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-rw-r--r--fs/dlm/dir.c66
1 files changed, 32 insertions, 34 deletions
diff --git a/fs/dlm/dir.c b/fs/dlm/dir.c
index 600bb1d1a9b6..ff97ba924333 100644
--- a/fs/dlm/dir.c
+++ b/fs/dlm/dir.c
@@ -329,49 +329,47 @@ int dlm_dir_lookup(struct dlm_ls *ls, int nodeid, char *name, int namelen,
return get_entry(ls, nodeid, name, namelen, r_nodeid);
}
-/* Copy the names of master rsb's into the buffer provided.
- Only select names whose dir node is the given nodeid. */
+static struct dlm_rsb *find_rsb_root(struct dlm_ls *ls, char *name, int len)
+{
+ struct dlm_rsb *r;
+
+ down_read(&ls->ls_root_sem);
+ list_for_each_entry(r, &ls->ls_root_list, res_root_list) {
+ if (len == r->res_length && !memcmp(name, r->res_name, len)) {
+ up_read(&ls->ls_root_sem);
+ return r;
+ }
+ }
+ up_read(&ls->ls_root_sem);
+ return NULL;
+}
+
+/* Find the rsb where we left off (or start again), then send rsb names
+ for rsb's we're master of and whose directory node matches the requesting
+ node. inbuf is the rsb name last sent, inlen is the name's length */
void dlm_copy_master_names(struct dlm_ls *ls, char *inbuf, int inlen,
char *outbuf, int outlen, int nodeid)
{
struct list_head *list;
- struct dlm_rsb *start_r = NULL, *r = NULL;
- int offset = 0, start_namelen, error, dir_nodeid;
- char *start_name;
+ struct dlm_rsb *r;
+ int offset = 0, dir_nodeid;
uint16_t be_namelen;
- /*
- * Find the rsb where we left off (or start again)
- */
-
- start_namelen = inlen;
- start_name = inbuf;
-
- if (start_namelen > 1) {
- /*
- * We could also use a find_rsb_root() function here that
- * searched the ls_root_list.
- */
- error = dlm_find_rsb(ls, start_name, start_namelen, R_MASTER,
- &start_r);
- DLM_ASSERT(!error && start_r,
- printk("error %d\n", error););
- DLM_ASSERT(!list_empty(&start_r->res_root_list),
- dlm_print_rsb(start_r););
- dlm_put_rsb(start_r);
- }
-
- /*
- * Send rsb names for rsb's we're master of and whose directory node
- * matches the requesting node.
- */
-
down_read(&ls->ls_root_sem);
- if (start_r)
- list = start_r->res_root_list.next;
- else
+
+ if (inlen > 1) {
+ r = find_rsb_root(ls, inbuf, inlen);
+ if (!r) {
+ inbuf[inlen - 1] = '\0';
+ log_error(ls, "copy_master_names from %d start %d %s",
+ nodeid, inlen, inbuf);
+ goto out;
+ }
+ list = r->res_root_list.next;
+ } else {
list = ls->ls_root_list.next;
+ }
for (offset = 0; list != &ls->ls_root_list; list = list->next) {
r = list_entry(list, struct dlm_rsb, res_root_list);