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signal: make recalc_sigpending_tsk() return bool

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recalc_sigpending_tsk() already behaves like a boolean function.  Let's
actually declare it as such too.

Link: http://lkml.kernel.org/r/20180602103653.18181-12-christian@brauner.io
Signed-off-by: Christian Brauner <christian@brauner.io>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: James Morris <james.morris@microsoft.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Christian Brauner 2018-08-21 22:00:30 -07:00 committed by Linus Torvalds
parent 938696a829
commit 09ae854edb
1 changed files with 4 additions and 3 deletions
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7
kernel/signal.c
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@ -138,20 +138,21 @@ static inline bool has_pending_signals(sigset_t *signal, sigset_t *blocked)
#define PENDING(p,b) has_pending_signals(&(p)->signal, (b)) #define PENDING(p,b) has_pending_signals(&(p)->signal, (b))
static int recalc_sigpending_tsk(struct task_struct *t) static bool recalc_sigpending_tsk(struct task_struct *t)
{ {
if ((t->jobctl & JOBCTL_PENDING_MASK) || if ((t->jobctl & JOBCTL_PENDING_MASK) ||
PENDING(&t->pending, &t->blocked) || PENDING(&t->pending, &t->blocked) ||
PENDING(&t->signal->shared_pending, &t->blocked)) { PENDING(&t->signal->shared_pending, &t->blocked)) {
set_tsk_thread_flag(t, TIF_SIGPENDING); set_tsk_thread_flag(t, TIF_SIGPENDING);
return 1; return true;
} }
/* /*
* We must never clear the flag in another thread, or in current * We must never clear the flag in another thread, or in current
* when it's possible the current syscall is returning -ERESTART*. * when it's possible the current syscall is returning -ERESTART*.
* So we don't clear it here, and only callers who know they should do. * So we don't clear it here, and only callers who know they should do.
*/ */
return 0; return false;
} }
/* /*