From: Ivan Zahariev <famzah@famzah.net>
To: linux-ext4@vger.kernel.org
Subject: jbd2: fix deadlock while checkpoint thread waits commit thread to finish (backport to 4.14)
Date: Wed, 7 Jul 2021 21:42:25 +0300 [thread overview]
Message-ID: <3221ced0-e8f3-53da-3474-28367272f35d@famzah.net> (raw)
Hello,
We're running Linux kernel 4.14.x and our systems occasionally suffer a
bug which is already fixed:
https://github.com/torvalds/linux/commit/53cf978457325d8fb2cdecd7981b31a8229e446e
This bugfix hasn't been ported to Linux kernels 4.14 or 4.19. The patch
applies cleanly. The two files "fs/jbd2/checkpoint.c" and
"fs/jbd2/journal.c" seem pretty identical in the affected sections
compared to kernel 5.4 where we have this bugfix already applied.
Is it on purpose that this bugfix hasn't been ported to 4.14? Is it safe
that we backport it manually in our kernel 4.14 builds? Or is the "ext4"
system in 4.14 and 5.4 fundamentally different and this would lead to
data loss or other problems?
Thank you.
Best regards.
--Ivan
next reply other threads:[~2021-07-07 18:42 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-07 18:42 Ivan Zahariev [this message]
2021-07-07 23:52 ` jbd2: fix deadlock while checkpoint thread waits commit thread to finish (backport to 4.14) Theodore Ts'o
2021-07-08 3:45 ` Ivan Zahariev
2021-07-12 9:04 ` Jan Kara
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