When memory backing is enabled, use null_handle_discard() to free the
backing memory used by a zone when the zone is being reset.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
char disk_name[DISK_NAME_LEN];
};
+blk_status_t null_handle_discard(struct nullb_device *dev, sector_t sector,
+ sector_t nr_sectors);
blk_status_t null_process_cmd(struct nullb_cmd *cmd,
enum req_opf op, sector_t sector,
unsigned int nr_sectors);
kunmap_atomic(dst);
}
-static blk_status_t null_handle_discard(struct nullb_device *dev,
- sector_t sector, sector_t nr_sectors)
+blk_status_t null_handle_discard(struct nullb_device *dev,
+ sector_t sector, sector_t nr_sectors)
{
struct nullb *nullb = dev->nullb;
size_t n = nr_sectors << SECTOR_SHIFT;
null_unlock_zone_res(dev);
+ if (dev->memory_backed)
+ return null_handle_discard(dev, zone->start, zone->len);
+
return BLK_STS_OK;
}