[Linux-cachefs] [PATCH v3] cachefiles: fix error return code in cachefiles_ondemand_copen()

[Gao Xiang]

On Thu, Aug 25, 2022 at 04:36:20PM +0300, Dan Carpenter wrote:
> I spent a long time looking at this as well...  It's really inscrutable
> code.  It would be more readable if we just spelled things out in the
> most pedantic way possible:
> 

Yeah, the following code looks much better. Ke, would you mind
sending a version like below instead?

Thanks,
Gao Xiang

> diff --git a/fs/cachefiles/ondemand.c b/fs/cachefiles/ondemand.c
> index 1fee702d5529..7e1586bd5cf3 100644
> --- a/fs/cachefiles/ondemand.c
> +++ b/fs/cachefiles/ondemand.c
> @@ -158,9 +158,13 @@ int cachefiles_ondemand_copen(struct cachefiles_cache *cache, char *args)
>  
>  	/* fail OPEN request if daemon reports an error */
>  	if (size < 0) {
> -		if (!IS_ERR_VALUE(size))
> -			size = -EINVAL;
> -		req->error = size;
> +		if (!IS_ERR_VALUE(size)) {
> +			req->error = -EINVAL;
> +			ret = -EINVAL;
> +		} else {
> +			req->error = size;
> +			ret = 0;
> +		}
>  		goto out;
>  	}
>  
> 
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