diff options
Diffstat (limited to 'include/linux/backing-dev-defs.h')
| -rw-r--r-- | include/linux/backing-dev-defs.h | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/include/linux/backing-dev-defs.h b/include/linux/backing-dev-defs.h index aa18c4bd43c1..9e9eafa5f5aa 100644 --- a/include/linux/backing-dev-defs.h +++ b/include/linux/backing-dev-defs.h @@ -16,12 +16,15 @@ struct dentry; * Bits in bdi_writeback.state */ enum wb_state { - WB_async_congested, /* The async (write) queue is getting full */ - WB_sync_congested, /* The sync queue is getting full */ WB_registered, /* bdi_register() was done */ WB_writeback_running, /* Writeback is in progress */ }; +enum wb_congested_state { + WB_async_congested, /* The async (write) queue is getting full */ + WB_sync_congested, /* The sync queue is getting full */ +}; + typedef int (congested_fn)(void *, int); enum wb_stat_item { @@ -34,6 +37,10 @@ enum wb_stat_item { #define WB_STAT_BATCH (8*(1+ilog2(nr_cpu_ids))) +struct bdi_writeback_congested { + unsigned long state; /* WB_[a]sync_congested flags */ +}; + struct bdi_writeback { struct backing_dev_info *bdi; /* our parent bdi */ @@ -48,6 +55,8 @@ struct bdi_writeback { struct percpu_counter stat[NR_WB_STAT_ITEMS]; + struct bdi_writeback_congested *congested; + 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 */ @@ -84,6 +93,7 @@ struct backing_dev_info { unsigned int max_ratio, max_prop_frac; struct bdi_writeback wb; /* default writeback info for this bdi */ + struct bdi_writeback_congested wb_congested; struct device *dev; |
