add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/md/dm-ioctl.c
..
..
@@ -1435,11 +1435,12 @@
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 		hc->new_map = NULL;
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 	}
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-	param->flags &= ~DM_INACTIVE_PRESENT_FLAG;
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-
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-	__dev_status(hc->md, param);
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 	md = hc->md;
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 	up_write(&_hash_lock);
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+
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+	param->flags &= ~DM_INACTIVE_PRESENT_FLAG;
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+	__dev_status(md, param);
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+
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 	if (old_map) {
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 		dm_sync_table(md);
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 		dm_table_destroy(old_map);