linux-kernel - Re: [PATCH v5 7/7] fs: add a flag for per-operation O

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Message-ID: <x49r3xf28qn.fsf@segfault.boston.devel.redhat.com>
Date:	Thu, 06 Nov 2014 18:46:08 -0500
From:	Jeff Moyer <jmoyer@...hat.com>
To:	Milosz Tanski <milosz@...in.com>
Cc:	linux-kernel@...r.kernel.org, Christoph Hellwig <hch@....de>,
	Christoph Hellwig <hch@...radead.org>,
	linux-fsdevel@...r.kernel.org, linux-aio@...ck.org,
	Mel Gorman <mgorman@...e.de>,
	Volker Lendecke <Volker.Lendecke@...net.de>,
	Tejun Heo <tj@...nel.org>, "Theodore Ts'o" <tytso@....edu>,
	Al Viro <viro@...iv.linux.org.uk>, linux-api@...r.kernel.org,
	Michael Kerrisk <mtk.manpages@...il.com>,
	linux-arch@...r.kernel.org, ceph-devel@...r.kernel.org,
	fuse-devel@...ts.sourceforge.net, linux-nfs@...r.kernel.org,
	ocfs2-devel@....oracle.com, linux-mm@...ck.org
Subject: Re: [PATCH v5 7/7] fs: add a flag for per-operation O_DSYNC semantics

Milosz Tanski <milosz@...in.com> writes:

> -		if (type == READ && (flags & RWF_NONBLOCK))
> -			return -EAGAIN;
> +		if (type == READ) {
> +			if (flags & RWF_NONBLOCK)
> +				return -EAGAIN;
> +		} else {
> +			if (flags & RWF_DSYNC)
> +				return -EINVAL;
> +		}

Minor nit, but I'd rather read something that looks like this:

	if (type == READ && (flags & RWF_NONBLOCK))
		return -EAGAIN;
	else if (type == WRITE && (flags & RWF_DSYNC))
		return -EINVAL;

I won't lose sleep over it, though.

Reviewed-by: Jeff Moyer <jmoyer@...hat.com>
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