Re: [PATCH v2] f2fs: reject setattr size changes on large folio files

[Chao Yu]

On 6/10/26 22:37, Wenjie Qi wrote:
> F2FS large folios are only enabled for immutable non-compressed files.
> Writable open and writable mmap reject such mappings, but truncate(2)
> through f2fs_setattr() misses the same guard.
> 
> If FS_IMMUTABLE_FL is cleared while the inode is still cached, the mapping
> can keep large-folio support and ATTR_SIZE can change i_size. Reject size
> changes in that state.
> 

Cc: stable@xxxxxxxxxx

> Fixes: 05e65c14ea59 ("f2fs: support large folio for immutable non-compressed case")
> Signed-off-by: Wenjie Qi <qiwenjie@xxxxxxxxxx>

Reviewed-by: Chao Yu <chao@xxxxxxxxxx>

Thanks,