect changes for the vfs_busy() prototype.

Browse Source
This commit is contained in:
Attilio Rao 2008-11-02 10:33:57 +00:00
parent b23e9e9d85
commit 1efbe1a4be
1 changed files with 7 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
share/man/man9/vfs_busy.9
View File

@ -26,7 +26,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd August 29, 2008
.Dd November 2, 2008
.Dt VFS_BUSY 9
.Os
.Sh NAME
@ -36,7 +36,7 @@
.In sys/param.h
.In sys/mount.h
.Ft int
.Fn vfs_busy "struct mount *mp" "int flags" "struct mtx *interlkp"
.Fn vfs_busy "struct mount *mp" "int flags"
.Sh DESCRIPTION
The
.Fn vfs_busy
@ -56,33 +56,22 @@ flag is
set.
.Pp
Its arguments are:
.Bl -tag -width ".Fa interlkp"
.Bl -tag -width ".Fa flags"
.It Fa mp
The mount point to busy.
.It Fa flags
Flags controlling how
.Fn vfs_busy
should act.
.Bl -tag -width ".Dv LK_NOWAIT"
.It Dv LK_NOWAIT
.Bl -tag -width ".Dv MBF_MNTLSTLOCK"
.It Dv MBF_NOWAIT
do not sleep if
.Dv MNTK_UNMOUNT
is set.
.It Dv MBF_MNTLSTLOCK
drop the mountlist_mtx in the critical path.
.El
.It Fa interlkp
The interlock mutex for
.Fa mp->mount_lock .
If there is any chance
the mount point is being unmounted and
.Dv LK_NOWAIT
is not set then
interlock must be valid locked mutex.
.El
.Sh LOCKS
If
.Fa interlkp
is a valid pointer it must be locked on entry,
and it will not be unlocked even in the case of an error.
.Sh RETURN VALUES
A 0 value is returned on success.
If the mount point is being