Commit 9cb23272 authored by Xu Qiang's avatar Xu Qiang Committed by Zhong Jinghua
Browse files

mm/sharepool: Add helper for master_list 

hulk inclusion
category: other
bugzilla: https://gitee.com/openeuler/kernel/issues/I6HRGK



----------------------------------------------

Add two Helper functions sp_add_group_master and
sp_del_group_master to manipulate master_list.

Signed-off-by: default avatarXu Qiang <xuqiang36@huawei.com>
parent 793b069d

mm/share_pool.c

+17 −10
Original line number Diff line number Diff line
@@ -264,6 +264,20 @@ struct sp_group_node { 
};

#endif



static inline void sp_add_group_master(struct sp_group_master *master)

{

	mutex_lock(&master_list_lock);

	list_add_tail(&master->list_node, &master_list);

	mutex_unlock(&master_list_lock);

}



static inline void sp_del_group_master(struct sp_group_master *master)

{

	mutex_lock(&master_list_lock);

	list_del(&master->list_node);

	mutex_unlock(&master_list_lock);

}



/* The caller should hold mmap_sem to protect master (TBD) */

static void sp_init_group_master_stat(int tgid, struct mm_struct *mm,

		struct sp_proc_stat *stat)
@@ -541,10 +555,7 @@ static int sp_init_group_master_locked(struct task_struct *tsk, struct mm_struct 
	master->mm = mm;

	sp_init_group_master_stat(tsk->tgid, mm, &master->instat);

	mm->sp_group_master = master;



	mutex_lock(&master_list_lock);

	list_add_tail(&master->list_node, &master_list);

	mutex_unlock(&master_list_lock);

	sp_add_group_master(master);



	ret = init_local_group(mm);

	if (ret)
@@ -553,9 +564,7 @@ static int sp_init_group_master_locked(struct task_struct *tsk, struct mm_struct 
	return 0;



free_master:

	mutex_lock(&master_list_lock);

	list_del(&master->list_node);

	mutex_unlock(&master_list_lock);

	sp_del_group_master(master);

	mm->sp_group_master = NULL;

	kfree(master);
@@ -4387,9 +4396,7 @@ void sp_group_post_exit(struct mm_struct *mm) 
	}

	up_write(&sp_group_sem);



	mutex_lock(&master_list_lock);

	list_del(&master->list_node);

	mutex_unlock(&master_list_lock);

	sp_del_group_master(master);



	kfree(master);

}