diff options
| -rw-r--r-- | fs/cifs/transport.c | 41 |
1 files changed, 24 insertions, 17 deletions
diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c index b9eb0cffa003..801726b11e1e 100644 --- a/fs/cifs/transport.c +++ b/fs/cifs/transport.c @@ -63,9 +63,6 @@ AllocMidQEntry(const struct smb_hdr *smb_buffer, struct TCP_Server_Info *server) atomic_inc(&midCount); temp->midState = MID_REQUEST_ALLOCATED; - spin_lock(&GlobalMid_Lock); - list_add_tail(&temp->qhead, &server->pending_mid_q); - spin_unlock(&GlobalMid_Lock); return temp; } @@ -75,10 +72,7 @@ DeleteMidQEntry(struct mid_q_entry *midEntry) #ifdef CONFIG_CIFS_STATS2 unsigned long now; #endif - spin_lock(&GlobalMid_Lock); midEntry->midState = MID_FREE; - list_del(&midEntry->qhead); - spin_unlock(&GlobalMid_Lock); atomic_dec(&midCount); if (midEntry->largeBuf) cifs_buf_release(midEntry->resp_buf); @@ -103,6 +97,16 @@ DeleteMidQEntry(struct mid_q_entry *midEntry) mempool_free(midEntry, cifs_mid_poolp); } +static void +delete_mid(struct mid_q_entry *mid) +{ + spin_lock(&GlobalMid_Lock); + list_del(&mid->qhead); + spin_unlock(&GlobalMid_Lock); + + DeleteMidQEntry(mid); +} + static int smb_sendv(struct TCP_Server_Info *server, struct kvec *iov, int n_vec) { @@ -308,6 +312,9 @@ static int allocate_mid(struct cifsSesInfo *ses, struct smb_hdr *in_buf, *ppmidQ = AllocMidQEntry(in_buf, ses->server); if (*ppmidQ == NULL) return -ENOMEM; + spin_lock(&GlobalMid_Lock); + list_add_tail(&(*ppmidQ)->qhead, &ses->server->pending_mid_q); + spin_unlock(&GlobalMid_Lock); return 0; } @@ -508,7 +515,7 @@ SendReceive2(const unsigned int xid, struct cifsSesInfo *ses, } } spin_unlock(&GlobalMid_Lock); - DeleteMidQEntry(midQ); + delete_mid(midQ); /* Update # of requests on wire to server */ atomic_dec(&ses->server->inFlight); wake_up(&ses->server->request_q); @@ -564,14 +571,14 @@ SendReceive2(const unsigned int xid, struct cifsSesInfo *ses, if ((flags & CIFS_NO_RESP) == 0) midQ->resp_buf = NULL; /* mark it so buf will not be freed by - DeleteMidQEntry */ + delete_mid */ } else { rc = -EIO; cFYI(1, "Bad MID state?"); } out: - DeleteMidQEntry(midQ); + delete_mid(midQ); atomic_dec(&ses->server->inFlight); wake_up(&ses->server->request_q); @@ -699,7 +706,7 @@ SendReceive(const unsigned int xid, struct cifsSesInfo *ses, } } spin_unlock(&GlobalMid_Lock); - DeleteMidQEntry(midQ); + delete_mid(midQ); /* Update # of requests on wire to server */ atomic_dec(&ses->server->inFlight); wake_up(&ses->server->request_q); @@ -755,7 +762,7 @@ SendReceive(const unsigned int xid, struct cifsSesInfo *ses, } out: - DeleteMidQEntry(midQ); + delete_mid(midQ); atomic_dec(&ses->server->inFlight); wake_up(&ses->server->request_q); @@ -863,7 +870,7 @@ SendReceiveBlockingLock(const unsigned int xid, struct cifsTconInfo *tcon, rc = cifs_sign_smb(in_buf, ses->server, &midQ->sequence_number); if (rc) { - DeleteMidQEntry(midQ); + delete_mid(midQ); mutex_unlock(&ses->server->srv_mutex); return rc; } @@ -880,7 +887,7 @@ SendReceiveBlockingLock(const unsigned int xid, struct cifsTconInfo *tcon, mutex_unlock(&ses->server->srv_mutex); if (rc < 0) { - DeleteMidQEntry(midQ); + delete_mid(midQ); return rc; } @@ -902,7 +909,7 @@ SendReceiveBlockingLock(const unsigned int xid, struct cifsTconInfo *tcon, rc = send_nt_cancel(tcon, in_buf, midQ); if (rc) { - DeleteMidQEntry(midQ); + delete_mid(midQ); return rc; } } else { @@ -914,7 +921,7 @@ SendReceiveBlockingLock(const unsigned int xid, struct cifsTconInfo *tcon, /* If we get -ENOLCK back the lock may have already been removed. Don't exit in this case. */ if (rc && rc != -ENOLCK) { - DeleteMidQEntry(midQ); + delete_mid(midQ); return rc; } } @@ -951,7 +958,7 @@ SendReceiveBlockingLock(const unsigned int xid, struct cifsTconInfo *tcon, } } spin_unlock(&GlobalMid_Lock); - DeleteMidQEntry(midQ); + delete_mid(midQ); return rc; } @@ -1001,7 +1008,7 @@ SendReceiveBlockingLock(const unsigned int xid, struct cifsTconInfo *tcon, BCC(out_buf) = le16_to_cpu(BCC_LE(out_buf)); out: - DeleteMidQEntry(midQ); + delete_mid(midQ); if (rstart && rc == -EACCES) return -ERESTARTSYS; return rc; |