On 6/15/22 03:19, Pankaj Raghav wrote:
@@ -489,14 +489,27 @@ static int blk_revalidate_zone_cb(struct blk_zone *zone, unsigned int idx,
* smaller last zone.
*/
if (zone->start == 0) {
- if (zone->len == 0 || !is_power_of_2(zone->len)) {
- pr_warn("%s: Invalid zoned device with non power of two zone size (%llu)\n",
- disk->disk_name, zone->len);
+ if (zone->len == 0) {
+ pr_warn("%s: Invalid zone size", disk->disk_name);
+ return -ENODEV;
+ }
+
+ /*
+ * Don't allow zoned device with non power_of_2 zone size with
+ * zone capacity less than zone size.
+ */
Please change "power_of_2" into "power-of-2".
+ if (!is_power_of_2(zone->len) && zone->capacity < zone->len) {
+ pr_warn("%s: Invalid zone capacity for non power of 2 zone size",
+ disk->disk_name);
return -ENODEV;
}
The above check seems wrong to me. I don't see why devices that report a
capacity that is less than the zone size should be rejected.
+ /*
+ * Division is used to calculate nr_zones for both power_of_2
+ * and non power_of_2 zone sizes as it is not in the hot path.
+ */
Shouldn't the above comment be moved to the patch description? I'm not
sure whether having such a comment in the source code is valuable.
+static inline sector_t blk_queue_offset_from_zone_start(struct request_queue *q,
+ sector_t sec)
+{
+ sector_t zone_sectors = blk_queue_zone_sectors(q);
+ u64 remainder = 0;
+
+ if (!blk_queue_is_zoned(q))
+ return false;
"return false" should only occur in functions returning a boolean. This
function returns type sector_t.
Thanks,
Bart.
