linux-kernel - Re: [f2fs-dev] [PATCH 1/2] f2fs: fix iostat lock protection

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Date:   Mon, 03 Apr 2023 18:30:18 +0000
From:   patchwork-bot+f2fs@...nel.org
To:     Bo Ye <bo.ye@...iatek.com>
Cc:     jaegeuk@...nel.org, chao@...nel.org, matthias.bgg@...il.com,
        angelogioacchino.delregno@...labora.com, qilin.tan@...iatek.com,
        yongdong.zhang@...iatek.com, linux-kernel@...r.kernel.org,
        light.hsieh@...iatek.com, linux-f2fs-devel@...ts.sourceforge.net,
        linux-mediatek@...ts.infradead.org, browse.zhang@...iatek.com,
        linux-arm-kernel@...ts.infradead.org, peng.zhou@...iatek.com
Subject: Re: [f2fs-dev] [PATCH 1/2] f2fs: fix iostat lock protection

Hello:

This series was applied to jaegeuk/f2fs.git (dev)
by Jaegeuk Kim <jaegeuk@...nel.org>:

On Fri, 31 Mar 2023 17:26:56 +0800 you wrote:
> From: Qilin Tan <qilin.tan@...iatek.com>
> 
> Made iostat lock irq safe to avoid potentinal deadlock.
> 
> Deadlock scenario:
> f2fs_attr_store
>   -> f2fs_sbi_store
>   -> _sbi_store
>   -> spin_lock(sbi->iostat_lock)
>     <interrupt request>
>     -> scsi_end_request
>     -> bio_endio
>     -> f2fs_dio_read_end_io
>     -> f2fs_update_iostat
>     -> spin_lock_irqsave(sbi->iostat_lock)  ===> Dead lock here
> 
> [...]

Here is the summary with links:
  - [f2fs-dev,1/2] f2fs: fix iostat lock protection
    https://git.kernel.org/jaegeuk/f2fs/c/daa080db4e7e
  - [f2fs-dev,2/2] f2fs: add __pack attribute for extent_info
    (no matching commit)

You are awesome, thank you!
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