diff options
Diffstat (limited to 'libdiskfs/node-nputl.c')
-rw-r--r-- | libdiskfs/node-nputl.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/libdiskfs/node-nputl.c b/libdiskfs/node-nputl.c new file mode 100644 index 00000000..337bb25d --- /dev/null +++ b/libdiskfs/node-nputl.c @@ -0,0 +1,38 @@ +/* + Copyright (C) 1999 Free Software Foundation, Inc. + Written by Thomas Bushnell, BSG. + + This file is part of the GNU Hurd. + + The GNU Hurd is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License as + published by the Free Software Foundation; either version 2, or (at + your option) any later version. + + The GNU Hurd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA. */ + + +#include "priv.h" + +/* Unlock node NP and release a light reference */ +DISKFS_EI void +diskfs_nput_light (struct node *np) +{ + spin_lock (&diskfs_node_refcnt_lock); + assert (np->light_references); + np->light_references--; + if (np->references + np->light_references == 0) + diskfs_drop_node (np); + else + { + spin_unlock (&diskfs_node_refcnt_lock); + mutex_unlock (&np->lock); + } +} |