fsnotify: add correlations between events
As part of the standard inotify events it includes a correlation cookie
between two dentry move operations. This patch includes the same behaviour
in fsnotify events. It is needed so that inotify userspace can be
implemented on top of fsnotify.
Signed-off-by: Eric Paris <eparis@redhat.com>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Hellwig <hch@lst.de>
diff --git a/fs/notify/fsnotify.c b/fs/notify/fsnotify.c
index 675129f..f11d75f 100644
--- a/fs/notify/fsnotify.c
+++ b/fs/notify/fsnotify.c
@@ -115,7 +115,7 @@
mask |= FS_EVENT_ON_CHILD;
fsnotify(p_inode, mask, dentry->d_inode, FSNOTIFY_EVENT_INODE,
- dentry->d_name.name);
+ dentry->d_name.name, 0);
dput(parent);
}
@@ -132,7 +132,7 @@
* out to all of the registered fsnotify_group. Those groups can then use the
* notification event in whatever means they feel necessary.
*/
-void fsnotify(struct inode *to_tell, __u32 mask, void *data, int data_is, const char *file_name)
+void fsnotify(struct inode *to_tell, __u32 mask, void *data, int data_is, const char *file_name, u32 cookie)
{
struct fsnotify_group *group;
struct fsnotify_event *event = NULL;
@@ -157,7 +157,7 @@
if (!group->ops->should_send_event(group, to_tell, mask))
continue;
if (!event) {
- event = fsnotify_create_event(to_tell, mask, data, data_is, file_name);
+ event = fsnotify_create_event(to_tell, mask, data, data_is, file_name, cookie);
/* shit, we OOM'd and now we can't tell, maybe
* someday someone else will want to do something
* here */