Jan Kara <jack@xxxxxxx> writes: Hi, Jan, Thanks for looking into this! > There are couple of open questions with this implementation: > > 1) Is it worth the hassle? > 2) Is S_SYNC good flag to use or should we use a new inode flag? > 3) VM_FAULT_RO and especially passing of resulting 'pfn' from > dax_iomap_fault() through filesystem fault handler to dax_pfn_mkwrite() in > vmf->orig_pte is a bit of a hack. So far I'm not sure how to refactor > things to make this cleaner. 4) How does an application discover that it is safe to flush from userspace? -Jeff
