Commit 2db7c581 authored by Jeff Layton's avatar Jeff Layton Committed by Steve French

cifs: send an NT_CANCEL request when a process is signalled

Use the new send_nt_cancel function to send an NT_CANCEL when the
process is delivered a fatal signal. This is a "best effort" enterprise
however, so don't bother to check the return code. There's nothing we
can reasonably do if it fails anyway.
Reviewed-by: default avatarPavel Shilovsky <piastryyy@gmail.com>
Reviewed-by: default avatarSuresh Jayaraman <sjayaraman@suse.de>
Signed-off-by: default avatarJeff Layton <jlayton@redhat.com>
Signed-off-by: default avatarSteve French <sfrench@us.ibm.com>
parent 1be912dd
......@@ -570,20 +570,25 @@ SendReceive2(const unsigned int xid, struct cifsSesInfo *ses,
#endif
mutex_unlock(&ses->server->srv_mutex);
cifs_small_buf_release(in_buf);
if (rc < 0)
if (rc < 0) {
cifs_small_buf_release(in_buf);
goto out;
}
if (long_op == CIFS_ASYNC_OP)
if (long_op == CIFS_ASYNC_OP) {
cifs_small_buf_release(in_buf);
goto out;
}
rc = wait_for_response(ses->server, midQ);
if (rc != 0) {
send_nt_cancel(ses->server, in_buf, midQ);
spin_lock(&GlobalMid_Lock);
if (midQ->midState == MID_REQUEST_SUBMITTED) {
midQ->callback = DeleteMidQEntry;
spin_unlock(&GlobalMid_Lock);
cifs_small_buf_release(in_buf);
atomic_dec(&ses->server->inFlight);
wake_up(&ses->server->request_q);
return rc;
......@@ -591,6 +596,8 @@ SendReceive2(const unsigned int xid, struct cifsSesInfo *ses,
spin_unlock(&GlobalMid_Lock);
}
cifs_small_buf_release(in_buf);
rc = sync_mid_result(midQ, ses->server);
if (rc != 0) {
atomic_dec(&ses->server->inFlight);
......@@ -734,6 +741,7 @@ SendReceive(const unsigned int xid, struct cifsSesInfo *ses,
rc = wait_for_response(ses->server, midQ);
if (rc != 0) {
send_nt_cancel(ses->server, in_buf, midQ);
spin_lock(&GlobalMid_Lock);
if (midQ->midState == MID_REQUEST_SUBMITTED) {
/* no longer considered to be "in-flight" */
......@@ -943,6 +951,7 @@ SendReceiveBlockingLock(const unsigned int xid, struct cifsTconInfo *tcon,
rc = wait_for_response(ses->server, midQ);
if (rc) {
send_nt_cancel(ses->server, in_buf, midQ);
spin_lock(&GlobalMid_Lock);
if (midQ->midState == MID_REQUEST_SUBMITTED) {
/* no longer considered to be "in-flight" */
......
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