linux-ext4 - Re: [PATCH 2/8] nowait aio: Introduce RWF

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Date:   Tue, 18 Apr 2017 23:39:30 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Goldwyn Rodrigues <rgoldwyn@...e.de>
Cc:     linux-fsdevel@...r.kernel.org, jack@...e.com, hch@...radead.org,
        linux-block@...r.kernel.org, linux-btrfs@...r.kernel.org,
        linux-ext4@...r.kernel.org, linux-xfs@...r.kernel.org,
        sagi@...mberg.me, avi@...lladb.com, axboe@...nel.dk,
        linux-api@...r.kernel.org, willy@...radead.org,
        tom.leiming@...il.com, Goldwyn Rodrigues <rgoldwyn@...e.com>
Subject: Re: [PATCH 2/8] nowait aio: Introduce RWF_NOWAIT

>  	}
>  
> -
>  	/* prevent overflows */

Weird whitespace change.

> @@ -1593,6 +1593,11 @@ static int io_submit_one(struct kioctx *ctx, struct iocb __user *user_iocb,
>  	}
>  
>  	req->common.ki_flags |= iocb_rw_flags(iocb->aio_rw_flags);
> +	if ((req->common.ki_flags & IOCB_NOWAIT) &&
> +	    !(req->common.ki_flags & IOCB_DIRECT)) {
> +			ret = -EINVAL;
> +			goto out_put_req;
> +		}

Wrong indentation.  Also I think this should be EOPNOTSUPP here.