diff options
Diffstat (limited to 'include/linux/device-mapper.h')
| -rw-r--r-- | include/linux/device-mapper.h | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index 0d8d419d191a..08d783592b73 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -9,11 +9,12 @@ #define _LINUX_DEVICE_MAPPER_H #include <linux/bio.h> +#include <linux/blkdev.h> struct dm_target; struct dm_table; -struct dm_dev; struct mapped_device; +struct bio_vec; typedef enum { STATUSTYPE_INFO, STATUSTYPE_TABLE } status_type_t; @@ -72,6 +73,9 @@ typedef int (*dm_ioctl_fn) (struct dm_target *ti, struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg); +typedef int (*dm_merge_fn) (struct dm_target *ti, struct bvec_merge_data *bvm, + struct bio_vec *biovec, int max_size); + void dm_error(const char *message); /* @@ -79,6 +83,12 @@ void dm_error(const char *message); */ void dm_set_device_limits(struct dm_target *ti, struct block_device *bdev); +struct dm_dev { + struct block_device *bdev; + int mode; + char name[16]; +}; + /* * Constructors should call these functions to ensure destination devices * are opened/closed correctly. @@ -107,6 +117,7 @@ struct target_type { dm_status_fn status; dm_message_fn message; dm_ioctl_fn ioctl; + dm_merge_fn merge; }; struct io_restrictions { @@ -196,6 +207,7 @@ int dm_copy_name_and_uuid(struct mapped_device *md, char *name, char *uuid); struct gendisk *dm_disk(struct mapped_device *md); int dm_suspended(struct mapped_device *md); int dm_noflush_suspending(struct dm_target *ti); +union map_info *dm_get_mapinfo(struct bio *bio); /* * Geometry functions. @@ -226,6 +238,11 @@ int dm_table_add_target(struct dm_table *t, const char *type, int dm_table_complete(struct dm_table *t); /* + * Unplug all devices in a table. + */ +void dm_table_unplug_all(struct dm_table *t); + +/* * Table reference counting. */ struct dm_table *dm_get_table(struct mapped_device *md); @@ -250,6 +267,11 @@ void dm_table_event(struct dm_table *t); */ int dm_swap_table(struct mapped_device *md, struct dm_table *t); +/* + * A wrapper around vmalloc. + */ +void *dm_vcalloc(unsigned long nmemb, unsigned long elem_size); + /*----------------------------------------------------------------- * Macros. *---------------------------------------------------------------*/ |