From: David Sterba <dsterba@suse.cz>
To: Wang Yugui <wangyugui@e16-tech.com>
Cc: linux-btrfs@vger.kernel.org
Subject: Re: fstests btrfs/057 trigger a deadlock on 5.4.187
Date: Mon, 12 Feb 2024 13:17:10 +0100 [thread overview]
Message-ID: <20240212121710.GC355@twin.jikos.cz> (raw)
In-Reply-To: <20220718080300.A3BF.409509F4@e16-tech.com>
On Mon, Jul 18, 2022 at 08:03:34AM +0800, Wang Yugui wrote:
> Hi,
>
> Because process_srcu() is 100% busy, so this problem is srcu related.
>
> the only srcu in btrfs is subvol_srcu, but it is dropped in 5.17
> c75e839414d3: Josef Bacik: btrfs: kill the subvol_srcu
> and this patch is difficult to backport to 5.4.x.
The whole SRCU use was replaced by root reference counting and spanning
many patches, backport would be really hard.
> so this problem maybe a little difficult to fix. If we hit this problem
> in more frequency, we may upgrade to 5.10.x
This could still be affected though.
prev parent reply other threads:[~2024-02-12 12:17 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-10 9:22 fstests btrfs/057 trigger a deadlock on 5.4.187 Wang Yugui
2022-06-11 6:26 ` Wang Yugui
2022-06-11 6:35 ` Wang Yugui
2022-07-18 0:03 ` Wang Yugui
2024-02-12 12:17 ` David Sterba [this message]
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