git: da39a100dbfe - main - sleepq_check_ast_sc_locked(): update comment

The branch main has been updated by kib:

URL: https://cgit.FreeBSD.org/src/commit/?id=da39a100dbfe60da6512a8b230386b1105c42445

commit da39a100dbfe60da6512a8b230386b1105c42445
Author:     Konstantin Belousov <kib@FreeBSD.org>
AuthorDate: 2022-08-12 00:19:36 +0000
Commit:     Konstantin Belousov <kib@FreeBSD.org>
CommitDate: 2022-08-20 17:33:17 +0000

    sleepq_check_ast_sc_locked(): update comment
    
    The relock order is important not only for a signal delivery, but also
    for the suspension requests.
    
    Reviewed by:    markj
    Sponsored by:   The FreeBSD Foundation
    MFC after:      3 days
    Differential revision:  https://reviews.freebsd.org/D36207
---
 sys/kern/subr_sleepqueue.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/kern/subr_sleepqueue.c b/sys/kern/subr_sleepqueue.c
index b5245879a05f..112dbbf93960 100644
--- a/sys/kern/subr_sleepqueue.c
+++ b/sys/kern/subr_sleepqueue.c
@@ -482,7 +482,7 @@ sleepq_check_ast_sc_locked(struct thread *td, struct sleepqueue_chain *sc)
 	 * Lock the per-process spinlock prior to dropping the
 	 * PROC_LOCK to avoid a signal delivery race.
 	 * PROC_LOCK, PROC_SLOCK, and thread_lock() are
-	 * currently held in tdsendsignal().
+	 * currently held in tdsendsignal() and thread_single().
 	 */
 	PROC_SLOCK(p);
 	mtx_lock_spin(&sc->sc_lock);