diff options
Diffstat (limited to 'include/linux/device-mapper.h')
| -rw-r--r-- | include/linux/device-mapper.h | 28 |
1 files changed, 24 insertions, 4 deletions
diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index bcc6d7b69470..cd4faaf5d427 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -93,7 +93,14 @@ typedef void (*dm_status_fn) (struct dm_target *ti, status_type_t status_type, typedef int (*dm_message_fn) (struct dm_target *ti, unsigned int argc, char **argv, char *result, unsigned int maxlen); -typedef int (*dm_prepare_ioctl_fn) (struct dm_target *ti, struct block_device **bdev); +/* + * Called with *forward == true. If it remains true, the ioctl should be + * forwarded to bdev. If it is reset to false, the target already fully handled + * the ioctl and the return value is the return value for the whole ioctl. + */ +typedef int (*dm_prepare_ioctl_fn) (struct dm_target *ti, struct block_device **bdev, + unsigned int cmd, unsigned long arg, + bool *forward); #ifdef CONFIG_BLK_DEV_ZONED typedef int (*dm_report_zones_fn) (struct dm_target *ti, @@ -149,7 +156,7 @@ typedef int (*dm_busy_fn) (struct dm_target *ti); */ typedef long (*dm_dax_direct_access_fn) (struct dm_target *ti, pgoff_t pgoff, long nr_pages, enum dax_access_mode node, void **kaddr, - pfn_t *pfn); + unsigned long *pfn); typedef int (*dm_dax_zero_page_range_fn)(struct dm_target *ti, pgoff_t pgoff, size_t nr_pages); @@ -531,12 +538,18 @@ void dm_submit_bio_remap(struct bio *clone, struct bio *tgt_clone); #ifdef CONFIG_BLK_DEV_ZONED struct dm_report_zones_args { struct dm_target *tgt; + struct gendisk *disk; sector_t next_sector; - void *orig_data; - report_zones_cb orig_cb; unsigned int zone_idx; + /* for block layer ->report_zones */ + struct blk_report_zones_args *rep_args; + + /* for internal users */ + report_zones_cb cb; + void *data; + /* must be filled by ->report_zones before calling dm_report_zones_cb */ sector_t start; }; @@ -742,4 +755,11 @@ static inline unsigned long to_bytes(sector_t n) return (n << SECTOR_SHIFT); } +static inline void dm_stack_bs_limits(struct queue_limits *limits, unsigned int bs) +{ + limits->logical_block_size = max(limits->logical_block_size, bs); + limits->physical_block_size = max(limits->physical_block_size, bs); + limits->io_min = max(limits->io_min, bs); +} + #endif /* _LINUX_DEVICE_MAPPER_H */ |