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path: root/fs/dlm/config.c
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Diffstat (limited to 'fs/dlm/config.c')
-rw-r--r--fs/dlm/config.c50
1 files changed, 40 insertions, 10 deletions
diff --git a/fs/dlm/config.c b/fs/dlm/config.c
index c3ad1dff3b25..eac23bd288b2 100644
--- a/fs/dlm/config.c
+++ b/fs/dlm/config.c
@@ -114,7 +114,7 @@ struct cluster_attribute {
};
static ssize_t cluster_set(struct cluster *cl, unsigned int *cl_field,
- unsigned int *info_field, int check_zero,
+ int *info_field, int check_zero,
const char *buf, size_t len)
{
unsigned int x;
@@ -284,6 +284,7 @@ struct node {
struct list_head list; /* space->members */
int nodeid;
int weight;
+ int new;
};
static struct configfs_group_operations clusters_ops = {
@@ -565,6 +566,7 @@ static struct config_item *make_node(struct config_group *g, const char *name)
config_item_init_type_name(&nd->item, name, &node_type);
nd->nodeid = -1;
nd->weight = 1; /* default weight of 1 if none is set */
+ nd->new = 1; /* set to 0 once it's been read by dlm_nodeid_list() */
mutex_lock(&sp->members_lock);
list_add(&nd->list, &sp->members);
@@ -805,12 +807,13 @@ static void put_comm(struct comm *cm)
}
/* caller must free mem */
-int dlm_nodeid_list(char *lsname, int **ids_out)
+int dlm_nodeid_list(char *lsname, int **ids_out, int *ids_count_out,
+ int **new_out, int *new_count_out)
{
struct space *sp;
struct node *nd;
- int i = 0, rv = 0;
- int *ids;
+ int i = 0, rv = 0, ids_count = 0, new_count = 0;
+ int *ids, *new;
sp = get_space(lsname);
if (!sp)
@@ -818,23 +821,50 @@ int dlm_nodeid_list(char *lsname, int **ids_out)
mutex_lock(&sp->members_lock);
if (!sp->members_count) {
- rv = 0;
+ rv = -EINVAL;
+ printk(KERN_ERR "dlm: zero members_count\n");
goto out;
}
- ids = kcalloc(sp->members_count, sizeof(int), GFP_KERNEL);
+ ids_count = sp->members_count;
+
+ ids = kcalloc(ids_count, sizeof(int), GFP_KERNEL);
if (!ids) {
rv = -ENOMEM;
goto out;
}
- rv = sp->members_count;
- list_for_each_entry(nd, &sp->members, list)
+ list_for_each_entry(nd, &sp->members, list) {
ids[i++] = nd->nodeid;
+ if (nd->new)
+ new_count++;
+ }
+
+ if (ids_count != i)
+ printk(KERN_ERR "dlm: bad nodeid count %d %d\n", ids_count, i);
+
+ if (!new_count)
+ goto out_ids;
+
+ new = kcalloc(new_count, sizeof(int), GFP_KERNEL);
+ if (!new) {
+ kfree(ids);
+ rv = -ENOMEM;
+ goto out;
+ }
- if (rv != i)
- printk("bad nodeid count %d %d\n", rv, i);
+ i = 0;
+ list_for_each_entry(nd, &sp->members, list) {
+ if (nd->new) {
+ new[i++] = nd->nodeid;
+ nd->new = 0;
+ }
+ }
+ *new_count_out = new_count;
+ *new_out = new;
+ out_ids:
+ *ids_count_out = ids_count;
*ids_out = ids;
out:
mutex_unlock(&sp->members_lock);