Re: [PATCH 2/8] swap: lock i_mutex for swap_writepage direct_IO

[Al Viro]

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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