linux-ext4 - [PATCH v2 00/22] ext4 fast commit fixes

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Message-Id: <20201106035911.1942128-1-harshadshirwadkar@gmail.com>
Date:   Thu,  5 Nov 2020 19:58:49 -0800
From:   Harshad Shirwadkar <harshadshirwadkar@...il.com>
To:     linux-ext4@...r.kernel.org
Cc:     tytso@....edu, Harshad Shirwadkar <harshadshirwadkar@...il.com>
Subject: [PATCH v2 00/22] ext4 fast commit fixes

ext4: fast commit fixes

This patch series adds several code-only (no on disk format changes)
fixes for the fast commit code. I verified that there were no
regressions introduced by this patch series in xfstests auto and log
groups in fast_commit and 4k configurations.

Changes since V1:

- Broke couple of misc patches into separate patches
- Added a few new fixes:
   - atomic update of mount flags
   - no fast commits on aborted journal
   - Dropped confusing fast commit mount options
- Dropped jbd2_fc_init()

Signed-off-by: Harshad Shirwadkar <harshadshirwadkar@...il.com>

Harshad Shirwadkar (22):
  ext4: describe fast_commit feature flags
  ext4: mark fc ineligible if inode gets evictied due to mem pressure
  ext4: drop redundant calls ext4_fc_track_range
  ext4: fixup ext4_fc_track_* functions' signature
  jbd2: rename j_maxlen to j_total_len and add jbd2_journal_max_txn_bufs
  ext4: clean up the JBD2 API that initializes fast commits
  jbd2: drop jbd2_fc_init documentation
  jbd2: don't use state lock during commit path
  jbd2: don't pass tid to jbd2_fc_end_commit_fallback()
  jbd2: add todo for a fast commit  performance optimization
  jbd2: don't touch buffer state until it is filled
  jbd2: don't read journal->j_commit_sequence without taking a lock
  ext4: dedpulicate the code to wait on inode that's being committed
  ext4: fix code documentatioon
  ext4: mark buf dirty before submitting fast commit buffer
  ext4: remove unnecessary fast commit calls from ext4_file_mmap
  ext4: fix inode dirty check in case of fast commits
  ext4: disable fast commit with data journalling
  ext4: issue fsdev cache flush before starting fast commit
  ext4: make s_mount_flags modifications atomic
  jbd2: don't start fast commit on aborted journal
  ext4: cleanup fast commit mount options

 Documentation/filesystems/ext4/journal.rst |   6 +
 Documentation/filesystems/ext4/super.rst   |   7 +
 Documentation/filesystems/journalling.rst  |   6 +-
 fs/ext4/ext4.h                             |  66 +++++---
 fs/ext4/extents.c                          |   7 +-
 fs/ext4/fast_commit.c                      | 169 +++++++++++----------
 fs/ext4/fast_commit.h                      |   6 +-
 fs/ext4/file.c                             |   6 +-
 fs/ext4/fsmap.c                            |   2 +-
 fs/ext4/fsync.c                            |   2 +-
 fs/ext4/inode.c                            |  19 +--
 fs/ext4/mballoc.c                          |   4 +-
 fs/ext4/namei.c                            |  61 ++++----
 fs/ext4/super.c                            |  43 +++---
 fs/jbd2/commit.c                           |  11 +-
 fs/jbd2/journal.c                          | 138 +++++++++--------
 fs/jbd2/recovery.c                         |   6 +-
 fs/ocfs2/journal.c                         |   2 +-
 include/linux/jbd2.h                       |  23 ++-
 include/trace/events/ext4.h                |  10 +-
 20 files changed, 328 insertions(+), 266 deletions(-)

-- 
2.29.1.341.ge80a0c044ae-goog