diff options
Diffstat (limited to 'fs/dlm')
| -rw-r--r-- | fs/dlm/lock.c | 70 |
1 files changed, 68 insertions, 2 deletions
diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c index 04e3f15aa0c..b5695075818 100644 --- a/fs/dlm/lock.c +++ b/fs/dlm/lock.c @@ -4000,12 +4000,70 @@ static int validate_message(struct dlm_lkb *lkb, struct dlm_message *ms) return error; } +static void send_repeat_remove(struct dlm_ls *ls, char *ms_name, int len) +{ + char name[DLM_RESNAME_MAXLEN + 1]; + struct dlm_message *ms; + struct dlm_mhandle *mh; + struct dlm_rsb *r; + uint32_t hash, b; + int rv, dir_nodeid; + + memset(name, 0, sizeof(name)); + memcpy(name, ms_name, len); + + hash = jhash(name, len, 0); + b = hash & (ls->ls_rsbtbl_size - 1); + + dir_nodeid = dlm_hash2nodeid(ls, hash); + + log_error(ls, "send_repeat_remove dir %d %s", dir_nodeid, name); + + spin_lock(&ls->ls_rsbtbl[b].lock); + rv = dlm_search_rsb_tree(&ls->ls_rsbtbl[b].keep, name, len, &r); + if (!rv) { + spin_unlock(&ls->ls_rsbtbl[b].lock); + log_error(ls, "repeat_remove on keep %s", name); + return; + } + + rv = dlm_search_rsb_tree(&ls->ls_rsbtbl[b].toss, name, len, &r); + if (!rv) { + spin_unlock(&ls->ls_rsbtbl[b].lock); + log_error(ls, "repeat_remove on toss %s", name); + return; + } + + /* use ls->remove_name2 to avoid conflict with shrink? */ + + spin_lock(&ls->ls_remove_spin); + ls->ls_remove_len = len; + memcpy(ls->ls_remove_name, name, DLM_RESNAME_MAXLEN); + spin_unlock(&ls->ls_remove_spin); + spin_unlock(&ls->ls_rsbtbl[b].lock); + + rv = _create_message(ls, sizeof(struct dlm_message) + len, + dir_nodeid, DLM_MSG_REMOVE, &ms, &mh); + if (rv) + return; + + memcpy(ms->m_extra, name, len); + ms->m_hash = hash; + + send_message(mh, ms); + + spin_lock(&ls->ls_remove_spin); + ls->ls_remove_len = 0; + memset(ls->ls_remove_name, 0, DLM_RESNAME_MAXLEN); + spin_unlock(&ls->ls_remove_spin); +} + static int receive_request(struct dlm_ls *ls, struct dlm_message *ms) { struct dlm_lkb *lkb; struct dlm_rsb *r; int from_nodeid; - int error, namelen; + int error, namelen = 0; from_nodeid = ms->m_header.h_nodeid; @@ -4073,13 +4131,21 @@ static int receive_request(struct dlm_ls *ls, struct dlm_message *ms) delayed in being sent/arriving/being processed on the dir node. Another node would repeatedly lookup up the master, and the dir node would continue returning our nodeid until our send_remove - took effect. */ + took effect. + + We send another remove message in case our previous send_remove + was lost/ignored/missed somehow. */ if (error != -ENOTBLK) { log_limit(ls, "receive_request %x from %d %d", ms->m_lkid, from_nodeid, error); } + if (namelen && error == -EBADR) { + send_repeat_remove(ls, ms->m_extra, namelen); + msleep(1000); + } + setup_stub_lkb(ls, ms); send_request_reply(&ls->ls_stub_rsb, &ls->ls_stub_lkb, error); return error; |