->pid in dnotify

[Ulrich Drepper <drepper@redhat.com>]

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I'm not entirely sure about this change.  But it seems to be necessary.
 The dnotify code stores the PID in the file structure.  The entire
process shares the file and any signal (is it used for that?) should be
sent to the process (thread group), not the individual thread.  Also
keep in mind that threads can go away while the process (and therefore
file descriptor) remain.  And the ID of the thread can be reused.

Somebody who knows this code should take a good look.

- --
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Ulrich Drepper \    ,-----------------'   \ Mountain View, CA 94041 USA
Red Hat         `--' drepper at redhat.com `---------------------------
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--- linux/fs/dnotify.c-save	2003-04-03 10:04:03.000000000 -0800
+++ linux/fs/dnotify.c	2003-08-28 11:41:23.000000000 -0700
@@ -94,7 +94,7 @@
 		prev = &odn->dn_next;
 	}
 
-	error = f_setown(filp, current->pid, 1);
+	error = f_setown(filp, current->tgid, 1);
 	if (error)
 		goto out_free;