On Tue, Aug 25, 2020 at 10:26:14AM +0100, Yuxuan Shui wrote: > Hi, > > Do we actually want to fix this bug or not? There are a number of > people actually seeing this bug. bmap should not succeed for unwritten extents. > If you think this is not the right fix, what do you think we should > do? If the correct fix is to make ext4 use iomap_swapfile_activate, > maybe we should CC the ext4 people too? Yes, ext4 should use iomap_swapfile_activate.