On Mon, Apr 20, 2015 at 05:09:50PM +0200, Jan Kara wrote: > On Mon 06-04-15 15:58:02, Tejun Heo wrote: > > Currently, a bdi (backing_dev_info) embeds single wb (bdi_writeback) > > and the role of the separation is unclear. For cgroup support for > > writeback IOs, a bdi will be updated to host multiple wb's where each > > wb serves writeback IOs of a different cgroup on the bdi. To achieve > > that, a wb should carry all states necessary for servicing writeback > > IOs for a cgroup independently. > > > > This patch moves bandwidth related fields from backing_dev_info into > > bdi_writeback. > > > > * The moved fields are: bw_time_stamp, dirtied_stamp, written_stamp, > > write_bandwidth, avg_write_bandwidth, dirty_ratelimit, > > balanced_dirty_ratelimit, completions and dirty_exceeded. > > > > * writeback_chunk_size() and over_bgroup_thresh() now take @wb instead > > of @bdi. > ^^^ over_bground_thresh() > > Otherwise the patch looks good to me. You can add: Updated accordingly. > Reviewed-by: Jan Kara <jack@xxxxxxx> Thanks. -- tejun -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>