linux-ext4 - [RFC 0/6] ext4: fast_commit fixes and some minor cleanups

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Date:   Mon, 31 Jan 2022 20:46:49 +0530
From:   Ritesh Harjani <riteshh@...ux.ibm.com>
To:     linux-ext4@...r.kernel.org
Cc:     linux-fsdevel@...r.kernel.org, "Theodore Ts'o" <tytso@....edu>,
        Jan Kara <jack@...e.cz>,
        Harshad Shirwadkar <harshadshirwadkar@...il.com>,
        Ritesh Harjani <riteshh@...ux.ibm.com>
Subject: [RFC 0/6] ext4: fast_commit fixes and some minor cleanups

Hello,

Please find this small patch series which fixes one of the issue (causing data
abort exception) identified with fast_commit and flex_bg.

Although I have given -g quick, log group a run and didn't see any surprise
there. But a careful review in Patch-1 & Patch-6 will surely help! :)

Will shortly send out the fstest patch, which could trigger this.

Patch details
==============

Patch-1: Fixes a data abort which could happen during recovery with flex_bg
feature. This might be even needed to cc to stable, right?

Patch-[2-5]: Minor cleanups

Patch[6]: Good to have to avoid any accidental set/clear of critical FS Metadata

Ritesh Harjani (6):
  ext4: Fixes ext4_mb_mark_bb() with flex_bg with fast_commit
  ext4: Implement ext4_group_block_valid() as common function
  ext4: Use in_range() for range checking in ext4_fc_replay_check_excluded
  ext4: No need to test for block bitmap bits in ext4_mb_mark_bb()
  ext4: Refactor ext4_free_blocks() to pull out ext4_mb_clear_bb()
  ext4: Add extra check in ext4_mb_mark_bb() to prevent against possible corruption

 fs/ext4/block_validity.c |  31 ++++++
 fs/ext4/ext4.h           |   3 +
 fs/ext4/fast_commit.c    |   4 +-
 fs/ext4/mballoc.c        | 235 +++++++++++++++++++++++----------------
 4 files changed, 176 insertions(+), 97 deletions(-)

--
2.31.1