linux-ext4 - Re: [PATCH] jbd2: wake up journal waiters in FIFO order, not LIFO

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Message-ID: <a6343e6d-00a9-3546-2182-6058150602b0@ya.ru>
Date:   Thu, 8 Sep 2022 11:28:31 +0300
From:   Andrew <anserper@...ru>
To:     Alexey Lyahkov <alexey.lyashkov@...il.com>,
        "Ritesh Harjani (IBM)" <ritesh.list@...il.com>
Cc:     linux-ext4 <linux-ext4@...r.kernel.org>,
        Theodore Ts'o <tytso@....edu>,
        Andreas Dilger <adilger@...ger.ca>,
        Artem Blagodarenko <artem.blagodarenko@...il.com>
Subject: Re: [PATCH] jbd2: wake up journal waiters in FIFO order, not LIFO

> Other logs have shown this thread can’t take a handle, but other threads able to do it many times.
> Kernel detector don’t hit because thread have wakeup many times but it have seen T_LOCKED and go to sleep again.
Also, the transactions are small because the workload is sync writes.