Hello:
This patch was applied to jaegeuk/f2fs.git (dev)
by Jaegeuk Kim <jaeg...@kernel.org>:
On Thu, 6 Jul 2023 10:06:14 +0800 you wrote:
> Compression option in inode should not be changed after they have
> been used, however, it may happen in below race case:
>
> Thread A Thread B
> - f2fs_ioc_set_compress_option
> - check f2fs_is_mmap_file()
> - check get_dirty_pages()
> - check F2FS_HAS_BLOCKS()
> - f2fs_file_mmap
> - set_inode_flag(FI_MMAP_FILE)
> - fault
> - do_page_mkwrite
> - f2fs_vm_page_mkwrite
> - f2fs_get_block_locked
> - fault_dirty_shared_page
> - set_page_dirty
> - update i_compress_algorithm
> - update i_log_cluster_size
> - update i_cluster_size
>
> [...]
Here is the summary with links:
- [f2fs-dev,v3] f2fs: fix to avoid mmap vs set_compress_option case
https://git.kernel.org/jaegeuk/f2fs/c/3174a6dbb945
You are awesome, thank you!
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