Re: [PATCH 07/13] aio: enabled thread based async fsync

[Benjamin LaHaise]

On Mon, Jan 11, 2016 at 08:48:23PM -0800, Linus Torvalds wrote:
> On Mon, Jan 11, 2016 at 8:03 PM, Linus Torvalds
> <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:
> >
> > So my argument is really that I think it would be better to at least
> > look into maybe creating something less crapulent, and striving to
> > make it easy to make the old legacy interfaces be just wrappers around
> > a more capable model.
> 
> Hmm. Thinking more about this makes me worry about all the system call
> versioning and extra work done by libc.
> 
> At least glibc has traditionally decided to munge and extend on kernel
> system call interfaces, to the point where even fairly core data
> structures (like "struct stat") may not always look the same to the
> kernel as they do to user space.
> 
> So with that worry, I have to admit that maybe a limited interface -
> rather than allowing arbitrary generic async system calls - might have
> advantages. Less room for mismatches.
> 
> I'll have to think about this some more.

Any further thoughts on this after a few days worth of pondering?

		-ben

>                   Linus

-- 
"Thought is the essence of where you are now."