Re: [PATCH 3/5] fs: remove ki_nbytes

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On Wed, 4 Feb 2015, Al Viro wrote:

> > > Um...  readv() is also going through ->aio_read().
> > 
> > Why does readv() do this but not read()?  Wouldn't it make more sense 
> > to have all the read* calls use the same internal interface?
> 
> Because there are two partially overlapping classes wrt vector IO semantics:
...

Thanks for the detailed explanation.  It appears to boil down to a 
series of historical accidents.

In any case, feel free to copy the non-isochronous behavior of the
synchronous routines in the async routines.  It certainly won't hurt 
anything.

Alan Stern

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