add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/md/persistent-data/dm-space-map-common.c
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@@ -190,6 +190,8 @@
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 static int sm_ll_init(struct ll_disk *ll, struct dm_transaction_manager *tm)
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 {
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+	memset(ll, 0, sizeof(struct ll_disk));
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+
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 	ll->tm = tm;
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 	ll->bitmap_info.tm = tm;
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@@ -374,10 +376,6 @@
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 			 */
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 			dm_tm_unlock(ll->tm, blk);
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 			continue;
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-
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-		} else if (r < 0) {
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-			dm_tm_unlock(ll->tm, blk);
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-			return r;
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 		}
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 		dm_tm_unlock(ll->tm, blk);