[fuse-devel] read debugging

[Mark W. <mwa...@gm...>]

> > Where exactly in the code is the read being pre-empted b/c of cached
> > attributes about the file? I'd love to get my hands dirty.
>
> Great ;)  But beware, this is kernel territory.
>

Does this comment mean that pre-empting occurs in the fuse kernel
module? or in the kernel entirely apart from the fuse kernel module?
If its the latter then I would see why the options you mentioned are
the only real solution.

What kind of performance hit are we talking about? I can cache attrs
if I need to. Also, my fuse filesystems are essentially pass-throughs
so the kernel should already be caching the attributes for the "real"
file locations.

What kind of benefit could I see from going to a 2.6 kernel and thus
later version of fuse? Does 2.7 manage links better than 2.5?

Thanks a bunch,
Mark