On Tue, May 14, 2013 at 4:18 AM, Gergely Buday <gbuday@xxxxxxxxx> wrote: >>> Are there serious user space drivers in Linux? Could you name a few? >> >> Printer drivers, scanner drivers, file system drivers etc. > > How can I find them? Are they in the kernel source tree? > Filesystem drivers would use FUSE. A fairly long list of those is in the examples section of: http://en.wikipedia.org/wiki/Filesystem_in_Userspace Not all of those are Linux FUSE based, so don't assume they are all Linux filesystems, but many of them are. Note that a lot of filesystems that originate outside of linux, first come to linux as FUSE implementations. They may later be ported to native kernel modules. It is a effort vs. reward trade-off. I suspect the best known linux FUSE based filesystem is NTFS-3G. I've done some performance testing of it based on large files and USB3 connectivity. I don't see any meaningful performance degradation compared to EXT4 under the same restrictions. Greg _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies