[PATCH 5/8] xfs: split direct IO write path from xfs_file_aio_write

[Alex Elder]

On Tue, 2011-01-11 at 10:37 +1100, Dave Chinner wrote:
> From: Dave Chinner <dchinner at redhat.com>
> 
> The current xfs_file_aio_write code is a mess of locking shenanigans
> to handle the different locking requirements of buffered and direct
> IO. Start to clean this up by disentangling the direct IO path from
> the mess.
> 
> This also removes the failed direct IO fallback path to buffered IO.
> XFS handles all direct IO cases without needing to fall back to
> buffered IO, so we can safely remove this unused path. This greatly
> simplifies the logic and locking needed in the write path.

I reviewed this before, and your statement here
now explains the important change you made about
the dead code for falling back to buffered I/O.

So:

Reviewed-by: Alex Elder <aelder at sgi.com>

I think Christoph and I have signed off on all eight
of the patches in this series now.

					-Alex

> Signed-off-by: Dave Chinner <dchinner at redhat.com>
> Reviewed-by: Christoph Hellwig <hch at lst.de>
> ---