>>>>> "Damien" == Damien Le Moal <damien.lemoal@xxxxxxx> writes: Damien> Implement ZBC support functions to setup zoned disks, both Damien> host-managed and host-aware models. Only zoned disks that Damien> satisfy the following conditions are supported: Damien> 1) All zones are the same size, with the exception of an Damien> eventual last smaller runt zone. Damien> 2) For host-managed disks, reads are unrestricted (reads are not Damien> failed due to zone or write pointer alignement constraints). Damien> Zoned disks that do not satisfy these 2 conditions are setup Damien> with a capacity of 0 to prevent their use. Damien> The function sd_zbc_read_zones, called from sd_revalidate_disk, Damien> checks that the device satisfies the above two constraints. This Damien> function may also change the disk capacity previously set by Damien> sd_read_capacity for devices reporting only the capacity of Damien> conventional zones at the beginning of the LBA range Damien> (i.e. devices reporting rc_basis set to 0). Damien> The capacity message output was moved out of sd_read_capacity Damien> into a new function sd_print_capacity to include this eventual Damien> capacity change by sd_zbc_read_zones. This new function also Damien> includes a call to sd_zbc_print_zones to display the number of Damien> zones and zone size of the device. Acked-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx> -- Martin K. Petersen Oracle Linux Engineering -- To unsubscribe from this list: send the line "unsubscribe linux-block" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
