bcache: Kill unused freelist

This was originally added as at optimization that for various reasons isn't
needed anymore, but it does add a lot of nasty corner cases (and it was
responsible for some recently fixed bugs). Just get rid of it now.

Signed-off-by: Kent Overstreet <kmo@daterainc.com>

1 files changed, 2 insertions, 4 deletions

diff --git a/include/trace/events/bcache.h b/include/trace/events/bcache.h
index 8fc2a7134d3c..c9c3c044b32f 100644
--- a/include/trace/events/bcache.h
+++ b/include/trace/events/bcache.h
@@ -446,7 +446,6 @@ TRACE_EVENT(bcache_alloc_fail,
                 __field(dev_t,          dev                     )
                 __field(unsigned,       free                    )
                 __field(unsigned,       free_inc                )
-                __field(unsigned,       unused                  )
                 __field(unsigned,       blocked                 )
         ),
 
@@ -454,13 +453,12 @@ TRACE_EVENT(bcache_alloc_fail,
                 __entry->dev            = ca->bdev->bd_dev;
                 __entry->free           = fifo_used(&ca->free[reserve]);
                 __entry->free_inc       = fifo_used(&ca->free_inc);
-                __entry->unused         = fifo_used(&ca->unused);
                 __entry->blocked        = atomic_read(&ca->set->prio_blocked);
         ),
 
-        TP_printk("alloc fail %d,%d free %u free_inc %u unused %u blocked %u",
+        TP_printk("alloc fail %d,%d free %u free_inc %u blocked %u",
                   MAJOR(__entry->dev), MINOR(__entry->dev), __entry->free,
-                  __entry->free_inc, __entry->unused, __entry->blocked)
+                  __entry->free_inc, __entry->blocked)
 );
 
 /* Background writeback */