[PATCH 0/2] btrfs-progs: add lone extent defragging support

[Qu Wenruo <wqu@suse.com>]

This the progs support for the new kernel defrag parameters on lone file
extents.

This adds 2 new fine tunning parameters, --lone-ratio and
--lone-wasted-bytes.

The ratio is between [0, 65536], and wasted bytes is between
[0, U32_MAX], but in reality the value only makes sense below
max file extent size (for both compressed and regular extents).
Any value higher than max file extent size would mostly disable the
wasted bytes check (as it would always be false).

The end user interface is not yet deteremined, especially for the ratio
(RATIO/65536 is too trikcy for most end users).
But it is already enough to address the lone trimed file extent case
mentioned in the kernel patchset.

Qu Wenruo (2):
  btrfs-progs: defrag: sync the new lone extent fine-tunning from kernel
  btrfs-progs: cmds/filesystem: fine-tune lone file extents defragging

 Documentation/btrfs-filesystem.rst | 18 ++++++++++
 cmds/filesystem.c                  | 53 ++++++++++++++++++++++++++++--
 kernel-shared/uapi/btrfs.h         | 26 +++++++++++++--
 3 files changed, 91 insertions(+), 6 deletions(-)

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2.43.0