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-rw-r--r--fs/dlm/lockspace.c71
1 files changed, 49 insertions, 22 deletions
diff --git a/fs/dlm/lockspace.c b/fs/dlm/lockspace.c
index a1d8f1af144b..a1ea25face82 100644
--- a/fs/dlm/lockspace.c
+++ b/fs/dlm/lockspace.c
@@ -2,7 +2,7 @@
*******************************************************************************
**
** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
-** Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
+** Copyright (C) 2004-2011 Red Hat, Inc. All rights reserved.
**
** This copyrighted material is made available to anyone wishing to use,
** modify, copy, or redistribute it subject to the terms and conditions
@@ -386,12 +386,15 @@ static void threads_stop(void)
dlm_lowcomms_stop();
}
-static int new_lockspace(const char *name, int namelen, void **lockspace,
- uint32_t flags, int lvblen)
+static int new_lockspace(const char *name, const char *cluster,
+ uint32_t flags, int lvblen,
+ const struct dlm_lockspace_ops *ops, void *ops_arg,
+ int *ops_result, dlm_lockspace_t **lockspace)
{
struct dlm_ls *ls;
int i, size, error;
int do_unreg = 0;
+ int namelen = strlen(name);
if (namelen > DLM_LOCKSPACE_LEN)
return -EINVAL;
@@ -403,8 +406,24 @@ static int new_lockspace(const char *name, int namelen, void **lockspace,
return -EINVAL;
if (!dlm_user_daemon_available()) {
- module_put(THIS_MODULE);
- return -EUNATCH;
+ log_print("dlm user daemon not available");
+ error = -EUNATCH;
+ goto out;
+ }
+
+ if (ops && ops_result) {
+ if (!dlm_config.ci_recover_callbacks)
+ *ops_result = -EOPNOTSUPP;
+ else
+ *ops_result = 0;
+ }
+
+ if (dlm_config.ci_recover_callbacks && cluster &&
+ strncmp(cluster, dlm_config.ci_cluster_name, DLM_LOCKSPACE_LEN)) {
+ log_print("dlm cluster name %s mismatch %s",
+ dlm_config.ci_cluster_name, cluster);
+ error = -EBADR;
+ goto out;
}
error = 0;
@@ -442,6 +461,11 @@ static int new_lockspace(const char *name, int namelen, void **lockspace,
ls->ls_flags = 0;
ls->ls_scan_time = jiffies;
+ if (ops && dlm_config.ci_recover_callbacks) {
+ ls->ls_ops = ops;
+ ls->ls_ops_arg = ops_arg;
+ }
+
if (flags & DLM_LSFL_TIMEWARN)
set_bit(LSFL_TIMEWARN, &ls->ls_flags);
@@ -457,8 +481,8 @@ static int new_lockspace(const char *name, int namelen, void **lockspace,
if (!ls->ls_rsbtbl)
goto out_lsfree;
for (i = 0; i < size; i++) {
- INIT_LIST_HEAD(&ls->ls_rsbtbl[i].list);
- INIT_LIST_HEAD(&ls->ls_rsbtbl[i].toss);
+ ls->ls_rsbtbl[i].keep.rb_node = NULL;
+ ls->ls_rsbtbl[i].toss.rb_node = NULL;
spin_lock_init(&ls->ls_rsbtbl[i].lock);
}
@@ -525,6 +549,11 @@ static int new_lockspace(const char *name, int namelen, void **lockspace,
if (!ls->ls_recover_buf)
goto out_dirfree;
+ ls->ls_slot = 0;
+ ls->ls_num_slots = 0;
+ ls->ls_slots_size = 0;
+ ls->ls_slots = NULL;
+
INIT_LIST_HEAD(&ls->ls_recover_list);
spin_lock_init(&ls->ls_recover_list_lock);
ls->ls_recover_list_count = 0;
@@ -614,8 +643,10 @@ static int new_lockspace(const char *name, int namelen, void **lockspace,
return error;
}
-int dlm_new_lockspace(const char *name, int namelen, void **lockspace,
- uint32_t flags, int lvblen)
+int dlm_new_lockspace(const char *name, const char *cluster,
+ uint32_t flags, int lvblen,
+ const struct dlm_lockspace_ops *ops, void *ops_arg,
+ int *ops_result, dlm_lockspace_t **lockspace)
{
int error = 0;
@@ -625,7 +656,8 @@ int dlm_new_lockspace(const char *name, int namelen, void **lockspace,
if (error)
goto out;
- error = new_lockspace(name, namelen, lockspace, flags, lvblen);
+ error = new_lockspace(name, cluster, flags, lvblen, ops, ops_arg,
+ ops_result, lockspace);
if (!error)
ls_count++;
if (error > 0)
@@ -685,7 +717,7 @@ static int lockspace_busy(struct dlm_ls *ls, int force)
static int release_lockspace(struct dlm_ls *ls, int force)
{
struct dlm_rsb *rsb;
- struct list_head *head;
+ struct rb_node *n;
int i, busy, rv;
busy = lockspace_busy(ls, force);
@@ -746,20 +778,15 @@ static int release_lockspace(struct dlm_ls *ls, int force)
*/
for (i = 0; i < ls->ls_rsbtbl_size; i++) {
- head = &ls->ls_rsbtbl[i].list;
- while (!list_empty(head)) {
- rsb = list_entry(head->next, struct dlm_rsb,
- res_hashchain);
-
- list_del(&rsb->res_hashchain);
+ while ((n = rb_first(&ls->ls_rsbtbl[i].keep))) {
+ rsb = rb_entry(n, struct dlm_rsb, res_hashnode);
+ rb_erase(n, &ls->ls_rsbtbl[i].keep);
dlm_free_rsb(rsb);
}
- head = &ls->ls_rsbtbl[i].toss;
- while (!list_empty(head)) {
- rsb = list_entry(head->next, struct dlm_rsb,
- res_hashchain);
- list_del(&rsb->res_hashchain);
+ while ((n = rb_first(&ls->ls_rsbtbl[i].toss))) {
+ rsb = rb_entry(n, struct dlm_rsb, res_hashnode);
+ rb_erase(n, &ls->ls_rsbtbl[i].toss);
dlm_free_rsb(rsb);
}
}