add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/md/dm-log.c
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@@ -415,8 +415,7 @@
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 	/*
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 	 * Work out how many "unsigned long"s we need to hold the bitset.
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 	 */
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-	bitset_size = dm_round_up(region_count,
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-				  sizeof(*lc->clean_bits) << BYTE_SHIFT);
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+	bitset_size = dm_round_up(region_count, BITS_PER_LONG);
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 	bitset_size >>= BYTE_SHIFT;
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 	lc->bitset_uint32_count = bitset_size / sizeof(*lc->clean_bits);
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@@ -616,7 +615,7 @@
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 			log_clear_bit(lc, lc->clean_bits, i);
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 	/* clear any old bits -- device has shrunk */
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-	for (i = lc->region_count; i % (sizeof(*lc->clean_bits) << BYTE_SHIFT); i++)
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+	for (i = lc->region_count; i % BITS_PER_LONG; i++)
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 		log_clear_bit(lc, lc->clean_bits, i);
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 	/* copy clean across to sync */