Merge with /pub/scm/linux/kernel/git/sfrench/cifs-2.6.git/

[~andy/linux] / fs / cifs / cifsfs.c

diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 1f97d39100ee51ed707eb12d0353c09035cf23aa..877095a1192ad8e13b7bffe6e041ab578346ec46 100644 (file)
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -405,6 +405,34 @@ static struct quotactl_ops cifs_quotactl_ops = {
 };
 #endif
 
+static void cifs_umount_begin(struct super_block * sblock)
+{
+       struct cifs_sb_info *cifs_sb;
+       struct cifsTconInfo * tcon;
+
+       cifs_sb = CIFS_SB(sblock);
+       if(cifs_sb == NULL)
+               return;
+
+       tcon = cifs_sb->tcon;
+       if(tcon == NULL)
+               return;
+       down(&tcon->tconSem);
+       if (atomic_read(&tcon->useCount) == 1)
+               tcon->tidStatus = CifsExiting;
+       up(&tcon->tconSem);
+
+       if(tcon->ses && tcon->ses->server)
+       {
+               cERROR(1,("wake up tasks now - umount begin not complete"));
+               wake_up_all(&tcon->ses->server->request_q);
+       }
+/* BB FIXME - finish add checks for tidStatus BB */
+
+       return;
+}
+       
+
 static int cifs_remount(struct super_block *sb, int *flags, char *data)
 {
        *flags |= MS_NODIRATIME;
@@ -422,7 +450,7 @@ struct super_operations cifs_super_ops = {
    unless later we add lazy close of inodes or unless the kernel forgets to call
    us with the same number of releases (closes) as opens */
        .show_options = cifs_show_options,
-/*    .umount_begin   = cifs_umount_begin, *//* consider adding in the future */
+/*     .umount_begin   = cifs_umount_begin, */ /* BB finish in the future */
        .remount_fs = cifs_remount,
 };
 
@@ -788,11 +816,9 @@ static int cifs_oplock_thread(void * dummyarg)
 
        oplockThread = current;
        do {
-               if(try_to_freeze()) 
+               if (try_to_freeze()) 
                        continue;
-               set_current_state(TASK_INTERRUPTIBLE);
                
-               schedule_timeout(1*HZ);  
                spin_lock(&GlobalMid_Lock);
                if(list_empty(&GlobalOplock_Q)) {
                        spin_unlock(&GlobalMid_Lock);
@@ -841,6 +867,8 @@ static int cifs_oplock_thread(void * dummyarg)
                                }
                        } else
                                spin_unlock(&GlobalMid_Lock);
+                       set_current_state(TASK_INTERRUPTIBLE);
+                       schedule_timeout(1);  /* yield in case q were corrupt */
                }
        } while(!signal_pending(current));
        oplockThread = NULL;
@@ -873,6 +901,10 @@ init_cifs(void)
        INIT_LIST_HEAD(&GlobalSMBSessionList);
        INIT_LIST_HEAD(&GlobalTreeConnectionList);
        INIT_LIST_HEAD(&GlobalOplock_Q);
+#ifdef CONFIG_CIFS_EXPERIMENTAL
+       INIT_LIST_HEAD(&GlobalDnotifyReqList);
+       INIT_LIST_HEAD(&GlobalDnotifyRsp_Q);
+#endif 
 /*
  *  Initialize Global counters
  */