bcache: Better full stripe scanning

The old scanning-by-stripe code burned too much CPU, this should be
better.

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

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/md/bcache/bcache.h b/drivers/md/bcache/bcache.h
index 816d07958fac..ab0b2150fed6 100644
--- a/drivers/md/bcache/bcache.h
+++ b/drivers/md/bcache/bcache.h
@@ -237,7 +237,7 @@ struct keybuf {
 
         struct rb_root          keys;
 
-#define KEYBUF_NR               100
+#define KEYBUF_NR               500
         DECLARE_ARRAY_ALLOCATOR(struct keybuf_key, freelist, KEYBUF_NR);
 };
 
@@ -273,9 +273,10 @@ struct bcache_device {
         atomic_t                detaching;
         int                     flush_done;
 
-        uint64_t                nr_stripes;
+        unsigned                nr_stripes;
         unsigned                stripe_size;
         atomic_t                *stripe_sectors_dirty;
+        unsigned long           *full_dirty_stripes;
 
         unsigned long           sectors_dirty_last;
         long                    sectors_dirty_derivative;