Remove the struct pid unneeded fields

PATCH In review [email protected] 1 participant 1 message Aug 10, 2007

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2007-08-10 11:48 UTC #0 lore raw

PATCH 20/20 Remove the struct pid unneeded fields

Since we've switched from using pid->nr to pid->upids->nr some fields on struct pid are no longer needed

Signed-off-by Pavel Emelyanov <[email protected]>

Cc Oleg Nesterov <[email protected]>

---

 include/linux/init_task.h |    3 ---
 include/linux/pid.h       |    3 ---
 kernel/pid.c              |    1 -
 3 files changed, 7 deletions(-)

include/linux/init_task.h renamed from include/linux/init_task.h.ve17 +0 -3

@@ -93,9 +93,6 @@ extern struct group_info init_groups;
 
 #define INIT_STRUCT_PID {						\
 	.count 		= ATOMIC_INIT(1),				\
-	.nr		= 0, 						\
-	/* Don't put this struct pid in pid_hash */			\
-	.pid_chain	= { .next = NULL, .pprev = NULL },		\
 	.tasks		= {						\
 		{ .first = &init_task.pids[PIDTYPE_PID].node },		\
 		{ .first = &init_task.pids[PIDTYPE_PGID].node },	\

include/linux/pid.h renamed from include/linux/pid.h.ve17 +0 -3

@@ -57,9 +57,6 @@ struct upid {
 struct pid
 {
 	atomic_t count;
-	/* Try to keep pid_chain in the same cacheline as nr for find_pid */
-	int nr;
-	struct hlist_node pid_chain;
 	/* lists of tasks that use this pid */
 	struct hlist_head tasks[PIDTYPE_MAX];
 	struct rcu_head rcu;

kernel/pid.c renamed from kernel/pid.c.ve17 +0 -1

@@ -259,7 +259,6 @@ struct pid *alloc_pid(struct pid_namespa
 
 	get_pid_ns(ns);
 	pid->level = ns->level;
-	pid->nr = pid->numbers[0].nr;
 	atomic_set(&pid->count, 1);
 	for (type = 0; type < PIDTYPE_MAX; ++type)
 		INIT_HLIST_HEAD(&pid->tasks[type]);