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

[Christoph Hellwig]

On Wed, Dec 17, 2014 at 06:58:32AM -0800, Omar Sandoval wrote:
> See my previous message. If we use O_DIRECT on the original open, then
> filesystems that implement bmap but not direct_IO will no longer work.
> These are the ones that I found in my tree:

In the long run I don't think they are worth keeping.  But to keep you
out of that discussion you can just try an open without O_DIRECT if the
open with the flag failed.
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