[PATCH v2 00/10] btrfs: reduce memory consumption for block groups

[fdmanana@kernel.org]

From: Filipe Manana <fdmanana@suse.com>

Reduce the amount of memory used by block groups by using kmem caches
and reducing structure sizes, plus a few cleanups. Details in the
change logs.

V2: Add one extra patch that was missing, to further reduce the size
    of struct btrfs_free_space_ctl (patch 7/10).

Filipe Manana (10):
  btrfs: use a kmem_cache for block groups
  btrfs: reduce size of struct btrfs_block_group
  btrfs: use a kmem_cache for free space control structures
  btrfs: remove start field from struct btrfs_free_space_ctl
  btrfs: remove unit field from struct btrfs_free_space_ctl
  btrfs: reduce size of struct btrfs_free_space_ctl
  btrfs: remove op field from struct btrfs_free_space_ctl
  btrfs: remove block group argument from copy_free_space_cache()
  btrfs: remove unnecessary ctl argument from __btrfs_write_out_cache()
  btrfs: remove unnecessary ctl argument from write_cache_extent_entries()

 fs/btrfs/block-group.c            |  38 +++++++-
 fs/btrfs/block-group.h            |  36 ++++----
 fs/btrfs/free-space-cache.c       | 147 +++++++++++++++---------------
 fs/btrfs/free-space-cache.h       |  14 +--
 fs/btrfs/fs.h                     |   7 ++
 fs/btrfs/super.c                  |   3 +
 fs/btrfs/tests/btrfs-tests.c      |   1 +
 fs/btrfs/tests/free-space-tests.c |  24 ++---
 8 files changed, 152 insertions(+), 118 deletions(-)

-- 
2.47.2