Messages in this thread | | | From | Oliver Neukum <> | Subject | Re: MAX_USBFS_BUFFER_SIZE | Date | Fri, 3 Mar 2006 11:34:10 +0100 |
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Am Mittwoch, 1. März 2006 22:59 schrieb Duncan Sands: > > So, queing alot URBs is the recommended way to sustain the bus? Allowing > > way bigger buffers will not be realistic? > > usbfs could copy the user buffer to a bunch of non-contiguous pages, and > then fire those off in an urb using the scatter-gather stuff. [Rather than, > as now, allocating a bunch of contiguous pages using kmalloc]. That would > probably make it possible to use much much bigger user-space buffers. Plus > the code looks rather easy to write.
It seems to me that that would change the API. The scatter/gather stuff can fail partially, can't it?
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