From c7be761a8163d2f1ac0b606c21e4316b7abc5af7 Mon Sep 17 00:00:00 2001 From: David Teigland Date: Wed, 7 Jan 2009 16:50:41 -0600 Subject: 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 --- fs/dlm/recover.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'fs/dlm/recover.c') 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); } } -- cgit