On Thu, Apr 29, 2021 at 06:48:07PM +0300, Kirill A. Shutemov wrote: > > Side note: this will only ever work for non-shared mappings. > > I think it's show-stopper for the use-case, no? IIUC, the mappings is used > for communication between a compositor and a client and has to be shared. Yes I had the same doubt.. Besides, we probably don't want to convert all VM_FAULT_SIGBUS to fallback to anonymous pages, as I see that vmf_error() converts mostly everything besides -ENOMEM to VM_FAULT_SIGBUS. Thanks, -- Peter Xu
