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dm: fix printk() rate limiting code

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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.

Fixes: 71a16736a1 ("dm: use local printk ratelimit")
Cc: [email protected]
Signed-off-by: Bart Van Assche <[email protected]>
Signed-off-by: Mike Snitzer <[email protected]>
This commit is contained in:
Bart Van Assche 2017-08-09 11:32:11 -07:00 • committed by Mike Snitzer
commit 604407890e
2 changed files with 12 additions and 39 deletions
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10
drivers/md/dm.c
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@ -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
/*
* Cookies are numeric values sent with CHANGE and REMOVE
* uevents while resuming, removing or renaming the device.