linux-kernel - Re: [PATCH 2/8] swap: lock i_mutex for swap_writepage direct

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Message-ID: <20141219062827.GV22149@ZenIV.linux.org.uk>
Date:	Fri, 19 Dec 2014 06:28:27 +0000
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Omar Sandoval <osandov@...ndov.com>
Cc:	Christoph Hellwig <hch@...radead.org>, Jan Kara <jack@...e.cz>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Trond Myklebust <trond.myklebust@...marydata.com>,
	David Sterba <dsterba@...e.cz>, linux-fsdevel@...r.kernel.org,
	linux-mm@...ck.org, linux-nfs@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/8] swap: lock i_mutex for swap_writepage direct_IO

On Thu, Dec 18, 2014 at 10:24:05PM -0800, Omar Sandoval wrote:
> +       swap_file = file_open_name(name, O_RDWR | O_LARGEFILE | O_DIRECT, 0);
> +       if (IS_ERR(swap_file) && PTR_ERR(swap_file) == -EINVAL)

ITYM if (swap_file == ERR_PTR(-EINVAL)) here...
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