dm writecache: remove disabled code in memory_entry()

This dead branch was missed during review.  It only makes memory_entry()
more inefficient due to needless call to is_power_of_2(), etc.

Reported-by: shenghui <shhuiw@foxmail.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

diff --git a/drivers/md/dm-writecache.c b/drivers/md/dm-writecache.c
index 5f1f80d..2d50eec 100644 (file)
--- a/drivers/md/dm-writecache.c
+++ b/drivers/md/dm-writecache.c
@@ -350,10 +350,7 @@ static struct wc_memory_superblock *sb(struct dm_writecache *wc)
 
 static struct wc_memory_entry *memory_entry(struct dm_writecache *wc, struct wc_entry *e)
 {
-       if (is_power_of_2(sizeof(struct wc_entry)) && 0)
-               return &sb(wc)->entries[e - wc->entries];
-       else
-               return &sb(wc)->entries[e->index];
+       return &sb(wc)->entries[e->index];
 }
 
 static void *memory_data(struct dm_writecache *wc, struct wc_entry *e)