[CIFS] Add support for suspend

cifsd had been preventing software suspend from completing.

Signed-off-by: pavel@suse.de
Signed-off-by: Steve French <sfrench@us.ibm.com>  lightly modified
---

 fs/cifs/CHANGES   |    3 ++-
 fs/cifs/cifsfs.c  |    4 ++++
 fs/cifs/connect.c |    2 ++
 3 files changed, 8 insertions(+), 1 deletions(-)

1 files changed, 4 insertions, 0 deletions

diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index d77abe236a67..43fb2aafa528 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -784,6 +784,8 @@ static int cifs_oplock_thread(void * dummyarg)
 
         oplockThread = current;
         do {
+                if(try_to_freeze()) 
+                        continue;
                 set_current_state(TASK_INTERRUPTIBLE);
                 
                 schedule_timeout(1*HZ);  
@@ -848,6 +850,8 @@ static int cifs_dnotify_thread(void * dummyarg)
 
         dnotifyThread = current;
         do {
+                if(try_to_freeze())
+                        continue;
                 set_current_state(TASK_INTERRUPTIBLE);
                 schedule_timeout(39*HZ);
         } while(!signal_pending(current));