Introduce the helper function disk_zone_is_offline() for testing if a zone of a gendisk has the offline condition. The zone to test is identified using a sector number that must belong to the target zone to check. Signed-off-by: Damien Le Moal Reviewed-by: Christoph Hellwig Reviewed-by: Martin K. Petersen Reviewed-by: Hannes Reinecke --- block/blk-zoned.c | 18 ++++++++++++++++++ include/linux/blkdev.h | 9 +++++++++ 2 files changed, 27 insertions(+) diff --git a/block/blk-zoned.c b/block/blk-zoned.c index 4c5889296191..07d504287024 100644 --- a/block/blk-zoned.c +++ b/block/blk-zoned.c @@ -292,6 +292,24 @@ static bool disk_zone_is_seq(struct gendisk *disk, sector_t sector) return !blk_zstate_is_conv(zs); } +/** + * disk_zone_is_offline - check if a sector belongs to an offline zone + * @disk: gendisk to check + * @sector: sector number + * + * Check if @sector on @disk is contained in an offline zone. + * This function can be used only when the bdev queue was entered (BIOs + * submitted but not yet completed) or when holding zone_revalidate_mutex. + */ +bool disk_zone_is_offline(struct gendisk *disk, sector_t sector) +{ + if (!blk_queue_is_zoned(disk->queue)) + return false; + + return disk_zone_get_cond(disk, sector) == BLK_ZONE_COND_OFFLINE; +} +EXPORT_SYMBOL_GPL(disk_zone_is_offline); + /** * bdev_zone_is_seq - check if a sector belongs to a sequential write zone * @bdev: block device to check diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 215753171cef..a2c36b4e6308 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -940,6 +940,9 @@ static inline unsigned int disk_zone_capacity(struct gendisk *disk, return disk->last_zone_capacity; return disk->zone_capacity; } + +bool disk_zone_is_offline(struct gendisk *disk, sector_t sector); + static inline unsigned int bdev_zone_capacity(struct block_device *bdev, sector_t pos) { @@ -954,6 +957,12 @@ static inline unsigned int disk_nr_zones(struct gendisk *disk) return 0; } +static inline bool disk_zone_is_offline(struct gendisk *disk, + sector_t sector) +{ + return false; +} + static inline bool bdev_zone_is_seq(struct block_device *bdev, sector_t sector) { return false; -- 2.56.0