FAILED: patch "[PATCH] dm: fix printk() rate limiting code" failed to apply to 4.12-stable tree

The patch below does not apply to the 4.12-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From: Bart Van Assche <[email protected]>
Date: Wed, 9 Aug 2017 11:32:11 -0700
Subject: [PATCH] dm: fix printk() rate limiting code

Using the same rate limiting state for different kinds of messages is wrong because this can cause a high frequency message to suppress a report of a low frequency message. Hence use a unique rate limiting state per message type.

index 8298670757e9..d669fddd9290 100644
@@ -27,16 +27,6 @@
 
 #define DM_MSG_PREFIX "core"
 
-#ifdef CONFIG_PRINTK
-/*
- * ratelimit state to be used in DMXXX_LIMIT().
- */
-DEFINE_RATELIMIT_STATE(dm_ratelimit_state,
-		       DEFAULT_RATELIMIT_INTERVAL,
-		       DEFAULT_RATELIMIT_BURST);
-EXPORT_SYMBOL(dm_ratelimit_state);
-#endif
-
 /*
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