enable lvds 1280x800

hc

2023-11-20 0d8657dd3056063fb115946b10157477b5c70451

 kernel/fs/userfaultfd.c
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@@ -56,7 +56,7 @@
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 	/* waitqueue head for events */
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 	wait_queue_head_t event_wqh;
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 	/* a refile sequence protected by fault_pending_wqh lock */
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-	struct seqcount refile_seq;
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+	seqlock_t refile_seq;
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 	/* pseudo fd refcounting */
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 	atomic_t refcount;
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 	/* userfaultfd syscall flags */
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@@ -1060,7 +1060,7 @@
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 			 * waitqueue could become empty if this is the
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 			 * only userfault.
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 			 */
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-			write_seqcount_begin(&ctx->refile_seq);
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+			write_seqlock(&ctx->refile_seq);
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 			/*
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 			 * The fault_pending_wqh.lock prevents the uwq
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@@ -1086,7 +1086,7 @@
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 			list_del(&uwq->wq.entry);
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 			add_wait_queue(&ctx->fault_wqh, &uwq->wq);
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-			write_seqcount_end(&ctx->refile_seq);
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+			write_sequnlock(&ctx->refile_seq);
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 			/* careful to always initialize msg if ret == 0 */
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 			*msg = uwq->msg;
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@@ -1259,11 +1259,11 @@
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 	 * sure we've userfaults to wake.
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 	 */
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 	do {
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-		seq = read_seqcount_begin(&ctx->refile_seq);
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+		seq = read_seqbegin(&ctx->refile_seq);
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 		need_wakeup = waitqueue_active(&ctx->fault_pending_wqh) ||
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 			waitqueue_active(&ctx->fault_wqh);
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 		cond_resched();
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-	} while (read_seqcount_retry(&ctx->refile_seq, seq));
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+	} while (read_seqretry(&ctx->refile_seq, seq));
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 	if (need_wakeup)
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 		__wake_userfault(ctx, range);
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 }
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@@ -1941,7 +1941,7 @@
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 	init_waitqueue_head(&ctx->fault_wqh);
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 	init_waitqueue_head(&ctx->event_wqh);
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 	init_waitqueue_head(&ctx->fd_wqh);
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-	seqcount_init(&ctx->refile_seq);
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+	seqlock_init(&ctx->refile_seq);
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 }
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 SYSCALL_DEFINE1(userfaultfd, int, flags)