Provided by: freebsd-manpages_8.2-1_all
vfs_busy — marks a mount point as busy
vfs_busy(struct mount *mp, int flags);
The vfs_busy() function marks a mount point as busy by incrementing the
reference count of a mount point. It also delays unmounting by sleeping
on mp if the MNTK_UNMOUNT flag is set in mp->mnt_kern_flag and the
MBF_NOWAIT flag is not set.
Its arguments are:
mp The mount point to busy.
flags Flags controlling how vfs_busy() should act.
MBF_NOWAIT do not sleep if MNTK_UNMOUNT is set.
MBF_MNTLSTLOCK drop the mountlist_mtx in the critical path.
A 0 value is returned on success. If the mount point is being unmounted
and MBF_NOWAIT flag is specified ENOENT will be returned.
[ENOENT] The mount point is being unmounted (MNTK_UNMOUNT is
This manual page was written by Chad David ⟨email@example.com⟩.