Re: [f2fs-dev] [PATCH] f2fs: fix to avoid potential section-unaligned pinfile

Hello:

This patch was applied to jaegeuk/f2fs.git (dev)
by Jaegeuk Kim <[email protected]>:

On Mon, 29 Jun 2026 11:49:18 +0000 you wrote:
> Blocks of pinfile may not aligned to section size due to wrong use
> on pinfile, result in heavy overhead of GC, let avoid this by
> adding additional check condition in f2fs_setattr().
> 
> - truncate -s 8mb pinfile
> : random checkpoint may persist filesize w/ inode
> - fallocate -o 0 -l 8mb pinfile
>  - f2fs_fallocate
>   - f2fs_expand_inode_data
>    - f2fs_allocate_pinning_section
>    - f2fs_map_blocks
>     - f2fs_map_lock
>     - __allocate_data_block
>     - file_need_truncate
>     : w/ FADVISE_TRUNC_BIT, we can expect unaligned mapping can be
>       truncated while open() if f2fs is not umount abnormally
>     - f2fs_map_unlock
>     : following f2fs checkpoint and sudden power-cut
> 
> [...]

Here is the summary with links:
  - [f2fs-dev] f2fs: fix to avoid potential section-unaligned pinfile
    https://git.kernel.org/jaegeuk/f2fs/c/bf4272cef5ec

You are awesome, thank you!
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