Messages in this thread |  | | Date | Tue, 9 Jan 2001 22:12:55 +0100 | From | Christoph Hellwig <> | Subject | Re: [PLEASE-TESTME] Zerocopy networking patch, 2.4.0-1 |
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On Tue, Jan 09, 2001 at 12:55:51PM -0800, Linus Torvalds wrote: > > > On Tue, 9 Jan 2001, Christoph Hellwig wrote: > > > > Also the tuple argument you gave earlier isn't right in this specific case: > > > > when doing sendfile from pagecache to an fs, you have a bunch of pages, > > an offset in the first and a length that makes the data end before last > > page's end. > > No. > > Look at sendfile(). You do NOT have a "bunch" of pages. > > Sendfile() is very much a page-at-a-time thing, and expects the actual IO > layers to do it's own scatter-gather. > > So sendfile() doesn't want any array at all: it only wants a single > page-offset-length tuple interface.
The current implementations does. But others are possible. I could post one in a few days to show that it is possible.
Christoph
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