MBF_MNTLSTLOCK
error = vfs_busy(mp, MBF_MNTLSTLOCK);
if (vfs_busy(mp, MBF_NOWAIT | MBF_MNTLSTLOCK))
error = vfs_busy(mp, MBF_MNTLSTLOCK);
error = vfs_busy(mp, MBF_MNTLSTLOCK | MBF_NOWAIT);
error = vfs_busy(mp, MBF_MNTLSTLOCK | MBF_NOWAIT);
error = vfs_busy(mp, MBF_MNTLSTLOCK);
if (flags & MBF_MNTLSTLOCK)
if (flags & MBF_MNTLSTLOCK)
if (flags & MBF_MNTLSTLOCK)
if (flags & MBF_MNTLSTLOCK)
if (vfs_busy(mp, MBF_NOWAIT | MBF_MNTLSTLOCK)) {
if (vfs_busy(mp, MBF_MNTLSTLOCK) != 0) {
if (vfs_busy(mp, MBF_NOWAIT | MBF_MNTLSTLOCK) != 0) {
#define MBF_MASK (MBF_NOWAIT | MBF_MNTLSTLOCK)