This is a note to let you know that I've just added the patch titled
include/linux/sched.h: don't use task->pid/tgid in
to the 3.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
include-linux-sched.h-don-t-use-task-pid-tgid-in.patch
and it can be found in the queue-3.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From e1403b8edf669ff49bbdf602cc97fefa2760cb15 Mon Sep 17 00:00:00 2001
From: Oleg Nesterov <oleg@xxxxxxxxxx>
Date: Wed, 11 Sep 2013 14:20:06 -0700
Subject: include/linux/sched.h: don't use task->pid/tgid in
same_thread_group/has_group_leader_pid
From: Oleg Nesterov <oleg@xxxxxxxxxx>
commit e1403b8edf669ff49bbdf602cc97fefa2760cb15 upstream.
task_struct->pid/tgid should go away.
1. Change same_thread_group() to use task->signal for comparison.
2. Change has_group_leader_pid(task) to compare task_pid(task) with
signal->leader_pid.
Signed-off-by: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxx>
Cc: Sergey Dyasly <dserrg@xxxxxxxxx>
Reviewed-by: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
include/linux/sched.h | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -2203,15 +2203,15 @@ static inline bool thread_group_leader(s
* all we care about is that we have a task with the appropriate
* pid, we don't actually care if we have the right task.
*/
-static inline int has_group_leader_pid(struct task_struct *p)
+static inline bool has_group_leader_pid(struct task_struct *p)
{
- return p->pid == p->tgid;
+ return task_pid(p) == p->signal->leader_pid;
}
static inline
-int same_thread_group(struct task_struct *p1, struct task_struct *p2)
+bool same_thread_group(struct task_struct *p1, struct task_struct *p2)
{
- return p1->tgid == p2->tgid;
+ return p1->signal == p2->signal;
}
static inline struct task_struct *next_thread(const struct task_struct *p)
Patches currently in stable-queue which might be from oleg@xxxxxxxxxx are
queue-3.10/__ptrace_may_access-should-not-deny-sub-threads.patch
queue-3.10/include-linux-sched.h-don-t-use-task-pid-tgid-in.patch
queue-3.10/fput-turn-list_head-delayed_fput_list-into-llist_head.patch
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