[patch] sendpath() support, 2.4.0-test3/-ac9

[Ingo Molnar]

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On 15 Jan 2001, Linus Torvalds wrote:

> 	int fd = open(..)
> 	fstat(fd..);
> 	sendfile(fd..);
> 	close(fd);
>
> is any slower than
>
> 	.. cache stat() in user space based on name ..
> 	sendpath(name, ..);
>
> on any real load.

just for kicks i've implemented sendpath() support. (patch against
2.4.0-test and sample code attached) It appears to work just fine here.
With a bit of reorganization in mm/filemap.c it was quite straightforward
to do.

Jonathan, is this what Zeus needs? If yes, it could be interesting to run
a simple benchmark to compare sendpath() to open()+sendfile()?

	Ingo

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Content-Transfer-Encoding: BASE64
Content-ID: <[e-mail]>
Content-Description: 
Content-Disposition: ATTACHMENT; FILENAME="sendpath.c"

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