This series contains some random cleanups to mballoc. No function change
is intended except patch 8 may fix a potential memleak if non-used
preallocation spaces of inode could be greater than UNIT_MAX.
More details can be found in respective patches. Thanks!

v1->v2:
-Collect RVB from Jan.
-Remove 'needed' in trace_ext4_discard_preallocations.

Kemeng Shi (9):
  ext4: remove unused return value of __mb_check_buddy
  ext4: remove unused parameter group in ext4_mb_choose_next_group_*()
  ext4: remove unneeded return value of ext4_mb_release_context
  ext4: remove unused ext4_allocation_context::ac_groups_considered
  ext4: remove unused return value of ext4_mb_release
  ext4: remove unused return value of ext4_mb_release_inode_pa
  ext4: remove unused return value of ext4_mb_release_group_pa
  ext4: remove unnecessary parameter "needed" in
    ext4_discard_preallocations
  ext4: remove 'needed' in trace_ext4_discard_preallocations

 fs/ext4/ext4.h              |  4 +--
 fs/ext4/extents.c           | 10 ++++----
 fs/ext4/file.c              |  2 +-
 fs/ext4/indirect.c          |  2 +-
 fs/ext4/inode.c             |  6 ++---
 fs/ext4/ioctl.c             |  2 +-
 fs/ext4/mballoc.c           | 49 ++++++++++++++-----------------------
 fs/ext4/mballoc.h           |  1 -
 fs/ext4/move_extent.c       |  4 +--
 fs/ext4/super.c             |  2 +-
 include/trace/events/ext4.h | 11 +++------
 11 files changed, 38 insertions(+), 55 deletions(-)

-- 
2.30.0