On Thu, 3 Oct 2013 05:48:35 -0500 [email protected] wrote: > From: Shirish Pargaonkar <[email protected]> > > Do not send SMB2 Logoff command when reconnecting, the way smb1 > code base works. > > Also, no need to wait for a credit for an echo command when one is already > in flight. > > Without these changes, umount command hangs if the server is unresponsive > e.g. hibernating. > > > Signed-off-by: Shirish Pargaonkar <[email protected]> > --- > fs/cifs/smb2pdu.c | 6 ++++++ > fs/cifs/transport.c | 9 +++++++-- > 2 files changed, 13 insertions(+), 2 deletions(-) > > diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c > index eba0efd..edccb52 100644 > --- a/fs/cifs/smb2pdu.c > +++ b/fs/cifs/smb2pdu.c > @@ -687,6 +687,10 @@ SMB2_logoff(const unsigned int xid, struct cifs_ses *ses) > else > return -EIO; > > + /* no need to send SMB logoff if uid already closed due to reconnect */ > + if (ses->need_reconnect) > + goto smb2_session_already_dead; > + > rc = small_smb2_init(SMB2_LOGOFF, NULL, (void **) &req); > if (rc) > return rc; > @@ -701,6 +705,8 @@ SMB2_logoff(const unsigned int xid, struct cifs_ses *ses) > * No tcon so can't do > * cifs_stats_inc(&tcon->stats.smb2_stats.smb2_com_fail[SMB2...]); > */ > + > +smb2_session_already_dead: > return rc; > } > > diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c > index 6fdcb1b..800b938 100644 > --- a/fs/cifs/transport.c > +++ b/fs/cifs/transport.c > @@ -410,8 +410,13 @@ static int > wait_for_free_request(struct TCP_Server_Info *server, const int timeout, > const int optype) > { > - return wait_for_free_credits(server, timeout, > - server->ops->get_credits_field(server, optype)); > + int *val; > + > + val = server->ops->get_credits_field(server, optype); > + /* Since an echo is already inflight, no need to wait to send another */ > + if (*val <= 0 && optype == CIFS_ECHO_OP) > + return -EAGAIN; > + return wait_for_free_credits(server, timeout, val); > } > > static int allocate_mid(struct cifs_ses *ses, struct smb_hdr *in_buf,
Looks reasonable. Acked-by: Jeff Layton <[email protected]> -- To unsubscribe from this list: send the line "unsubscribe linux-cifs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
