svn commit: r254287 - head/sys/kern

[John Baldwin]

Author: jhb
Date: Tue Aug 13 18:45:58 2013
New Revision: 254287
URL: http://svnweb.freebsd.org/changeset/base/254287

Log:
  Some small cleanups to the fixes in r180340:
  - Set NOTE_TRACKERR before running filt_proc().  If the knote did not
    have NOTE_FORK set in fflags when registered, then the TRACKERR event
    could miss being posted.
  - Don't pass the pid in to filt_proc() for NOTE_FORK events.  The special
    handling for pids is done knote_fork() directly and no longer in
    filt_proc().
  
  MFC after:	2 weeks

Modified:
  head/sys/kern/kern_event.c

Modified: head/sys/kern/kern_event.c
==============================================================================
--- head/sys/kern/kern_event.c	Tue Aug 13 18:39:36 2013	(r254286)
+++ head/sys/kern/kern_event.c	Tue Aug 13 18:45:58 2013	(r254287)
@@ -477,7 +477,7 @@ knote_fork(struct knlist *list, int pid)
 		 */
 		if ((kn->kn_sfflags & NOTE_TRACK) == 0) {
 			kn->kn_status |= KN_HASKQLOCK;
-			if (kn->kn_fop->f_event(kn, NOTE_FORK | pid))
+			if (kn->kn_fop->f_event(kn, NOTE_FORK))
 				KNOTE_ACTIVATE(kn, 1);
 			kn->kn_status &= ~KN_HASKQLOCK;
 			KQ_UNLOCK(kq);
@@ -505,10 +505,10 @@ knote_fork(struct knlist *list, int pid)
 		kev.data = kn->kn_id;		/* parent */
 		kev.udata = kn->kn_kevent.udata;/* preserve udata */
 		error = kqueue_register(kq, &kev, NULL, 0);
-		if (kn->kn_fop->f_event(kn, NOTE_FORK | pid))
-			KNOTE_ACTIVATE(kn, 0);
 		if (error)
 			kn->kn_fflags |= NOTE_TRACKERR;
+		if (kn->kn_fop->f_event(kn, NOTE_FORK))
+			KNOTE_ACTIVATE(kn, 0);
 		KQ_LOCK(kq);
 		kn->kn_status &= ~KN_INFLUX;
 		KQ_UNLOCK_FLUX(kq);