Re: [PATCH 3/3] f2fs: compress: fix to assign cc.cluster_idx correctly

[Jaegeuk Kim]

On 05/10, Chao Yu wrote:
> In f2fs_destroy_compress_ctx(), after f2fs_destroy_compress_ctx(),
> cc.cluster_idx will be cleared w/ NULL_CLUSTER, f2fs_cluster_blocks()
> may check wrong cluster metadata, fix it.
> 
> Fixes: 4c8ff7095bef ("f2fs: support data compression")
> Signed-off-by: Chao Yu <yuchao0@xxxxxxxxxx>
> ---
>  fs/f2fs/compress.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/fs/f2fs/compress.c b/fs/f2fs/compress.c
> index 340815cd0887..30b003447510 100644
> --- a/fs/f2fs/compress.c
> +++ b/fs/f2fs/compress.c
> @@ -1066,6 +1066,8 @@ static int prepare_compress_overwrite(struct compress_ctx *cc,
>  			f2fs_put_rpages(cc);
>  			f2fs_unlock_rpages(cc, i + 1);
>  			f2fs_destroy_compress_ctx(cc);
> +			cc->cluster_idx = index >>
> +					F2FS_I(cc->inode)->i_log_cluster_size;

I didn't test tho, how about this?