Thanks for the explanation about verity. I got your point. Thanks~
2020년 12월 4일 (금) 오후 2:18, Eric Biggers <ebigg...@kernel.org>님이 작성: > > On Fri, Dec 04, 2020 at 02:00:34PM +0900, Daeho Jeong wrote: > > I think I don't understand how verity works. > > Right after verity is enabled on a file, is the verity logic working > > for the whole file data area? > > Or it's just working for the data area which is updated after verity is > > enabled? > > > > It's for the whole file. > > My point is just that if there is a bio that saw that verity isn't enabled yet > when it started and therefore STEP_VERITY didn't get set in the > bio_post_read_ctx (or the bio_post_read_ctx didn't get allocated due to one > not > being needed), then the filesystem shouldn't change its mind and try to verify > the pages when the bio completes if verity happened to be enabled > concurrently. > It's too late for that bio. > > - Eric
