Here is another refresh of my "remove congestion tracking" series. I removed the small tweaks to read-ahead code because they raised questions and are actually required for this series. Everything else is the same. Andrew: please drop the version of this that is currently in your tree even if you don't take this. The changes to fuse/nfs/ceph are not appropriate and I wouldn't want them to land by mistake. Thanks, NeilBrown --- NeilBrown (11): DOC: convert 'subsection' to 'section' in gfp.h MM: document and polish read-ahead code. MM: improve cleanup when ->readpages doesn't process all pages. fuse: remove reliance on bdi congestion nfs: remove reliance on bdi congestion ceph: remove reliance on bdi congestion Remove inode_congested() Remove bdi_congested() and wb_congested() and related functions f2fs: replace congestion_wait() calls with io_schedule_timeout() block/bfq-iosched.c: use "false" rather than "BLK_RW_ASYNC" Remove congestion tracking framework. Documentation/core-api/mm-api.rst | 19 ++++- Documentation/filesystems/vfs.rst | 16 ++-- block/bfq-iosched.c | 2 +- drivers/block/drbd/drbd_int.h | 3 - drivers/block/drbd/drbd_req.c | 3 +- fs/ceph/addr.c | 22 +++--- fs/ceph/super.c | 1 + fs/ceph/super.h | 1 + fs/ext2/ialloc.c | 5 -- fs/f2fs/compress.c | 4 +- fs/f2fs/data.c | 3 +- fs/f2fs/f2fs.h | 6 ++ fs/f2fs/segment.c | 8 +- fs/f2fs/super.c | 6 +- fs/fs-writeback.c | 37 --------- fs/fuse/control.c | 17 ----- fs/fuse/dev.c | 8 -- fs/fuse/file.c | 17 +++++ fs/nfs/write.c | 14 +++- fs/nilfs2/segbuf.c | 15 ---- fs/xfs/xfs_buf.c | 3 - include/linux/backing-dev-defs.h | 8 -- include/linux/backing-dev.h | 50 ------------ include/linux/fs.h | 9 ++- include/linux/nfs_fs_sb.h | 1 + include/trace/events/writeback.h | 28 ------- mm/backing-dev.c | 57 -------------- mm/fadvise.c | 5 +- mm/readahead.c | 122 ++++++++++++++++++++++++++++-- mm/vmscan.c | 21 +---- 30 files changed, 212 insertions(+), 299 deletions(-) -- Signature