On Tue, Feb 18, 2020 at 04:48:35PM -0500, Vivek Goyal wrote: > Currently pmem_clear_poison() expects offset and len to be sector aligned. > Atleast that seems to be the assumption with which code has been written. > It is called only from pmem_do_bvec() which is called only from pmem_rw_page() > and pmem_make_request() which will only passe sector aligned offset and len. > > Soon we want use this function from dax_zero_page_range() code path which > can try to zero arbitrary range of memory with-in a page. So update this > function to assume that offset and length can be arbitrary and do the > necessary alignments as needed. > > nvdimm_clear_poison() seems to assume offset and len to be aligned to > clear_err_unit boundary. But this is currently internal detail and is > not exported for others to use. So for now, continue to align offset and > length to SECTOR_SIZE boundary. Improving it further and to align it > to clear_err_unit boundary is a TODO item for future. > > Signed-off-by: Vivek Goyal <vgoyal@xxxxxxxxxx> This looks sensibel to me, but I'd really like to have Dan take at look.
