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cifs: No need to send SIGKILL to demux_thread during umount 

There is no need to explicitly send SIGKILL to cifs_demultiplex_thread
as it is calling module_put_and_exit to exit cleanly.

socket sk_rcvtimeo is set to 7 HZ so the thread will wake up in 7 seconds and
clean itself.

Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Ashish Sangwan <a.sangwan@samsung.com>
Acked-by: Jeff Layton <jlayton@samba.org>
Signed-off-by: Steve French <smfrench@gmail.com>
This commit is contained in:
Namjae Jeon 2014-08-20 19:39:17 +09:00 committed by Steve French
parent 787aded650
commit 52a3624444
1 changed files with 0 additions and 19 deletions
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19
fs/cifs/connect.c
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@ -837,7 +837,6 @@ cifs_demultiplex_thread(void *p)
struct TCP_Server_Info *server = p; struct TCP_Server_Info *server = p;
unsigned int pdu_length; unsigned int pdu_length;
char *buf = NULL; char *buf = NULL;
struct task_struct *task_to_wake = NULL;
struct mid_q_entry *mid_entry; struct mid_q_entry *mid_entry;
current->flags |= PF_MEMALLOC; current->flags |= PF_MEMALLOC;
@ -928,19 +927,7 @@ cifs_demultiplex_thread(void *p)
if (server->smallbuf) /* no sense logging a debug message if NULL */ if (server->smallbuf) /* no sense logging a debug message if NULL */
cifs_small_buf_release(server->smallbuf); cifs_small_buf_release(server->smallbuf);
task_to_wake = xchg(&server->tsk, NULL);
clean_demultiplex_info(server); clean_demultiplex_info(server);
/* if server->tsk was NULL then wait for a signal before exiting */
if (!task_to_wake) {
set_current_state(TASK_INTERRUPTIBLE);
while (!signal_pending(current)) {
schedule();
set_current_state(TASK_INTERRUPTIBLE);
}
set_current_state(TASK_RUNNING);
}
module_put_and_exit(0); module_put_and_exit(0);
} }
@ -2063,8 +2050,6 @@ cifs_find_tcp_session(struct smb_vol *vol)
static void static void
cifs_put_tcp_session(struct TCP_Server_Info *server) cifs_put_tcp_session(struct TCP_Server_Info *server)
{ {
struct task_struct *task;
spin_lock(&cifs_tcp_ses_lock); spin_lock(&cifs_tcp_ses_lock);
if (--server->srv_count > 0) { if (--server->srv_count > 0) {
spin_unlock(&cifs_tcp_ses_lock); spin_unlock(&cifs_tcp_ses_lock);
@ -2088,10 +2073,6 @@ cifs_put_tcp_session(struct TCP_Server_Info *server)
kfree(server->session_key.response); kfree(server->session_key.response);
server->session_key.response = NULL; server->session_key.response = NULL;
server->session_key.len = 0; server->session_key.len = 0;
task = xchg(&server->tsk, NULL);
if (task)
force_sig(SIGKILL, task);
} }
static struct TCP_Server_Info * static struct TCP_Server_Info *