On Mon, Oct 24, 2022 at 10:56:48PM +0100, Matthew Wilcox wrote: > On Mon, Oct 24, 2022 at 02:32:18PM -0700, Darrick J. Wong wrote: > > Fix the incorrect return type for these two functions, and make the > > !fsdax version return SIGBUS since there is no vm_fault_t that maps to > > zero. > > Hmm? You should be able to return 0 without sparse complaining. What does (vm_fault_t)0 do? And why wouldn't we want to induce a segfault if someone calls the fsdax fault function when fsdax isn't supported? --D
