Hi Jens, this series contains a bunch of different BDI cleanups. The biggest item is to isolate block drivers from the BDI in preparation of changing the lifetime of the block device BDI in a follow up series. Changes since v6: - add a new blk_queue_update_readahead helper and use it in stacking drivers - improve another commit log Changes since v5: - improve a commit message - improve the stable_writes deprecation printk - drop "drbd: remove RB_CONGESTED_REMOTE" - drop a few hunks that add a local variable in a otherwise unchanged file due to changes in the previous revisions - keep updating ->io_pages in queue_max_sectors_store - set an optimal I/O size in aoe - inherit the optimal I/O size in bcache Changes since v4: - add a back a prematurely removed assignment in dm-table.c - pick up a few reviews from Johannes that got lost Changes since v3: - rebased on the lasted block tree, which has some of the prep changes merged - extend the ->ra_pages changes to ->io_pages - move initializing ->ra_pages and ->io_pages for block devices to blk_register_queue Changes since v2: - fix a rw_page return value check - fix up various changelogs Changes since v1: - rebased to the for-5.9/block-merge branch - explicitly set the readahead to 0 for ubifs, vboxsf and mtd - split the zram block_device operations - let rw_page users fall back to bios in swap_readpage Diffstat: