On Thu, Jan 22, 2015 at 10:15:30AM -0500, Steven Rostedt wrote: > > kernfs provides two sets of file operations. One is seq_file based > > and the other is direct read/write. In both cases, bouncing data > > between userland and kernel is handled by kernfs. If you already have > > existing read write ops implemented doing custom buffer handling and > > direct userland memory access, it'll take some adaptation but for a > > lot of cases this would consolidate duplicate code paths. > > Does it also handle splice? That's a key part of the tracing code.
It doesn't yet. We can add it as a part of kernfs_syscall_ops tho which exists to support these specialized bypass operations. kernfs doesn't do much with these. It just passes over the calls to the registered callbacks. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
