/* * Copyright (C) 2008 Red Hat, Inc., Eric Paris * * 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 #include #include #include #include #include #include #include "fsnotify.h" #include /* * 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); 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) { /* * Stop queueing new events. The code below is careful enough to not * require this but fanotify needs to stop queuing events even before * fsnotify_destroy_group() is called and this makes the other callers * of fsnotify_destroy_group() to see the same behavior. */ fsnotify_group_stop_queueing(group); /* clear all inode marks for this group, attach them to destroy_list */ fsnotify_detach_group_marks(group); /* * Wait for fsnotify_mark_srcu period to end and free all marks in * destroy_list */ fsnotify_mark_destroy_list(); /* * Since we have waited for fsnotify_mark_srcu in * fsnotify_mark_destroy_list() there can be no outstanding event * notification against this group. So clearing the notification queue * of all events is reliable now. */ fsnotify_flush_notify(group); /* * Destroy overflow event (we cannot use fsnotify_destroy_event() as * that deliberately ignores overflow events. */ if (group->overflow_event) group->ops->free_event(group->overflow_event); fsnotify_put_group(group); } /* * Get reference to a group. */ void fsnotify_get_group(struct fsnotify_group *group) { atomic_inc(&group->refcnt); } /* * Drop a reference to a group. Free it if it's through. */ void fsnotify_put_group(struct fsnotify_group *group) { if (atomic_dec_and_test(&group->refcnt)) fsnotify_final_destroy_group(group); } /* * Create a new fsnotify_group and hold a reference for the group returned. */ struct fsnotify_group *fsnotify_alloc_group(const struct fsnotify_ops *ops) { struct fsnotify_group *group; group = kzalloc(sizeof(struct fsnotify_group), GFP_KERNEL); if (!group) return ERR_PTR(-ENOMEM); /* set to 0 when there a no external references to this group */ atomic_set(&group->refcnt, 1); atomic_set(&group->num_marks, 0); spin_lock_init(&group->notification_lock); INIT_LIST_HEAD(&group->notification_list); init_waitqueue_head(&group->notification_waitq); group->max_events = UINT_MAX; mutex_init(&group->mark_mutex); INIT_LIST_HEAD(&group->marks_list); group->ops = ops; return group; } int fsnotify_fasync(int fd, struct file *file, int on) { struct fsnotify_group *group = file->private_data; return fasync_helper(fd, file, on, &group->fsn_fa) >= 0 ? 0 : -EIO; } td>mode:
authorRoger Shimizu <rogershimizu@gmail.com>2017-01-30 20:07:29 +0900
committerGregory CLEMENT <gregory.clement@free-electrons.com>2017-01-31 12:19:32 +0100
commit81917bad86a66f2bdcb12b4c10ab1bf333ed25ec (patch)
tree3d56cb771fc5f0a37412e62f99aacc6d21a646c0 /sound/pci/oxygen/ak4396.h
parent0c744ea4f77d72b3dcebb7a8f2684633ec79be88 (diff)
ARM: dts: orion5x-lschl: Fix model name
Model name should be consistent with legacy device file, so that user can migrate their system from legacy device support to device-tree safely. Legacy device file is currently removed, but it can be found on 4.8 or previous version of linux: arch/arm/mach-orion5x/ls-chl-setup.c Fixes: f94f268979a2 ("ARM: dts: orion5x: convert ls-chl to FDT") Cc: Ashley Hughes <ashley.hughes@blueyonder.co.uk> Signed-off-by: Roger Shimizu <rogershimizu@gmail.com> Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Diffstat (limited to 'sound/pci/oxygen/ak4396.h')