diff options
Diffstat (limited to 'fs/dlm/lock.c')
| -rw-r--r-- | fs/dlm/lock.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c index 7b309231eebd..98d9c5a4be00 100644 --- a/fs/dlm/lock.c +++ b/fs/dlm/lock.c @@ -4752,20 +4752,32 @@ static void _receive_message(struct dlm_ls *ls, const struct dlm_message *ms, static void dlm_receive_message(struct dlm_ls *ls, const struct dlm_message *ms, int nodeid) { - if (dlm_locking_stopped(ls)) { +try_again: + read_lock(&ls->ls_requestqueue_lock); + if (test_bit(LSFL_RECV_MSG_BLOCKED, &ls->ls_flags)) { /* If we were a member of this lockspace, left, and rejoined, other nodes may still be sending us messages from the lockspace generation before we left. */ if (WARN_ON_ONCE(!ls->ls_generation)) { + read_unlock(&ls->ls_requestqueue_lock); log_limit(ls, "receive %d from %d ignore old gen", le32_to_cpu(ms->m_type), nodeid); return; } + read_unlock(&ls->ls_requestqueue_lock); + write_lock(&ls->ls_requestqueue_lock); + /* recheck because we hold writelock now */ + if (!test_bit(LSFL_RECV_MSG_BLOCKED, &ls->ls_flags)) { + write_unlock_bh(&ls->ls_requestqueue_lock); + goto try_again; + } + dlm_add_requestqueue(ls, nodeid, ms); + write_unlock(&ls->ls_requestqueue_lock); } else { - dlm_wait_requestqueue(ls); _receive_message(ls, ms, 0); + read_unlock(&ls->ls_requestqueue_lock); } } |