linux-kernel - Re: [f2fs-dev] [PATCH] f2fs: fix to wait on page writeback in __clone

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Date: Sun, 14 Apr 2024 15:32:45 +0000
From: patchwork-bot+f2fs@...nel.org
To: Chao Yu <chao@...nel.org>
Cc: jaegeuk@...nel.org, linux-kernel@...r.kernel.org,
 linux-f2fs-devel@...ts.sourceforge.net
Subject: Re: [f2fs-dev] [PATCH] f2fs: fix to wait on page writeback in
 __clone_blkaddrs()

Hello:

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

On Tue, 26 Mar 2024 19:28:45 +0800 you wrote:
> In below race condition, dst page may become writeback status
> in __clone_blkaddrs(), it needs to wait writeback before update,
> fix it.
> 
> Thread A				GC Thread
> - f2fs_move_file_range
>   - filemap_write_and_wait_range(dst)
> 					- gc_data_segment
> 					 - f2fs_down_write(dst)
> 					 - move_data_page
> 					  - set_page_writeback(dst_page)
> 					  - f2fs_submit_page_write
> 					 - f2fs_up_write(dst)
>   - f2fs_down_write(dst)
>   - __exchange_data_block
>    - __clone_blkaddrs
>     - f2fs_get_new_data_page
>     - memcpy_page
> 
> [...]

Here is the summary with links:
  - [f2fs-dev] f2fs: fix to wait on page writeback in __clone_blkaddrs()
    https://git.kernel.org/jaegeuk/f2fs/c/d3876e34e7e7

You are awesome, thank you!
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