diff options
Diffstat (limited to 'fs/cifs/transport.c')
| -rw-r--r-- | fs/cifs/transport.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c index 36b2ece43403..e9abb41aa89b 100644 --- a/fs/cifs/transport.c +++ b/fs/cifs/transport.c @@ -527,6 +527,7 @@ wait_for_free_credits(struct TCP_Server_Info *server, const int num_credits, int *credits; int optype; long int t; + int scredits = server->credits; if (timeout < 0) t = MAX_JIFFY_OFFSET; @@ -624,12 +625,18 @@ wait_for_free_credits(struct TCP_Server_Info *server, const int num_credits, /* update # of requests on the wire to server */ if ((flags & CIFS_TIMEOUT_MASK) != CIFS_BLOCKING_OP) { *credits -= num_credits; + scredits = *credits; server->in_flight += num_credits; if (server->in_flight > server->max_in_flight) server->max_in_flight = server->in_flight; *instance = server->reconnect_instance; } spin_unlock(&server->req_lock); + + trace_smb3_add_credits(server->CurrentMid, + server->hostname, scredits, -(num_credits)); + cifs_dbg(FYI, "%s: remove %u credits total=%d\n", + __func__, num_credits, scredits); break; } } @@ -649,10 +656,14 @@ wait_for_compound_request(struct TCP_Server_Info *server, int num, const int flags, unsigned int *instance) { int *credits; + int scredits, sin_flight; credits = server->ops->get_credits_field(server, flags & CIFS_OP_MASK); spin_lock(&server->req_lock); + scredits = *credits; + sin_flight = server->in_flight; + if (*credits < num) { /* * Return immediately if not too many requests in flight since @@ -660,6 +671,10 @@ wait_for_compound_request(struct TCP_Server_Info *server, int num, */ if (server->in_flight < num - *credits) { spin_unlock(&server->req_lock); + trace_smb3_insufficient_credits(server->CurrentMid, + server->hostname, scredits, sin_flight); + cifs_dbg(FYI, "%s: %d requests in flight, needed %d total=%d\n", + __func__, sin_flight, num, scredits); return -ENOTSUPP; } } |