On Fri, 2012-04-20 at 14:47 -0400, Fred Isaman wrote:
> version 2 of these patches had some patch fragments that were left
> unsquashed. This version merely squashes those in.
>
>
>
> These patches rewrite the directio code to use the same coalesce
> and RPC sendoff code as cached io. This allows directio to make
> use of the preexisting pnfs code.
>
> There are some limitations at the moment that need to be fixed, but
> given the amount of change this patchset introduces I'm
> trying to put out as small a base set of patches as possible.
>
> The primary TODOs are:
> - Coalescing of bsize<PAGESIZE, while technically correct, is suboptimal.
> To fix this I'll need to adjust the *_multi functions to handle
> more than a single req
>
> - Unaligned io is not sent to pnfs, as there is no existing code to deal
> with a layout boundary (think stripe edge) occurring in the middle
> of a nfs_page.
This now looks good to me...
--
Trond Myklebust
Linux NFS client maintainer
NetApp
Trond.Myklebust@xxxxxxxxxx
www.netapp.com
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