bdi: remove unused stuff

Two flags and one bdi_writeback field are no longer used.  Remove
them.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@fb.com>

diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h
index e488e94..2103a7f 100644 (file)
--- a/include/linux/backing-dev.h
+++ b/include/linux/backing-dev.h
@@ -28,12 +28,10 @@ struct dentry;
  * Bits in backing_dev_info.state
  */
 enum bdi_state {
-       BDI_wb_alloc,           /* Default embedded wb allocated */
        BDI_async_congested,    /* The async (write) queue is getting full */
        BDI_sync_congested,     /* The sync queue is getting full */
        BDI_registered,         /* bdi_register() was done */
        BDI_writeback_running,  /* Writeback is in progress */
-       BDI_unused,             /* Available bits start here */
 };
 
 typedef int (congested_fn)(void *, int);
@@ -50,7 +48,6 @@ enum bdi_stat_item {
 
 struct bdi_writeback {
        struct backing_dev_info *bdi;   /* our parent bdi */
-       unsigned int nr;
 
        unsigned long last_old_flush;   /* last old data flush */