---- 在 星期日, 2020-10-18 15:53:23 Amir Goldstein <amir73il@xxxxxxxxx> 撰写 ---- > On Fri, Oct 16, 2020 at 7:38 PM Chengguang Xu <cgxu519@xxxxxxxxxxxx> wrote: > > > > Currently only mmap does not behave as stacked file operation, > > although in practice there is less change to open a file in > > RDONLY mode and take long time to do mmap but the fix looks > > reasonable. > > I suppose you do not have a real life use case where this fix > is relevant? Detected by some unexpectedly running test scripts. > > The thing is that this change is not without consequence. > It could result in 2 overlapping mmaps on the same RDONLY fd > mapping a different file and it can be even more confusing > than different fd mapping different files. > > It is not clear which non-standard behavior is preferred, so without > any evidence that one strange behavior is preferred over the other > I don't think we should change anything. > Makes sense.
