linux-kernel - Re: [f2fs-dev] [PATCH] Revert "f2fs: block cache/dio write during f2fs_enable

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Message-Id: 
 <176853542902.73880.9446565153700505596.git-patchwork-notify@kernel.org>
Date: Fri, 16 Jan 2026 03:50:29 +0000
From: patchwork-bot+f2fs@...nel.org
To: Chao Yu <chao@...nel.org>
Cc: jaegeuk@...nel.org, stable@...nel.org, linux-kernel@...r.kernel.org,
 linux-f2fs-devel@...ts.sourceforge.net
Subject: Re: [f2fs-dev] [PATCH] Revert "f2fs: block cache/dio write during
 f2fs_enable_checkpoint()"

Hello:

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

On Fri, 16 Jan 2026 11:38:16 +0800 you wrote:
> This reverts commit 196c81fdd438f7ac429d5639090a9816abb9760a.
> 
> Original patch may cause below deadlock, revert it.
> 
> write				remount
> - write_begin
>  - lock_page  --- lock A
>  - prepare_write_begin
>   - f2fs_map_lock
> 				- f2fs_enable_checkpoint
> 				 - down_write(cp_enable_rwsem)  --- lock B
> 				 - sync_inode_sb
> 				  - writepages
> 				   - lock_page			--- lock A
>    - down_read(cp_enable_rwsem)  --- lock A
> 
> [...]

Here is the summary with links:
  - [f2fs-dev] Revert "f2fs: block cache/dio write during f2fs_enable_checkpoint()"
    https://git.kernel.org/jaegeuk/f2fs/c/3996b70209f1

You are awesome, thank you!
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