linux-kernel - [PATCH v3 0/2] ext4: fix fast commit inode enqueueing during a full journal commit

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Date: Wed, 29 May 2024 10:20:28 +0100
From: "Luis Henriques (SUSE)" <luis.henriques@...ux.dev>
To: Theodore Ts'o <tytso@....edu>,
	Andreas Dilger <adilger@...ger.ca>,
	Jan Kara <jack@...e.cz>,
	Harshad Shirwadkar <harshadshirwadkar@...il.com>
Cc: linux-ext4@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	"Luis Henriques (SUSE)" <luis.henriques@...ux.dev>
Subject: [PATCH v3 0/2] ext4: fix fast commit inode enqueueing during a full journal commit

Hi!

Here's v3 of this fix to the fast commit enqueuing bug triggered by fstest
generic/047.  This version simplifies the previous patch version by re-using
the i_sync_tid field in struct ext4_inode_info instead of adding a new one.

The extra patch includes a few extra fixes to the tid_t type handling.  Jan
brought to my attention the fact that this sequence number may wrap, and I
quickly found a few places in the code where the tid_geq() and tid_gt()
helpers had to be used.

Again, please note that this fix requires [1] to be applied too.

[1] https://lore.kernel.org/all/20240515082857.32730-1-luis.henriques@linux.dev

Luis Henriques (SUSE) (2):
  ext4: fix fast commit inode enqueueing during a full journal commit
  ext4: fix possible tid_t sequence overflows

 fs/ext4/fast_commit.c | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)