On Thu, Jun 16, 2022 at 10:04:37PM -0500, Mike Christie wrote: > If NDOB is set we don't have a buffer. We will then crash when trying to > access the t_data_sg. This has us allocate a page to use for the data > buffer that gets passed to vfs_iter_write. But only due to the last patch, so this should be reordered before that. I also think this should just use ZERO_PAGE() or even better switch to FALLOC_FL_ZERO_RANGE as a first pass.