diff options
Diffstat (limited to 'fs/ocfs2/dlm/dlmmaster.c')
| -rw-r--r-- | fs/ocfs2/dlm/dlmmaster.c | 34 |
1 files changed, 23 insertions, 11 deletions
diff --git a/fs/ocfs2/dlm/dlmmaster.c b/fs/ocfs2/dlm/dlmmaster.c index 0a2813947853..0aa4b043f4de 100644 --- a/fs/ocfs2/dlm/dlmmaster.c +++ b/fs/ocfs2/dlm/dlmmaster.c @@ -318,6 +318,21 @@ static void dlm_init_mle(struct dlm_master_list_entry *mle, __dlm_mle_attach_hb_events(dlm, mle); } +void __dlm_unlink_mle(struct dlm_ctxt *dlm, struct dlm_master_list_entry *mle) +{ + assert_spin_locked(&dlm->spinlock); + assert_spin_locked(&dlm->master_lock); + + if (!list_empty(&mle->list)) + list_del_init(&mle->list); +} + +void __dlm_insert_mle(struct dlm_ctxt *dlm, struct dlm_master_list_entry *mle) +{ + assert_spin_locked(&dlm->master_lock); + + list_add(&mle->list, &dlm->master_list); +} /* returns 1 if found, 0 if not */ static int dlm_find_mle(struct dlm_ctxt *dlm, @@ -420,8 +435,7 @@ static void dlm_mle_release(struct kref *kref) assert_spin_locked(&dlm->master_lock); /* remove from list if not already */ - if (!list_empty(&mle->list)) - list_del_init(&mle->list); + __dlm_unlink_mle(dlm, mle); /* detach the mle from the domain node up/down events */ __dlm_mle_detach_hb_events(dlm, mle); @@ -843,7 +857,7 @@ lookup: alloc_mle = NULL; dlm_init_mle(mle, DLM_MLE_MASTER, dlm, res, NULL, 0); set_bit(dlm->node_num, mle->maybe_map); - list_add(&mle->list, &dlm->master_list); + __dlm_insert_mle(dlm, mle); /* still holding the dlm spinlock, check the recovery map * to see if there are any nodes that still need to be @@ -1575,7 +1589,7 @@ way_up_top: // "add the block.\n"); dlm_init_mle(mle, DLM_MLE_BLOCK, dlm, NULL, name, namelen); set_bit(request->node_idx, mle->maybe_map); - list_add(&mle->list, &dlm->master_list); + __dlm_insert_mle(dlm, mle); response = DLM_MASTER_RESP_NO; } else { // mlog(0, "mle was found\n"); @@ -1967,7 +1981,7 @@ ok: assert->node_idx, rr, extra_ref, mle->inuse); dlm_print_one_mle(mle); } - list_del_init(&mle->list); + __dlm_unlink_mle(dlm, mle); __dlm_mle_detach_hb_events(dlm, mle); __dlm_put_mle(mle); if (extra_ref) { @@ -3159,10 +3173,8 @@ static int dlm_add_migration_mle(struct dlm_ctxt *dlm, tmp->master = master; atomic_set(&tmp->woken, 1); wake_up(&tmp->wq); - /* remove it from the list so that only one - * mle will be found */ - list_del_init(&tmp->list); - /* this was obviously WRONG. mle is uninited here. should be tmp. */ + /* remove it so that only one mle will be found */ + __dlm_unlink_mle(dlm, tmp); __dlm_mle_detach_hb_events(dlm, tmp); ret = DLM_MIGRATE_RESPONSE_MASTERY_REF; mlog(0, "%s:%.*s: master=%u, newmaster=%u, " @@ -3181,7 +3193,7 @@ static int dlm_add_migration_mle(struct dlm_ctxt *dlm, mle->master = master; /* do this for consistency with other mle types */ set_bit(new_master, mle->maybe_map); - list_add(&mle->list, &dlm->master_list); + __dlm_insert_mle(dlm, mle); return ret; } @@ -3264,7 +3276,7 @@ top: * list_head while in list_for_each_safe */ __dlm_mle_detach_hb_events(dlm, mle); spin_lock(&mle->spinlock); - list_del_init(&mle->list); + __dlm_unlink_mle(dlm, mle); atomic_set(&mle->woken, 1); spin_unlock(&mle->spinlock); wake_up(&mle->wq); |