Messages in this thread | | | Subject | Re: [PATCH 5/7] FUSE: implement ioctl support | From | Miklos Szeredi <> | Date | Thu, 28 Aug 2008 22:55:59 +0200 |
| |
On Thu, 28 Aug 2008, H. Peter Anvin wrote: > This is *hard* to get right, and we screw this up in the kernel with > painful regularity. The throught of having user-space processes, which > don't have access to the kernel locking primitives and functions like > copy_from_user() dealing with this stuff scares me crazy.
What issues exactly are you thinking of?
> That is why I'm suggesting using an in-kernel linearizer.
Lots of complexity, ugh... Even Tejun's current scheme is better IMO.
Miklos
| |