[patch V4 1/2] signal: Hand SIGQUEUE_PREALLOC flag to __sigqueue_alloc()

[Thomas Gleixner]

There is no point in having the conditional at the callsite.

Just hand in the allocation mode flag to __sigqueue_alloc() and use it to
initialize sigqueue::flags.

No functional change.

Signed-off-by: Thomas Gleixner <t...@linutronix.de>
---
 kernel/signal.c |   17 +++++++----------
 1 file changed, 7 insertions(+), 10 deletions(-)

--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -410,7 +410,8 @@ void task_join_group_stop(struct task_st
  *   appropriate lock must be held to stop the target task from exiting
  */
 static struct sigqueue *
-__sigqueue_alloc(int sig, struct task_struct *t, gfp_t flags, int 
override_rlimit)
+__sigqueue_alloc(int sig, struct task_struct *t, gfp_t gfp_flags,
+                int override_rlimit, const unsigned int sigqueue_flags)
 {
        struct sigqueue *q = NULL;
        struct user_struct *user;
@@ -432,7 +433,7 @@ static struct sigqueue *
        rcu_read_unlock();
 
        if (override_rlimit || likely(sigpending <= task_rlimit(t, 
RLIMIT_SIGPENDING))) {
-               q = kmem_cache_alloc(sigqueue_cachep, flags);
+               q = kmem_cache_alloc(sigqueue_cachep, gfp_flags);
        } else {
                print_dropped_signal(sig);
        }
@@ -442,7 +443,7 @@ static struct sigqueue *
                        free_uid(user);
        } else {
                INIT_LIST_HEAD(&q->list);
-               q->flags = 0;
+               q->flags = sigqueue_flags;
                q->user = user;
        }
 
@@ -1113,7 +1114,8 @@ static int __send_signal(int sig, struct
        else
                override_rlimit = 0;
 
-       q = __sigqueue_alloc(sig, t, GFP_ATOMIC, override_rlimit);
+       q = __sigqueue_alloc(sig, t, GFP_ATOMIC, override_rlimit, 0);
+
        if (q) {
                list_add_tail(&q->list, &pending->list);
                switch ((unsigned long) info) {
@@ -1807,12 +1809,7 @@ EXPORT_SYMBOL(kill_pid);
  */
 struct sigqueue *sigqueue_alloc(void)
 {
-       struct sigqueue *q = __sigqueue_alloc(-1, current, GFP_KERNEL, 0);
-
-       if (q)
-               q->flags |= SIGQUEUE_PREALLOC;
-
-       return q;
+       return __sigqueue_alloc(-1, current, GFP_KERNEL, 0, SIGQUEUE_PREALLOC);
 }
 
 void sigqueue_free(struct sigqueue *q)