linux-imx

/*

 *  Copyright (C) 2008 Red Hat, Inc., Eric Paris <eparis@redhat.com>

 *

 *  This program is free software; you can redistribute it and/or modify

 *  it under the terms of the GNU General Public License as published by

 *  the Free Software Foundation; either version 2, or (at your option)

 *  any later version.

 *

 *  This program is distributed in the hope that it will be useful,

 *  but WITHOUT ANY WARRANTY; without even the implied warranty of

 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 *  GNU General Public License for more details.

 *

 *  You should have received a copy of the GNU General Public License

 *  along with this program; see the file COPYING.  If not, write to

 *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.

 */

​

#include <linux/list.h>

#include <linux/mutex.h>

#include <linux/slab.h>

#include <linux/srcu.h>

#include <linux/rculist.h>

#include <linux/wait.h>

#include <linux/memcontrol.h>

​

#include <linux/fsnotify_backend.h>

#include "fsnotify.h"

​

#include <linux/atomic.h>

​

/*

 * Final freeing of a group

 */

static void fsnotify_final_destroy_group(struct fsnotify_group *group)

{

    if (group->ops->free_group_priv)

        group->ops->free_group_priv(group);

​

    mem_cgroup_put(group->memcg);

​

    kfree(group);

}

​

/*

 * Stop queueing new events for this group. Once this function returns

 * fsnotify_add_event() will not add any new events to the group's queue.

 */

void fsnotify_group_stop_queueing(struct fsnotify_group *group)

{

    spin_lock(&group->notification_lock);

    group->shutdown = true;

    spin_unlock(&group->notification_lock);

}

​

/*

 * Trying to get rid of a group. Remove all marks, flush all events and release

 * the group reference.

 * Note that another thread calling fsnotify_clear_marks_by_group() may still

 * hold a ref to the group.

 */

void fsnotify_destroy_group(struct fsnotify_group *group)

{