dlm: change rsbtbl rwlock to spinlock

The rwlock is almost always used in write mode, so there's no reason
to not use a spinlock instead.

Signed-off-by: David Teigland <teigland@redhat.com>

1 files changed, 5 insertions, 5 deletions

diff --git a/fs/dlm/recover.c b/fs/dlm/recover.c
index 80aba5bdd4a4..eda43f362616 100644
--- a/fs/dlm/recover.c
+++ b/fs/dlm/recover.c
@@ -726,7 +726,7 @@ int dlm_create_root_list(struct dlm_ls *ls)
         }
 
         for (i = 0; i < ls->ls_rsbtbl_size; i++) {
-                read_lock(&ls->ls_rsbtbl[i].lock);
+                spin_lock(&ls->ls_rsbtbl[i].lock);
                 list_for_each_entry(r, &ls->ls_rsbtbl[i].list, res_hashchain) {
                         list_add(&r->res_root_list, &ls->ls_root_list);
                         dlm_hold_rsb(r);
@@ -737,7 +737,7 @@ int dlm_create_root_list(struct dlm_ls *ls)
                    but no other recovery steps should do anything with them. */
 
                 if (dlm_no_directory(ls)) {
-                        read_unlock(&ls->ls_rsbtbl[i].lock);
+                        spin_unlock(&ls->ls_rsbtbl[i].lock);
                         continue;
                 }
 
@@ -745,7 +745,7 @@ int dlm_create_root_list(struct dlm_ls *ls)
                         list_add(&r->res_root_list, &ls->ls_root_list);
                         dlm_hold_rsb(r);
                 }
-                read_unlock(&ls->ls_rsbtbl[i].lock);
+                spin_unlock(&ls->ls_rsbtbl[i].lock);
         }
  out:
         up_write(&ls->ls_root_sem);
@@ -775,7 +775,7 @@ void dlm_clear_toss_list(struct dlm_ls *ls)
         int i;
 
         for (i = 0; i < ls->ls_rsbtbl_size; i++) {
-                write_lock(&ls->ls_rsbtbl[i].lock);
+                spin_lock(&ls->ls_rsbtbl[i].lock);
                 list_for_each_entry_safe(r, safe, &ls->ls_rsbtbl[i].toss,
                                          res_hashchain) {
                         if (dlm_no_directory(ls) || !is_master(r)) {
@@ -783,7 +783,7 @@ void dlm_clear_toss_list(struct dlm_ls *ls)
                                 dlm_free_rsb(r);
                         }
                 }
-                write_unlock(&ls->ls_rsbtbl[i].lock);
+                spin_unlock(&ls->ls_rsbtbl[i].lock);
         }
 }