104 static void hold_task_mempolicy(struct proc_maps_private *priv)  in hold_task_mempolicy()  argument
106 	struct task_struct *task = priv->task;  in hold_task_mempolicy()
109 	priv->task_mempolicy = get_task_policy(task);  in hold_task_mempolicy()
110 	mpol_get(priv->task_mempolicy);  in hold_task_mempolicy()
113 static void release_task_mempolicy(struct proc_maps_private *priv)  in release_task_mempolicy()  argument
115 	mpol_put(priv->task_mempolicy);  in release_task_mempolicy()
118 static void hold_task_mempolicy(struct proc_maps_private *priv)  in hold_task_mempolicy()  argument
121 static void release_task_mempolicy(struct proc_maps_private *priv)  in release_task_mempolicy()  argument
178 	struct proc_maps_private *priv = m->private;  in m_start()  local
187 	priv->task = get_proc_task(priv->inode);  in m_start()
188 	if (!priv->task)  in m_start()
191 	mm = priv->mm;  in m_start()
193 		put_task_struct(priv->task);  in m_start()
194 		priv->task = NULL;  in m_start()
200 		put_task_struct(priv->task);  in m_start()
201 		priv->task = NULL;  in m_start()
205 	hold_task_mempolicy(priv);  in m_start()
206 	priv->tail_vma = get_gate_vma(mm);  in m_start()
212 	return priv->tail_vma;  in m_start()
217 	struct proc_maps_private *priv = m->private;  in m_next()  local
220 	if (vma == priv->tail_vma)  in m_next()
225 		next = priv->tail_vma;  in m_next()
234 	struct proc_maps_private *priv = m->private;  in m_stop()  local
235 	struct mm_struct *mm = priv->mm;  in m_stop()
237 	if (!priv->task)  in m_stop()
240 	release_task_mempolicy(priv);  in m_stop()
243 	put_task_struct(priv->task);  in m_stop()
244 	priv->task = NULL;  in m_stop()
250 	struct proc_maps_private *priv = __seq_open_private(file, ops, psize);  in proc_maps_open()  local
252 	if (!priv)  in proc_maps_open()
255 	priv->inode = inode;  in proc_maps_open()
256 	priv->mm = proc_mem_open(inode, PTRACE_MODE_READ);  in proc_maps_open()
257 	if (IS_ERR(priv->mm)) {  in proc_maps_open()
258 		int err = PTR_ERR(priv->mm);  in proc_maps_open()
270 	struct proc_maps_private *priv = seq->private;  in proc_map_release()  local
272 	if (priv->mm)  in proc_map_release()
273 		mmdrop(priv->mm);  in proc_map_release()
923 	struct proc_maps_private *priv = m->private;  in show_smaps_rollup()  local
930 	priv->task = get_proc_task(priv->inode);  in show_smaps_rollup()
931 	if (!priv->task)  in show_smaps_rollup()
934 	mm = priv->mm;  in show_smaps_rollup()
946 	hold_task_mempolicy(priv);  in show_smaps_rollup()
948 	for (vma = priv->mm->mmap; vma;) {  in show_smaps_rollup()
960 				release_task_mempolicy(priv);  in show_smaps_rollup()
1017 	show_vma_header_prefix(m, priv->mm->mmap ? priv->mm->mmap->vm_start : 0,  in show_smaps_rollup()
1024 	release_task_mempolicy(priv);  in show_smaps_rollup()
1030 	put_task_struct(priv->task);  in show_smaps_rollup()
1031 	priv->task = NULL;  in show_smaps_rollup()
1052 	struct proc_maps_private *priv;  in smaps_rollup_open()  local
1054 	priv = kzalloc(sizeof(*priv), GFP_KERNEL_ACCOUNT);  in smaps_rollup_open()
1055 	if (!priv)  in smaps_rollup_open()
1058 	ret = single_open(file, show_smaps_rollup, priv);  in smaps_rollup_open()
1062 	priv->inode = inode;  in smaps_rollup_open()
1063 	priv->mm = proc_mem_open(inode, PTRACE_MODE_READ);  in smaps_rollup_open()
1064 	if (IS_ERR(priv->mm)) {  in smaps_rollup_open()
1065 		ret = PTR_ERR(priv->mm);  in smaps_rollup_open()
1074 	kfree(priv);  in smaps_rollup_open()
1081 	struct proc_maps_private *priv = seq->private;  in smaps_rollup_release()  local
1083 	if (priv->mm)  in smaps_rollup_release()
1084 		mmdrop(priv->mm);  in smaps_rollup_release()
1086 	kfree(priv);  in smaps_rollup_release()