add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/md/persistent-data/dm-btree-internal.h
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@@ -38,7 +38,7 @@
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 struct btree_node {
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 	struct node_header header;
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-	__le64 keys[0];
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+	__le64 keys[];
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 } __attribute__((packed, aligned(8)));
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@@ -68,7 +68,7 @@
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 };
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 void init_ro_spine(struct ro_spine *s, struct dm_btree_info *info);
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-int exit_ro_spine(struct ro_spine *s);
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+void exit_ro_spine(struct ro_spine *s);
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 int ro_step(struct ro_spine *s, dm_block_t new_child);
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 void ro_pop(struct ro_spine *s);
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 struct btree_node *ro_node(struct ro_spine *s);