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[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>
hifive-unleashed-5.1
Steve French 2005-08-18 09:41:43 -07:00
parent f191401f59
commit 8d0d50948b
1 changed files with 29 additions and 3 deletions
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32
fs/cifs/cifsfs.c
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@ -59,6 +59,8 @@ unsigned int ntlmv2_support = 0;
unsigned int sign_CIFS_PDUs = 1;
extern struct task_struct * oplockThread; /* remove sparse warning */
struct task_struct * oplockThread = NULL;
extern struct task_struct * dnotifyThread; /* remove sparse warning */
struct task_struct * dnotifyThread = NULL;
unsigned int CIFSMaxBufSize = CIFS_MAX_MSGSIZE;
module_param(CIFSMaxBufSize, int, 0);
MODULE_PARM_DESC(CIFSMaxBufSize,"Network buffer size (not including header). Default: 16384 Range: 8192 to 130048");
@ -73,6 +75,7 @@ module_param(cifs_max_pending, int, 0);
MODULE_PARM_DESC(cifs_max_pending,"Simultaneous requests to server. Default: 50 Range: 2 to 256");
static DECLARE_COMPLETION(cifs_oplock_exited);
static DECLARE_COMPLETION(cifs_dnotify_exited);
extern mempool_t *cifs_sm_req_poolp;
extern mempool_t *cifs_req_poolp;
@ -838,6 +841,19 @@ static int cifs_oplock_thread(void * dummyarg)
complete_and_exit (&cifs_oplock_exited, 0);
}
static int cifs_dnotify_thread(void * dummyarg)
{
daemonize("cifsdnotifyd");
allow_signal(SIGTERM);
dnotifyThread = current;
do {
set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(39*HZ);
} while(!signal_pending(current));
complete_and_exit (&cifs_dnotify_exited, 0);
}
static int __init
init_cifs(void)
{
@ -884,10 +900,16 @@ init_cifs(void)
if (!rc) {
rc = (int)kernel_thread(cifs_oplock_thread, NULL,
CLONE_FS | CLONE_FILES | CLONE_VM);
if(rc > 0)
return 0;
else
if(rc > 0) {
rc = (int)kernel_thread(cifs_dnotify_thread, NULL,
CLONE_FS | CLONE_FILES | CLONE_VM);
if(rc > 0)
return 0;
else
cERROR(1,("error %d create dnotify thread", rc));
} else {
cERROR(1,("error %d create oplock thread",rc));
}
}
cifs_destroy_request_bufs();
}
@ -916,6 +938,10 @@ exit_cifs(void)
send_sig(SIGTERM, oplockThread, 1);
wait_for_completion(&cifs_oplock_exited);
}
if(dnotifyThread) {
send_sig(SIGTERM, dnotifyThread, 1);
wait_for_completion(&cifs_dnotify_exited);
}
}
MODULE_AUTHOR("Steve French <sfrench@us.ibm.com>");