On Tue, 2006-03-21 at 17:46 +0000, Christoph Hellwig wrote:
> > commit 47989d7454398827500d0e73766270986a3b488f
> > Author: Chuck Lever <[email protected]>
> > Date: Mon Mar 20 13:44:32 2006 -0500
> >
> > NFS: remove support for multi-segment iovs in the direct write path
> >
> > Eliminate the persistent use of automatic storage in all parts of the
> > NFS client's direct write path to pave the way for introducing support
> > for aio against files opened with the O_DIRECT flag.
>
> NACK. We have patches pending that consolidate ->aio_read/write and
> ->read/writev into one operation. this change is completely counterproductive
> towards that goal which has been discussed on -fsdevel for a while.
How so? The interface is _exactly_ the same as before.
We never had support for multiple iovecs in O_DIRECT, but were passing
around a single iovec entry deep into code that couldn't care less.
Cheers,
Trond
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