On 12/21/20 10:49 PM, Naohiro Aota wrote:
Zoned device has its own hardware restrictions e.g. max_zone_append_size when using REQ_OP_ZONE_APPEND. To follow the restrictions, use bio_add_zone_append_page() instead of bio_add_page(). We need target device to use bio_add_zone_append_page(), so this commit reads the chunk information to memoize the target device to btrfs_io_bio(bio)->device. Currently, zoned btrfs only supports SINGLE profile. In the feature, btrfs_io_bio can hold extent_map and check the restrictions for all the devices the bio will be mapped. Signed-off-by: Naohiro Aota <naohiro.aota@xxxxxxx>
Reviewed-by: Josef Bacik <josef@xxxxxxxxxxxxxx> Thanks, Josef
