bdi: remove enum wb_congested_state

enum wb_congested_state and the member 'congested' in bdi_writeback are
useless since commit a88f2096d5a2 ("remove congestion tracking
framework"), so remove it.

Link: https://lkml.kernel.org/r/20220719083349.87547-1-xiujianfeng@huawei.com
Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: NeilBrown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/include/linux/backing-dev-defs.h b/include/linux/backing-dev-defs.h
index e863c88..ae12696 100644 (file)
--- a/include/linux/backing-dev-defs.h
+++ b/include/linux/backing-dev-defs.h
@@ -28,11 +28,6 @@ enum wb_state {
        WB_start_all,           /* nr_pages == 0 (all) work pending */
 };
 
-enum wb_congested_state {
-       WB_async_congested,     /* The async (write) queue is getting full */
-       WB_sync_congested,      /* The sync queue is getting full */
-};
-
 enum wb_stat_item {
        WB_RECLAIMABLE,
        WB_WRITEBACK,
@@ -122,8 +117,6 @@ struct bdi_writeback {
        atomic_t writeback_inodes;      /* number of inodes under writeback */
        struct percpu_counter stat[NR_WB_STAT_ITEMS];
 
-       unsigned long congested;        /* WB_[a]sync_congested flags */
-
        unsigned long bw_time_stamp;    /* last time write bw is updated */
        unsigned long dirtied_stamp;
        unsigned long written_stamp;    /* pages written at bw_time_stamp */