From e0a985a4b1b533311ec88c85177c45d036313f75 Mon Sep 17 00:00:00 2001 From: Kent Overstreet Date: Tue, 12 Nov 2013 13:49:10 -0800 Subject: bcache: Improve bucket_prio() calculation When deciding what order to reuse buckets we take into account both the bucket's priority (which indicates lru order) and also the amount of live data in that bucket. The way they were scaled together wasn't as correct as it could be... this patch improves and documents it. Signed-off-by: Kent Overstreet --- drivers/md/bcache/bcache.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/md/bcache/bcache.h') diff --git a/drivers/md/bcache/bcache.h b/drivers/md/bcache/bcache.h index 93b848419665..0c707e4f4eaf 100644 --- a/drivers/md/bcache/bcache.h +++ b/drivers/md/bcache/bcache.h @@ -704,7 +704,7 @@ struct bbio { }; #define BTREE_PRIO USHRT_MAX -#define INITIAL_PRIO 32768 +#define INITIAL_PRIO 32768U #define btree_bytes(c) ((c)->btree_pages * PAGE_SIZE) #define btree_blocks(b) \ -- cgit