diff options
| -rw-r--r-- | fs/cifs/transport.c | 110 |
1 files changed, 17 insertions, 93 deletions
diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c index 15059c7ef2ae..c41c9c4f0a79 100644 --- a/fs/cifs/transport.c +++ b/fs/cifs/transport.c @@ -318,48 +318,17 @@ static int allocate_mid(struct cifsSesInfo *ses, struct smb_hdr *in_buf, return 0; } -static int wait_for_response(struct cifsSesInfo *ses, - struct mid_q_entry *midQ, - unsigned long timeout, - unsigned long time_to_wait) +static int +wait_for_response(struct TCP_Server_Info *server, struct mid_q_entry *midQ) { - unsigned long curr_timeout; - - for (;;) { - curr_timeout = timeout + jiffies; - wait_event_timeout(ses->server->response_q, - midQ->midState != MID_REQUEST_SUBMITTED, timeout); - - if (time_after(jiffies, curr_timeout) && - (midQ->midState == MID_REQUEST_SUBMITTED) && - ((ses->server->tcpStatus == CifsGood) || - (ses->server->tcpStatus == CifsNew))) { - - unsigned long lrt; + int error; - /* We timed out. Is the server still - sending replies ? */ - spin_lock(&GlobalMid_Lock); - lrt = ses->server->lstrp; - spin_unlock(&GlobalMid_Lock); + error = wait_event_killable(server->response_q, + midQ->midState != MID_REQUEST_SUBMITTED); + if (error < 0) + return -ERESTARTSYS; - /* Calculate time_to_wait past last receive time. - Although we prefer not to time out if the - server is still responding - we will time - out if the server takes more than 15 (or 45 - or 180) seconds to respond to this request - and has not responded to any request from - other threads on the client within 10 seconds */ - lrt += time_to_wait; - if (time_after(jiffies, lrt)) { - /* No replies for time_to_wait. */ - cERROR(1, "server not responding"); - return -1; - } - } else { - return 0; - } - } + return 0; } @@ -433,7 +402,6 @@ SendReceive2(const unsigned int xid, struct cifsSesInfo *ses, int rc = 0; int long_op; unsigned int receive_len; - unsigned long timeout; struct mid_q_entry *midQ; struct smb_hdr *in_buf = iov[0].iov_base; @@ -500,33 +468,12 @@ SendReceive2(const unsigned int xid, struct cifsSesInfo *ses, if (rc < 0) goto out; - if (long_op == CIFS_STD_OP) - timeout = 15 * HZ; - else if (long_op == CIFS_VLONG_OP) /* e.g. slow writes past EOF */ - timeout = 180 * HZ; - else if (long_op == CIFS_LONG_OP) - timeout = 45 * HZ; /* should be greater than - servers oplock break timeout (about 43 seconds) */ - else if (long_op == CIFS_ASYNC_OP) - goto out; - else if (long_op == CIFS_BLOCKING_OP) - timeout = 0x7FFFFFFF; /* large, but not so large as to wrap */ - else { - cERROR(1, "unknown timeout flag %d", long_op); - rc = -EIO; + if (long_op == CIFS_ASYNC_OP) goto out; - } - - /* wait for 15 seconds or until woken up due to response arriving or - due to last connection to this server being unmounted */ - if (signal_pending(current)) { - /* if signal pending do not hold up user for full smb timeout - but we still give response a chance to complete */ - timeout = 2 * HZ; - } - /* No user interrupts in wait - wreaks havoc with performance */ - wait_for_response(ses, midQ, timeout, 10 * HZ); + rc = wait_for_response(ses->server, midQ); + if (rc != 0) + goto out; rc = sync_mid_result(midQ, ses->server); if (rc != 0) { @@ -604,7 +551,6 @@ SendReceive(const unsigned int xid, struct cifsSesInfo *ses, { int rc = 0; unsigned int receive_len; - unsigned long timeout; struct mid_q_entry *midQ; if (ses == NULL) { @@ -668,33 +614,12 @@ SendReceive(const unsigned int xid, struct cifsSesInfo *ses, if (rc < 0) goto out; - if (long_op == CIFS_STD_OP) - timeout = 15 * HZ; - /* wait for 15 seconds or until woken up due to response arriving or - due to last connection to this server being unmounted */ - else if (long_op == CIFS_ASYNC_OP) - goto out; - else if (long_op == CIFS_VLONG_OP) /* writes past EOF can be slow */ - timeout = 180 * HZ; - else if (long_op == CIFS_LONG_OP) - timeout = 45 * HZ; /* should be greater than - servers oplock break timeout (about 43 seconds) */ - else if (long_op == CIFS_BLOCKING_OP) - timeout = 0x7FFFFFFF; /* large but no so large as to wrap */ - else { - cERROR(1, "unknown timeout flag %d", long_op); - rc = -EIO; + if (long_op == CIFS_ASYNC_OP) goto out; - } - if (signal_pending(current)) { - /* if signal pending do not hold up user for full smb timeout - but we still give response a chance to complete */ - timeout = 2 * HZ; - } - - /* No user interrupts in wait - wreaks havoc with performance */ - wait_for_response(ses, midQ, timeout, 10 * HZ); + rc = wait_for_response(ses->server, midQ); + if (rc != 0) + goto out; rc = sync_mid_result(midQ, ses->server); if (rc != 0) { @@ -915,8 +840,7 @@ SendReceiveBlockingLock(const unsigned int xid, struct cifsTconInfo *tcon, } } - /* Wait 5 seconds for the response. */ - if (wait_for_response(ses, midQ, 5 * HZ, 5 * HZ) == 0) { + if (wait_for_response(ses->server, midQ) == 0) { /* We got the response - restart system call. */ rstart = 1; } |