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-rw-r--r--fs/dlm/dir.c66
-rw-r--r--fs/dlm/lock.c6
-rw-r--r--fs/dlm/lock.h2
-rw-r--r--fs/dlm/recover.c25
-rw-r--r--fs/dlm/recoverd.c11
5 files changed, 61 insertions, 49 deletions
diff --git a/fs/dlm/dir.c b/fs/dlm/dir.c
index 600bb1d..ff97ba9 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);
diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c
index 7ee7c7c..ff4a198 100644
--- a/fs/dlm/lock.c
+++ b/fs/dlm/lock.c
@@ -489,12 +489,6 @@ static int find_rsb(struct dlm_ls *ls, char *name, int namelen,
return error;
}
-int dlm_find_rsb(struct dlm_ls *ls, char *name, int namelen,
- unsigned int flags, struct dlm_rsb **r_ret)
-{
- return find_rsb(ls, name, namelen, flags, r_ret);
-}
-
/* This is only called to add a reference when the code already holds
a valid reference to the rsb, so there's no need for locking. */
diff --git a/fs/dlm/lock.h b/fs/dlm/lock.h
index ada0468..27b6ed3 100644
--- a/fs/dlm/lock.h
+++ b/fs/dlm/lock.h
@@ -19,8 +19,6 @@ void dlm_print_lkb(struct dlm_lkb *lkb);
void dlm_receive_message_saved(struct dlm_ls *ls, struct dlm_message *ms);
void dlm_receive_buffer(struct dlm_header *hd, int nodeid);
int dlm_modes_compat(int mode1, int mode2);
-int dlm_find_rsb(struct dlm_ls *ls, char *name, int namelen,
- unsigned int flags, struct dlm_rsb **r_ret);
void dlm_put_rsb(struct dlm_rsb *r);
void dlm_hold_rsb(struct dlm_rsb *r);
int dlm_put_lkb(struct dlm_lkb *lkb);
diff --git a/fs/dlm/recover.c b/fs/dlm/recover.c
index 2f9d9a3..df075dc 100644
--- a/fs/dlm/recover.c
+++ b/fs/dlm/recover.c
@@ -731,6 +731,20 @@ int dlm_create_root_list(struct dlm_ls *ls)
list_add(&r->res_root_list, &ls->ls_root_list);
dlm_hold_rsb(r);
}
+
+ /* If we're using a directory, add tossed rsbs to the root
+ list; they'll have entries created in the new directory,
+ but no other recovery steps should do anything with them. */
+
+ if (dlm_no_directory(ls)) {
+ read_unlock(&ls->ls_rsbtbl[i].lock);
+ continue;
+ }
+
+ list_for_each_entry(r, &ls->ls_rsbtbl[i].toss, res_hashchain) {
+ list_add(&r->res_root_list, &ls->ls_root_list);
+ dlm_hold_rsb(r);
+ }
read_unlock(&ls->ls_rsbtbl[i].lock);
}
out:
@@ -750,6 +764,11 @@ void dlm_release_root_list(struct dlm_ls *ls)
up_write(&ls->ls_root_sem);
}
+/* If not using a directory, clear the entire toss list, there's no benefit to
+ caching the master value since it's fixed. If we are using a dir, keep the
+ rsb's we're the master of. Recovery will add them to the root list and from
+ there they'll be entered in the rebuilt directory. */
+
void dlm_clear_toss_list(struct dlm_ls *ls)
{
struct dlm_rsb *r, *safe;
@@ -759,8 +778,10 @@ void dlm_clear_toss_list(struct dlm_ls *ls)
write_lock(&ls->ls_rsbtbl[i].lock);
list_for_each_entry_safe(r, safe, &ls->ls_rsbtbl[i].toss,
res_hashchain) {
- list_del(&r->res_hashchain);
- dlm_free_rsb(r);
+ if (dlm_no_directory(ls) || !is_master(r)) {
+ list_del(&r->res_hashchain);
+ dlm_free_rsb(r);
+ }
}
write_unlock(&ls->ls_rsbtbl[i].lock);
}
diff --git a/fs/dlm/recoverd.c b/fs/dlm/recoverd.c
index 4b89e20..997f953 100644
--- a/fs/dlm/recoverd.c
+++ b/fs/dlm/recoverd.c
@@ -67,17 +67,18 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv)
dlm_astd_resume();
/*
- * This list of root rsb's will be the basis of most of the recovery
- * routines.
+ * Free non-master tossed rsb's. Master rsb's are kept on toss
+ * list and put on root list to be included in resdir recovery.
*/
- dlm_create_root_list(ls);
+ dlm_clear_toss_list(ls);
/*
- * Free all the tossed rsb's so we don't have to recover them.
+ * This list of root rsb's will be the basis of most of the recovery
+ * routines.
*/
- dlm_clear_toss_list(ls);
+ dlm_create_root_list(ls);
/*
* Add or remove nodes from the lockspace's ls_nodes list.