Re: [PATCH 5/5] f2fs: support direct I/O with fscrypt using blk-crypto

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On 2020/7/10 3:47, Satya Tangirala wrote:
> From: Eric Biggers <ebiggers@xxxxxxxxxx>
> 
> Wire up f2fs with fscrypt direct I/O support.
> 
> Signed-off-by: Eric Biggers <ebiggers@xxxxxxxxxx>
> Signed-off-by: Satya Tangirala <satyat@xxxxxxxxxx>
> ---
>  fs/f2fs/f2fs.h | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
> index b35a50f4953c..6d662a37b445 100644
> --- a/fs/f2fs/f2fs.h
> +++ b/fs/f2fs/f2fs.h
> @@ -4082,7 +4082,9 @@ static inline bool f2fs_force_buffered_io(struct inode *inode,
>  	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
>  	int rw = iov_iter_rw(iter);
>  
> -	if (f2fs_post_read_required(inode))
> +	if (!fscrypt_dio_supported(iocb, iter))
> +		return true;
> +	if (fsverity_active(inode))

static inline bool f2fs_post_read_required(struct inode *inode)
{
	return f2fs_encrypted_file(inode) || fsverity_active(inode) ||
		f2fs_compressed_file(inode);
}

That's not correct, missed to check compression condition.

>  		return true;
>  	if (f2fs_is_multi_device(sbi))
>  		return true;
> 



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