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[00/12] ext4,jbd2: cleanup journal load and initialization process

Message ID 20230704134233.110812-1-yi.zhang@huaweicloud.com
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Series ext4,jbd2: cleanup journal load and initialization process | expand

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Zhang Yi July 4, 2023, 1:42 p.m. UTC 
From: Zhang Yi <yi.zhang@huawei.com>

Hello,

This patch set cleanup the journal load and initialization process
(discussed and suggested by Ted in [1]). Firstly, move reading of the
journal superblock from jbd2_journal_load() and jbd2_journal_wipe()
early to journal_init_common(), and completely drop the kludgy call of
journal_get_superblock() in jbd2_journal_check_used_features(). Then
cleanup the ext4_get_journal() and ext4_get_dev_journal(), making their
initialization process and error handling process more clear, and return
proper errno if some bad happens. Finally rename those two functions to
jbd2_open_{dev,inode}_journal. This patch set has passed
'kvm-xfstests -g auto'.

[1] https://lore.kernel.org/linux-ext4/20230617185057.GA343628@mit.edu/

Thanks,
Yi.

Zhang Yi (12):
  jbd2: move load_superblock() dependent functions
  jbd2: move load_superblock() into journal_init_common()
  jbd2: don't load superblock in jbd2_journal_check_used_features()
  jbd2: checking valid features early in journal_get_superblock()
  jbd2: open code jbd2_verify_csum_type() helper
  jbd2: cleanup load_superblock()
  jbd2: add fast_commit space check
  jbd2: cleanup journal_init_common()
  jbd2: drop useless error tag in jbd2_journal_wipe()
  jbd2: jbd2_journal_init_{dev,inode} return proper error return value
  ext4: cleanup ext4_get_dev_journal() and ext4_get_journal()
  ext4: ext4_get_{dev}_journal return proper error value

 fs/ext4/super.c    | 154 ++++++++-------
 fs/jbd2/journal.c  | 474 ++++++++++++++++++++++-----------------------
 fs/ocfs2/journal.c |   8 +-
 3 files changed, 308 insertions(+), 328 deletions(-)