[RFC PATCH 0/6] mm: Make more use of readahead_control [ver #2]

[David Howells]

Hi Willy,

Here's a set of patches to expand the use of the readahead_control struct,
essentially from do_sync_mmap_readahead() down.  It's on top of:

	http://git.infradead.org/users/willy/pagecache.git

Also pass file_ra_state into force_page_cache_readahead().

The bugfix for khugepaged.c is included as that code is further changed
here.

David
---
David Howells (6):
      Fix khugepaged's request size in collapse_file()
      mm: Make ondemand_readahead() take a readahead_control struct
      mm: Push readahead_control down into force_page_cache_readahead()
      mm: Pass readahead_control into page_cache_{sync,async}_readahead()
      mm: Fold ra_submit() into do_sync_mmap_readahead()
      mm: Pass a file_ra_state struct into force_page_cache_readahead()


 fs/btrfs/free-space-cache.c |  4 ++-
 fs/btrfs/ioctl.c            |  9 +++--
 fs/btrfs/relocation.c       | 10 +++---
 fs/btrfs/send.c             | 16 +++++----
 fs/ext4/dir.c               | 11 +++---
 fs/f2fs/dir.c               |  8 +++--
 include/linux/pagemap.h     |  7 ++--
 mm/fadvise.c                |  6 +++-
 mm/filemap.c                | 32 +++++++++--------
 mm/internal.h               | 14 ++------
 mm/khugepaged.c             |  4 +--
 mm/readahead.c              | 70 ++++++++++++++++++-------------------
 12 files changed, 100 insertions(+), 91 deletions(-)