linux-kernel - Re: [PATCH v2 0/2] Fixes for fscache volume operations

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Date:   Wed, 11 Jan 2023 12:03:48 +0800
From:   Hou Tao <houtao@...weicloud.com>
To:     linux-cachefs@...hat.com
Cc:     David Howells <dhowells@...hat.com>,
        Jeff Layton <jlayton@...nel.org>, linux-erofs@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org,
        Jingbo Xu <jefflexu@...ux.alibaba.com>,
        "houtao1@...wei.com" <houtao1@...wei.com>
Subject: Re: [PATCH v2 0/2] Fixes for fscache volume operations

ping ?

On 12/26/2022 6:33 PM, Hou Tao wrote:
> From: Hou Tao <houtao1@...wei.com>
>
> Hi,
>
> The patchset includes two fixes for fscache volume operations: patch 1
> fixes the hang problem during volume acquisition when the volume
> acquisition process waits for the freeing of relinquished volume, patch
> 2 adds the missing memory barrier in fscache_create_volume_work() and it
> is spotted through code review when checking whether or not these is
> missing smp_mb() before invoking wake_up_bit().
>
> Comments are always welcome.
>
> Chang Log:
> v2:
>  * rebased on v6.1-rc1
>  * Patch 1: use wait_on_bit() instead (Suggested by David)
>  * Patch 2: add the missing smp_mb() in fscache_create_volume_work()
>
> v1: https://listman.redhat.com/archives/linux-cachefs/2022-December/007384.html
>
> Hou Tao (2):
>   fscache: Use wait_on_bit() to wait for the freeing of relinquished
>     volume
>   fscache: Add the missing smp_mb__after_atomic() before wake_up_bit()
>
>  fs/fscache/volume.c | 17 ++++++++++++++---
>  1 file changed, 14 insertions(+), 3 deletions(-)
>