[PATCH 3/6] bcache: Remove dead references to cache_readaheads

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From: Andrea Tomassetti <andrea.tomassetti-opensource@xxxxxxxx>

The cache_readaheads stat counter is not used anymore and should be

Signed-off-by: Andrea Tomassetti <andrea.tomassetti-opensource@xxxxxxxx>
Signed-off-by: Coly Li <colyli@xxxxxxx>
 Documentation/admin-guide/bcache.rst | 3 ---
 drivers/md/bcache/stats.h            | 1 -
 2 files changed, 4 deletions(-)

diff --git a/Documentation/admin-guide/bcache.rst b/Documentation/admin-guide/bcache.rst
index bb5032a99234..6fdb495ac466 100644
--- a/Documentation/admin-guide/bcache.rst
+++ b/Documentation/admin-guide/bcache.rst
@@ -508,9 +508,6 @@ cache_miss_collisions
   cache miss, but raced with a write and data was already present (usually 0
   since the synchronization for cache misses was rewritten)
-  Count of times readahead occurred.
 Sysfs - cache set
diff --git a/drivers/md/bcache/stats.h b/drivers/md/bcache/stats.h
index bd3afc856d53..21b445f8af15 100644
--- a/drivers/md/bcache/stats.h
+++ b/drivers/md/bcache/stats.h
@@ -18,7 +18,6 @@ struct cache_stats {
 	unsigned long cache_misses;
 	unsigned long cache_bypass_hits;
 	unsigned long cache_bypass_misses;
-	unsigned long cache_readaheads;
 	unsigned long cache_miss_collisions;
 	unsigned long sectors_bypassed;

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