add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/fs/nilfs2/alloc.c
..
..
@@ -205,7 +205,8 @@
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 	int ret;
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 	spin_lock(lock);
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-	if (prev->bh && blkoff == prev->blkoff) {
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+	if (prev->bh && blkoff == prev->blkoff &&
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+	    likely(buffer_uptodate(prev->bh))) {
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 		get_bh(prev->bh);
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 		*bhp = prev->bh;
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 		spin_unlock(lock);