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From: OGAWA Hirofumi on 16 May 2010 20:40
Hi,

Please review.

Andrew, this is the part of fatfs error ratelimit. I.e. fatfs change is
depending to this patch.

I guess this area usually is sent to you. But, if this patch
wasn't applied before fatfs change, fatfs will break.

Well, so, can I pass fatfs patch to you? Or, I should apply this to
fatfs-tree too?

Thanks.
--
OGAWA Hirofumi <hirofumi(a)mail.parknet.co.jp>


For now, all users of ratelimit_state allocates it statically, so
DEFINE_RATELIMIT_STATE() is enough. But, I want to use ratelimit_state
for fs, i.e. per super_block to suppress too many error reports.

So, this adds ratelimit_state_init() to initialize ratelimite_state
which is dynamically allocated, instead of opencoding.

Signed-off-by: OGAWA Hirofumi <hirofumi(a)mail.parknet.co.jp>
---

include/linux/ratelimit.h | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)

diff -puN include/linux/ratelimit.h~ratelimit-enhance include/linux/ratelimit.h
--- linux-2.6/include/linux/ratelimit.h~ratelimit-enhance 2010-05-17 03:44:27.000000000 +0900
+++ linux-2.6-hirofumi/include/linux/ratelimit.h 2010-05-17 03:44:27.000000000 +0900
@@ -2,7 +2,7 @@
#define _LINUX_RATELIMIT_H

#include <linux/param.h>
-#include <linux/spinlock_types.h>
+#include <linux/spinlock.h>

#define DEFAULT_RATELIMIT_INTERVAL (5 * HZ)
#define DEFAULT_RATELIMIT_BURST 10
@@ -25,6 +25,17 @@ struct ratelimit_state {
.burst = burst_init, \
}

+static inline void ratelimit_state_init(struct ratelimit_state *rs,
+ int interval, int burst)
+{
+ spin_lock_init(&rs->lock);
+ rs->interval = interval;
+ rs->burst = burst;
+ rs->printed = 0;
+ rs->missed = 0;
+ rs->begin = 0;
+}
+
extern int ___ratelimit(struct ratelimit_state *rs, const char *func);
#define __ratelimit(state) ___ratelimit(state, __func__)

_
--
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