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Message-ID: <87a72v7042.fsf_-_@x220.int.ebiederm.org>
Date: Tue, 28 Apr 2020 16:48:29 -0500
From: ebiederm@...ssion.com (Eric W. Biederman)
To: LKML <linux-kernel@...r.kernel.org>
Cc: Oleg Nesterov <oleg@...hat.com>,
Linus Torvalds <torvalds@...ux-foundation.org>,
Thomas Gleixner <tglx@...utronix.de>
Subject: [PATCH 2/4] posix-cpu-timer: Unify the now redundant code in lookup_task
Now that both !thread paths through lookup_task call
thread_group_leader, unify them into the single test at the end of
lookup_task.
This unification just makes it clear what is happening in the gettime
special case of lookup_task.
Signed-off-by: "Eric W. Biederman" <ebiederm@...ssion.com>
---
kernel/time/posix-cpu-timers.c | 15 +++++++--------
1 file changed, 7 insertions(+), 8 deletions(-)
diff --git a/kernel/time/posix-cpu-timers.c b/kernel/time/posix-cpu-timers.c
index e4051e417bcb..b7f972fb115e 100644
--- a/kernel/time/posix-cpu-timers.c
+++ b/kernel/time/posix-cpu-timers.c
@@ -66,14 +66,13 @@ static struct task_struct *lookup_task(const pid_t pid, bool thread,
if (thread)
return same_thread_group(p, current) ? p : NULL;
- if (gettime) {
- /*
- * For clock_gettime(PROCESS) the task does not need to be
- * the actual group leader. task->signal gives
- * access to the group's clock.
- */
- return (p == current || thread_group_leader(p)) ? p : NULL;
- }
+ /*
+ * For clock_gettime(PROCESS) the task does not need to be
+ * the actual group leader. task->signal gives
+ * access to the group's clock.
+ */
+ if (gettime && (p == current))
+ return p;
/*
* For processes require that p is group leader.
--
2.20.1
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