On Mon, Jan 29, 2018 at 1:48 PM, Ross Zwisler <[email protected]> wrote: > It used to be that the only PMEM namespaces with a variable sector size > were ones with a BTT, but that has changed. sector_size still doesn't make > sense for device DAX since we don't have a block I/O path. > > If we don't have a specified sector size, as happens with namespaces of > devtype nd_namespace_io and older v1.1 namespace labels, we will display > the default sector size of 512. > > Signed-off-by: Ross Zwisler <[email protected]> > Reviewed-by: Dave Jiang <[email protected]> > --- > util/json.c | 29 ++++++++++++++++++++++++----- > 1 file changed, 24 insertions(+), 5 deletions(-) > > diff --git a/util/json.c b/util/json.c > index 95beaa2..17d8f13 100644 > --- a/util/json.c > +++ b/util/json.c > @@ -718,11 +718,6 @@ struct json_object *util_namespace_to_json(struct > ndctl_namespace *ndns, > goto err; > json_object_object_add(jndns, "uuid", jobj); > > - jobj = json_object_new_int(ndctl_btt_get_sector_size(btt)); > - if (!jobj) > - goto err; > - json_object_object_add(jndns, "sector_size", jobj); > - > bdev = ndctl_btt_get_block_device(btt); > } else if (pfn) { > ndctl_pfn_get_uuid(pfn, uuid); > @@ -774,6 +769,30 @@ struct json_object *util_namespace_to_json(struct > ndctl_namespace *ndns, > } else > bdev = ndctl_namespace_get_block_device(ndns); > > + jobj = NULL; > + if (btt) { > + jobj = json_object_new_int(ndctl_btt_get_sector_size(btt)); > + if (!jobj) > + goto err; > + } else if (!dax) { > + unsigned int sector_size = > ndctl_namespace_get_sector_size(ndns); > + > + /* > + * The kernel will default to a 512 byte sector size on PMEM > + * namespaces that don't explicitly have a sector size. This > + * happens because they use pre-v1.2 labels or because they > + * don't have a label space (devtype=nd_namespace_io). > + */ > + if (!sector_size) > + sector_size = 512; > + > + jobj = json_object_new_int(sector_size); > + if (!jobj) > + goto err; > + } > + if (jobj) > + json_object_object_add(jndns, "sector_size", jobj); > + > if (bdev && bdev[0]) { > jobj = json_object_new_string(bdev); > if (!jobj) > -- > 2.14.3 >
Looks good to me, you can add: Reviewed-by: Dan Williams <[email protected]> _______________________________________________ Linux-nvdimm mailing list [email protected] https://lists.01.org/mailman/listinfo/linux-nvdimm
