[PATCH 0/3] readahead improvements

["Matthew Wilcox (Oracle)" <willy@infradead.org>]

As requested, fix up readahead_expand() so as to not confuse the ondemand
algorithm.  Also make the documentation slightly better.  Dave, could you
put in some debug and check this actually works?  I don't generally test
with any filesystems that use readahead_expand(), but printing (index,
nr_to_read, lookahead_size) in page_cache_ra_unbounded() would let a human
(such as your good self) determine whether it's working approximately
as designed.

This is against linux-next 20210407.

Matthew Wilcox (Oracle) (3):
  mm/filemap: Pass the file_ra_state in the ractl
  fs: Document file_ra_state
  mm/readahead: Adjust file_ra in readahead_expand

 fs/ext4/verity.c        |  2 +-
 fs/f2fs/file.c          |  2 +-
 fs/f2fs/verity.c        |  2 +-
 include/linux/fs.h      | 24 ++++++++++++++----------
 include/linux/pagemap.h | 20 +++++++++++---------
 mm/filemap.c            |  4 ++--
 mm/internal.h           |  7 +++----
 mm/readahead.c          | 25 ++++++++++++++-----------
 8 files changed, 47 insertions(+), 39 deletions(-)

-- 
2.30.2