On Tue, Jan 24, 2012 at 04:25:55PM +0000, Arnd Bergmann wrote: > On Tuesday 24 January 2012, Pekka Enberg wrote: > > On Tue, 2012-01-24 at 13:40 -0200, Marcelo Tosatti wrote: > > > What is the practical advantage of a syscall, again? > > > > Why do you ask? The advantage for this particular case is not needing to > > add ioctls() for configuration and keeping the file read/write ABI > > simple. > > The two are obviously equivalent and there is no reason to avoid > ioctl in general. However I agree that the syscall would be better > in this case, because that is what we tend to use for core kernel > functionality, while character devices tend to be used for I/O device > drivers that need stuff like enumeration and permission management. > > Arnd Makes sense. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>