1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (c) 2001, 2002 Cluster File Systems, Inc.
6 * This file is part of Lustre, http://www.lustre.org.
8 * Lustre is free software; you can redistribute it and/or
9 * modify it under the terms of version 2 of the GNU General Public
10 * License as published by the Free Software Foundation.
12 * Lustre is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with Lustre; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 #include <linux/locks.h>
24 #include <linux/quotaops.h>
26 #define DEBUG_SUBSYSTEM S_LLITE
28 #include <linux/obd_support.h>
29 #include <linux/lustre_lite.h>
30 #include <linux/lustre_dlm.h>
32 extern struct address_space_operations ll_aops;
34 void ll_intent_release(struct dentry *de)
36 struct lustre_handle *handle;
39 if (de->d_it == NULL) {
43 if (de->d_it->it_lock_mode) {
44 handle = (struct lustre_handle *)de->d_it->it_lock_handle;
45 if (de->d_it->it_op == IT_SETATTR) {
47 ldlm_lock_decref(handle, de->d_it->it_lock_mode);
48 rc = ldlm_cli_cancel(handle);
50 CERROR("ldlm_cli_cancel: %d\n", rc);
52 ldlm_lock_decref(handle, de->d_it->it_lock_mode);
58 int ll_revalidate2(struct dentry *de, int flags, struct lookup_intent *it)
60 struct ll_sb_info *sbi = ll_s2sbi(de->d_sb);
61 struct lustre_handle lockh;
62 __u64 res_id[RES_NAME_SIZE] = {0};
63 struct obd_device *obddev;
66 /* right now we're only interested in IT_OPEN and IT_LOOKUP */
68 CDEBUG(D_INFO, "name: %*s, intent: %s\n", de->d_name.len,
69 de->d_name.name, ldlm_it2str(it->it_op));
70 if (!(it->it_op & IT_OPEN))
77 obddev = class_conn2obd(&sbi->ll_mdc_conn);
78 res_id[0] = de->d_inode->i_ino;
80 CDEBUG(D_INFO, "trying to match res "LPU64"\n", res_id[0]);
82 if (ldlm_lock_match(obddev->obd_namespace, res_id, LDLM_MDSINTENT,
83 NULL, 0, LCK_PR, &lockh)) {
84 ldlm_lock_decref(&lockh, LCK_PR);
88 if (ldlm_lock_match(obddev->obd_namespace, res_id, LDLM_MDSINTENT,
89 NULL, 0, LCK_PW, &lockh)) {
90 ldlm_lock_decref(&lockh, LCK_PW);
94 /* If we're acting on an IT_OPEN intent and the file is already open,
95 * we won't get called in lookup2 if we return 0, so return 1.
97 * This is a temporary fix for bug 618962, but is one of the causes of
99 CDEBUG(D_INFO, "d_count: %d\n", atomic_read(&de->d_count));
100 if (atomic_read(&de->d_count) > 0)
106 struct dentry_operations ll_d_ops = {
107 d_revalidate2: ll_revalidate2,
108 d_intent_release: ll_intent_release