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Date:	Wed, 17 Aug 2011 16:46:34 +0900
From:	Kazuya Mio <>
To:	ext4 <>, Theodore Tso <>
Subject: [PATCH v2 00/12] e4defrag: fragmentation score rework and cleanups


This patch set adds the new function e2p_get_fragscore() to libe2p, that
calculates the fragmentation score. Fragmentation score shows how badly
fragmented the file might be. e4defrag uses it to determine smarter whether to
call EXT4_IOC_MOVE_EXT ioctl.

In addition, the 6th to the last is bugfix or cleanup patch.

v1 -> v2
- Fix the method of calculating fragmentation score to show the number of
  extents per specified blocks
- Remove the check of filesystem type to calculate the fragmentation score
  for the file in non-ext4 filesystem
- Drop the patch for filefrag
- Fix free blocks check to use reserved blocks by users specified by
  resuid/resgid mount option
- Add -F option to defrag a file if the fragment can get better even if
  the fragmentation score of donor file is bigger than 1

This patch set is for e2fsprogs git tree. (commit:d4c0d8e5b8)

Kazuya Mio (12):
  libe2p: Add new function e2p_get_fragscore()
  e4defrag: Remove -c option which checks the file fragmentation
  e4defrag: Remove old fragmentation score calculation code
  e4defrag: Use e2p_get_fragscore() for decision of whether to defrag
  e4defrag: Add -F option for force defrag
  e4defrag: Allow user who has read+write permission to defrag
  e4defrag: Allow user who can use reserved blocks to defrag
  e4defrag: Fix memory leak in file_defrag()
  e4defrag: Use blk64_t instead of ext4_fsblk_t
  e4defrag: Use EXT2_SUPER_MAGIC instead of EXT4_SUPER_MAGIC
  e4defrag: Fix error messages more clearly
  e4defrag: Remove unnecessary code

 lib/e2p/      |    6 
 lib/e2p/e2p.h            |    3 
 lib/e2p/fragment_score.c |  132 ++++++
 misc/         |    4 
 misc/       |   33 -
 misc/e4defrag.c          |  923 +++++------------------------------------------
 6 files changed, 262 insertions(+), 839 deletions(-)

Kazuya Mio
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