A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-30 19:51:31 -04:00
Code Issues Projects Releases Packages Wiki Activity

signal: turn dequeue_signal_lock() into kernel_dequeue_signal()

Browse source 
1. Rename dequeue_signal_lock() to kernel_dequeue_signal(). This
   matches another "for kthreads only" kernel_sigaction() helper.

2. Remove the "tsk" and "mask" arguments, they are always current
   and current->blocked. And it is simply wrong if tsk != current.

3. We could also remove the 3rd "siginfo_t *info" arg but it looks
   potentially useful. However we can simplify the callers if we
   change kernel_dequeue_signal() to accept info => NULL.

4. Remove _irqsave, it is never called from atomic context.

Signed-off-by: Oleg Nesterov <[email protected]>
Reviewed-by: Tejun Heo <[email protected]>
Cc: David Woodhouse <[email protected]>
Cc: Felipe Balbi <[email protected]>
Cc: Markus Pargmann <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Oleg Nesterov 2015-11-06 16:32:22 -08:00 • committed by Linus Torvalds
commit be0e6f290f
4 changed files with 12 additions and 21 deletions
Download patch file Download diff file Expand all files Collapse all files

15
drivers/block/nbd.c
View file

@ -444,9 +444,7 @@ static int nbd_thread_recv(struct nbd_device *nbd)
spin_unlock_irqrestore(&nbd->tasks_lock, flags);
if (signal_pending(current)) {
siginfo_t info;
ret = dequeue_signal_lock(current, &current->blocked, &info);
ret = kernel_dequeue_signal(NULL);
dev_warn(nbd_to_dev(nbd), "pid %d, %s, got signal %d\n",
task_pid_nr(current), current->comm, ret);
mutex_lock(&nbd->tx_lock);
@ -560,11 +558,8 @@ static int nbd_thread_send(void *data)
!list_empty(&nbd->waiting_queue));
if (signal_pending(current)) {
siginfo_t info;
int ret;
int ret = kernel_dequeue_signal(NULL);
ret = dequeue_signal_lock(current, &current->blocked,
&info);
dev_warn(nbd_to_dev(nbd), "pid %d, %s, got signal %d\n",
task_pid_nr(current), current->comm, ret);
mutex_lock(&nbd->tx_lock);
@ -592,10 +587,8 @@ static int nbd_thread_send(void *data)
spin_unlock_irqrestore(&nbd->tasks_lock, flags);
/* Clear maybe pending signals */
if (signal_pending(current)) {
siginfo_t info;
dequeue_signal_lock(current, &current->blocked, &info);
}
if (signal_pending(current))
kernel_dequeue_signal(NULL);
return 0;
}