enable docker ppp

hc

2023-12-09 95099d4622f8cb224d94e314c7a8e0df60b13f87

 kernel/drivers/md/dm-thin-metadata.h
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@@ -230,6 +230,13 @@
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  */
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 void dm_pool_issue_prefetches(struct dm_pool_metadata *pmd);
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+/* Pre-commit callback */
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+typedef int (*dm_pool_pre_commit_fn)(void *context);
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+
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+void dm_pool_register_pre_commit_callback(struct dm_pool_metadata *pmd,
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+					  dm_pool_pre_commit_fn fn,
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+					  void *context);
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+
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 /*----------------------------------------------------------------*/
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 #endif