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| author | Oleg Nesterov <oleg@redhat.com> | 2015-11-06 16:32:22 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-11-06 17:50:42 -0800 |
| commit | be0e6f290f78b84a3b21b8c8c46819c4514fe632 (patch) | |
| tree | ccf0623cfbe7b0486f08b100032465d773dcb7dd /drivers | |
| parent | 2e01fabe67ccaff1d59bda01e60a61f5fb0aa7b6 (diff) | |
| download | linux-stable-be0e6f290f78b84a3b21b8c8c46819c4514fe632.tar.gz linux-stable-be0e6f290f78b84a3b21b8c8c46819c4514fe632.tar.bz2 linux-stable-be0e6f290f78b84a3b21b8c8c46819c4514fe632.zip | |
signal: turn dequeue_signal_lock() into kernel_dequeue_signal()
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 <oleg@redhat.com>
Reviewed-by: Tejun Heo <tj@kernel.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/block/nbd.c | 15 | ||||
| -rw-r--r-- | drivers/usb/gadget/function/f_mass_storage.c | 4 |
2 files changed, 5 insertions, 14 deletions
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index 1b87623381e2..93b3f99b6865 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -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, ¤t->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, ¤t->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, ¤t->blocked, &info); - } + if (signal_pending(current)) + kernel_dequeue_signal(NULL); return 0; } diff --git a/drivers/usb/gadget/function/f_mass_storage.c b/drivers/usb/gadget/function/f_mass_storage.c index cd54e72a6c50..5ec533826621 100644 --- a/drivers/usb/gadget/function/f_mass_storage.c +++ b/drivers/usb/gadget/function/f_mass_storage.c @@ -2345,7 +2345,6 @@ static void fsg_disable(struct usb_function *f) static void handle_exception(struct fsg_common *common) { - siginfo_t info; int i; struct fsg_buffhd *bh; enum fsg_state old_state; @@ -2357,8 +2356,7 @@ static void handle_exception(struct fsg_common *common) * into a high-priority EXIT exception. */ for (;;) { - int sig = - dequeue_signal_lock(current, ¤t->blocked, &info); + int sig = kernel_dequeue_signal(NULL); if (!sig) break; if (sig != SIGUSR1) { |