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authorDamien Le Moal <damien.lemoal@wdc.com>2021-01-28 07:47:32 +0300
committerJens Axboe <axboe@kernel.dk>2021-02-10 17:44:41 +0300
commit508aebb805277c541e94ee14daba4191ff02347e (patch)
tree5dc37ce33ad8e36046994a9d116d9216a72c17ad /block
parent0f1ba5f5d80f84b605e70cf4661cb1a44a3c02a6 (diff)
downloadlinux-508aebb805277c541e94ee14daba4191ff02347e.tar.xz
block: introduce blk_queue_clear_zone_settings()
Introduce the internal function blk_queue_clear_zone_settings() to cleanup all limits and resources related to zoned block devices. This new function is called from blk_queue_set_zoned() when a disk zoned model is set to BLK_ZONED_NONE. This particular case can happens when a partition is created on a host-aware scsi disk. Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@edc.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
-rw-r--r--block/blk-settings.c2
-rw-r--r--block/blk-zoned.c17
-rw-r--r--block/blk.h2
3 files changed, 21 insertions, 0 deletions
diff --git a/block/blk-settings.c b/block/blk-settings.c
index a1e66165adcf..7dd8be314ac6 100644
--- a/block/blk-settings.c
+++ b/block/blk-settings.c
@@ -910,6 +910,8 @@ void blk_queue_set_zoned(struct gendisk *disk, enum blk_zoned_model model)
*/
blk_queue_zone_write_granularity(q,
queue_logical_block_size(q));
+ } else {
+ blk_queue_clear_zone_settings(q);
}
}
EXPORT_SYMBOL_GPL(blk_queue_set_zoned);
diff --git a/block/blk-zoned.c b/block/blk-zoned.c
index 7a68b6e4300c..833978c02e60 100644
--- a/block/blk-zoned.c
+++ b/block/blk-zoned.c
@@ -549,3 +549,20 @@ int blk_revalidate_disk_zones(struct gendisk *disk,
return ret;
}
EXPORT_SYMBOL_GPL(blk_revalidate_disk_zones);
+
+void blk_queue_clear_zone_settings(struct request_queue *q)
+{
+ blk_mq_freeze_queue(q);
+
+ blk_queue_free_zone_bitmaps(q);
+ blk_queue_flag_clear(QUEUE_FLAG_ZONE_RESETALL, q);
+ q->required_elevator_features &= ~ELEVATOR_F_ZBD_SEQ_WRITE;
+ q->nr_zones = 0;
+ q->max_open_zones = 0;
+ q->max_active_zones = 0;
+ q->limits.chunk_sectors = 0;
+ q->limits.zone_write_granularity = 0;
+ q->limits.max_zone_append_sectors = 0;
+
+ blk_mq_unfreeze_queue(q);
+}
diff --git a/block/blk.h b/block/blk.h
index bfc4d526f626..3b53e44b967e 100644
--- a/block/blk.h
+++ b/block/blk.h
@@ -334,8 +334,10 @@ struct bio *blk_next_bio(struct bio *bio, unsigned int nr_pages, gfp_t gfp);
#ifdef CONFIG_BLK_DEV_ZONED
void blk_queue_free_zone_bitmaps(struct request_queue *q);
+void blk_queue_clear_zone_settings(struct request_queue *q);
#else
static inline void blk_queue_free_zone_bitmaps(struct request_queue *q) {}
+static inline void blk_queue_clear_zone_settings(struct request_queue *q) {}
#endif
int blk_alloc_devt(struct block_device *part, dev_t *devt);