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[CIFS] Do not allow signals in cifs_demultiplex_thread 

Switch from send_sig to force_sig and do not allow signal for this
background thread (the signal is needed to wakeup the thread when
blocked in the network stack).

Signed-off-by: Jeff Layton <jlayton@readhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Jeff 2007-06-25 22:16:35 +00:00 committed by Steve French
parent ffdd6e4d16
commit 5d9c720678
1 changed files with 7 additions and 6 deletions
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13
fs/cifs/connect.c
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@ -348,7 +348,6 @@ cifs_demultiplex_thread(struct TCP_Server_Info *server)
int isMultiRsp;
int reconnect;
allow_signal(SIGKILL);
current->flags |= PF_MEMALLOC;
server->tsk = current; /* save process info to wake at shutdown */
cFYI(1, ("Demultiplex PID: %d", current->pid));
@ -2089,7 +2088,7 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
always wake up processes blocked in
tcp in recv_mesg then we could remove the
send_sig call */
send_sig(SIGKILL,srvTcp->tsk,1);
force_sig(SIGKILL,srvTcp->tsk);
tsk = srvTcp->tsk;
if(tsk)
kthread_stop(tsk);
@ -2106,9 +2105,11 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
temp_rc = CIFSSMBLogoff(xid, pSesInfo);
/* if the socketUseCount is now zero */
if ((temp_rc == -ESHUTDOWN) &&
(pSesInfo->server) && (pSesInfo->server->tsk)) {
(pSesInfo->server) &&
(pSesInfo->server->tsk)) {
struct task_struct *tsk;
send_sig(SIGKILL,pSesInfo->server->tsk,1);
force_sig(SIGKILL,
pSesInfo->server->tsk);
tsk = pSesInfo->server->tsk;
if (tsk)
kthread_stop(tsk);
@ -3364,9 +3365,9 @@ cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb)
FreeXid(xid);
return 0;
} else if (rc == -ESHUTDOWN) {
cFYI(1,("Waking up socket by sending it signal"));
cFYI(1,("Waking up socket by sending signal"));
if (cifsd_task) {
send_sig(SIGKILL,cifsd_task,1);
force_sig(SIGKILL,cifsd_task);
kthread_stop(cifsd_task);
}
rc = 0;