[CIFS] Change Notify support part 1 - add dnotify thread for processing
notify responses. Signed-off-by: Asser Ferno <asser@diku.dk> Signed-off-by: Steve French <sfrench@us.ibm.com>
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@ -59,6 +59,8 @@ unsigned int ntlmv2_support = 0;
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unsigned int sign_CIFS_PDUs = 1;
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extern struct task_struct * oplockThread; /* remove sparse warning */
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struct task_struct * oplockThread = NULL;
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extern struct task_struct * dnotifyThread; /* remove sparse warning */
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struct task_struct * dnotifyThread = NULL;
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unsigned int CIFSMaxBufSize = CIFS_MAX_MSGSIZE;
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module_param(CIFSMaxBufSize, int, 0);
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MODULE_PARM_DESC(CIFSMaxBufSize,"Network buffer size (not including header). Default: 16384 Range: 8192 to 130048");
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@ -73,6 +75,7 @@ module_param(cifs_max_pending, int, 0);
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MODULE_PARM_DESC(cifs_max_pending,"Simultaneous requests to server. Default: 50 Range: 2 to 256");
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static DECLARE_COMPLETION(cifs_oplock_exited);
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static DECLARE_COMPLETION(cifs_dnotify_exited);
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extern mempool_t *cifs_sm_req_poolp;
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extern mempool_t *cifs_req_poolp;
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@ -838,6 +841,19 @@ static int cifs_oplock_thread(void * dummyarg)
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complete_and_exit (&cifs_oplock_exited, 0);
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}
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static int cifs_dnotify_thread(void * dummyarg)
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{
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daemonize("cifsdnotifyd");
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allow_signal(SIGTERM);
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dnotifyThread = current;
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do {
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set_current_state(TASK_INTERRUPTIBLE);
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schedule_timeout(39*HZ);
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} while(!signal_pending(current));
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complete_and_exit (&cifs_dnotify_exited, 0);
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}
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static int __init
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init_cifs(void)
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{
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@ -884,10 +900,16 @@ init_cifs(void)
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if (!rc) {
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rc = (int)kernel_thread(cifs_oplock_thread, NULL,
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CLONE_FS | CLONE_FILES | CLONE_VM);
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if(rc > 0)
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return 0;
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else
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if(rc > 0) {
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rc = (int)kernel_thread(cifs_dnotify_thread, NULL,
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CLONE_FS | CLONE_FILES | CLONE_VM);
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if(rc > 0)
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return 0;
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else
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cERROR(1,("error %d create dnotify thread", rc));
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} else {
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cERROR(1,("error %d create oplock thread",rc));
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}
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}
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cifs_destroy_request_bufs();
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}
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@ -916,6 +938,10 @@ exit_cifs(void)
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send_sig(SIGTERM, oplockThread, 1);
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wait_for_completion(&cifs_oplock_exited);
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}
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if(dnotifyThread) {
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send_sig(SIGTERM, dnotifyThread, 1);
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wait_for_completion(&cifs_dnotify_exited);
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}
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}
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MODULE_AUTHOR("Steve French <sfrench@us.ibm.com>");
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