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authorJeff Layton <jlayton@redhat.com>2011-01-28 15:08:28 +0300
committerSteve French <sfrench@us.ibm.com>2011-01-31 07:24:38 +0300
commit2db7c5815555d8daabf7d4ab1253ce690852c140 (patch)
treef93abfb6d900da8ebd851703784d45d2cd54600b /fs
parent1be912dde772b77aaaa21770eeabb0a7a5e297a6 (diff)
downloadlinux-2db7c5815555d8daabf7d4ab1253ce690852c140.tar.xz
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: Pavel Shilovsky <piastryyy@gmail.com> Reviewed-by: Suresh Jayaraman <sjayaraman@suse.de> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/cifs/transport.c15
1 files changed, 12 insertions, 3 deletions
diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index 9b2d0373a8a7..bdaa4aa58b03 100644
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -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" */