diff options
| author | Eric Paris <eparis@redhat.com> | 2009-05-21 17:01:37 -0400 |
|---|---|---|
| committer | Eric Paris <eparis@redhat.com> | 2009-06-11 14:57:53 -0400 |
| commit | a2d8bc6cb4a3024661baf877242f123787d0c054 (patch) | |
| tree | 4ff3f93877a8992d5383c14fb6012ab9b1954660 /fs/notify/group.c | |
| parent | 3c5119c05d624f95f4967d16b38c9624b816bdb9 (diff) | |
| download | lwn-a2d8bc6cb4a3024661baf877242f123787d0c054.tar.gz lwn-a2d8bc6cb4a3024661baf877242f123787d0c054.zip | |
fsnotify: generic notification queue and waitq
inotify needs to do asyc notification in which event information is stored
on a queue until the listener is ready to receive it. This patch
implements a generic notification queue for inotify (and later fanotify) to
store events to be sent at a later time.
Signed-off-by: Eric Paris <eparis@redhat.com>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'fs/notify/group.c')
| -rw-r--r-- | fs/notify/group.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/notify/group.c b/fs/notify/group.c index a29d2fa67927..0e1677144bc5 100644 --- a/fs/notify/group.c +++ b/fs/notify/group.c @@ -91,6 +91,9 @@ static void fsnotify_get_group(struct fsnotify_group *group) */ void fsnotify_final_destroy_group(struct fsnotify_group *group) { + /* clear the notification queue of all events */ + fsnotify_flush_notify(group); + if (group->ops->free_group_priv) group->ops->free_group_priv(group); @@ -214,6 +217,12 @@ struct fsnotify_group *fsnotify_obtain_group(unsigned int group_num, __u32 mask, group->group_num = group_num; group->mask = mask; + mutex_init(&group->notification_mutex); + INIT_LIST_HEAD(&group->notification_list); + init_waitqueue_head(&group->notification_waitq); + group->q_len = 0; + group->max_events = UINT_MAX; + spin_lock_init(&group->mark_lock); atomic_set(&group->num_marks, 0); INIT_LIST_HEAD(&group->mark_entries); |