aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/md/dm.h
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/md/dm.h')
-rw-r--r--drivers/md/dm.h75
1 files changed, 1 insertions, 74 deletions
diff --git a/drivers/md/dm.h b/drivers/md/dm.h
index 2901ab943191..71ddd1e23007 100644
--- a/drivers/md/dm.h
+++ b/drivers/md/dm.h
@@ -39,88 +39,16 @@ struct dm_dev {
39}; 39};
40 40
41struct dm_table; 41struct dm_table;
42struct mapped_device;
43 42
44/*----------------------------------------------------------------- 43/*-----------------------------------------------------------------
45 * Functions for manipulating a struct mapped_device. 44 * Internal table functions.
46 * Drop the reference with dm_put when you finish with the object.
47 *---------------------------------------------------------------*/ 45 *---------------------------------------------------------------*/
48
49/*
50 * DM_ANY_MINOR allocates any available minor number.
51 */
52#define DM_ANY_MINOR (-1)
53int dm_create(int minor, struct mapped_device **md);
54
55void dm_set_mdptr(struct mapped_device *md, void *ptr);
56void *dm_get_mdptr(struct mapped_device *md);
57
58/*
59 * Reference counting for md.
60 */
61void dm_get(struct mapped_device *md);
62struct mapped_device *dm_get_md(dev_t dev);
63void dm_put(struct mapped_device *md);
64
65/*
66 * A device can still be used while suspended, but I/O is deferred.
67 */
68int dm_suspend(struct mapped_device *md, int with_lockfs);
69int dm_resume(struct mapped_device *md);
70
71/*
72 * The device must be suspended before calling this method.
73 */
74int dm_swap_table(struct mapped_device *md, struct dm_table *t);
75
76/*
77 * Drop a reference on the table when you've finished with the
78 * result.
79 */
80struct dm_table *dm_get_table(struct mapped_device *md);
81
82/*
83 * Event functions.
84 */
85uint32_t dm_get_event_nr(struct mapped_device *md);
86int dm_wait_event(struct mapped_device *md, int event_nr);
87
88/*
89 * Info functions.
90 */
91struct gendisk *dm_disk(struct mapped_device *md);
92int dm_suspended(struct mapped_device *md);
93
94/*
95 * Geometry functions.
96 */
97int dm_get_geometry(struct mapped_device *md, struct hd_geometry *geo);
98int dm_set_geometry(struct mapped_device *md, struct hd_geometry *geo);
99
100/*-----------------------------------------------------------------
101 * Functions for manipulating a table. Tables are also reference
102 * counted.
103 *---------------------------------------------------------------*/
104int dm_table_create(struct dm_table **result, int mode,
105 unsigned num_targets, struct mapped_device *md);
106
107void dm_table_get(struct dm_table *t);
108void dm_table_put(struct dm_table *t);
109
110int dm_table_add_target(struct dm_table *t, const char *type,
111 sector_t start, sector_t len, char *params);
112int dm_table_complete(struct dm_table *t);
113void dm_table_event_callback(struct dm_table *t, 46void dm_table_event_callback(struct dm_table *t,
114 void (*fn)(void *), void *context); 47 void (*fn)(void *), void *context);
115void dm_table_event(struct dm_table *t);
116sector_t dm_table_get_size(struct dm_table *t);
117struct dm_target *dm_table_get_target(struct dm_table *t, unsigned int index); 48struct dm_target *dm_table_get_target(struct dm_table *t, unsigned int index);
118struct dm_target *dm_table_find_target(struct dm_table *t, sector_t sector); 49struct dm_target *dm_table_find_target(struct dm_table *t, sector_t sector);
119void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q); 50void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q);
120unsigned int dm_table_get_num_targets(struct dm_table *t);
121struct list_head *dm_table_get_devices(struct dm_table *t); 51struct list_head *dm_table_get_devices(struct dm_table *t);
122int dm_table_get_mode(struct dm_table *t);
123struct mapped_device *dm_table_get_md(struct dm_table *t);
124void dm_table_presuspend_targets(struct dm_table *t); 52void dm_table_presuspend_targets(struct dm_table *t);
125void dm_table_postsuspend_targets(struct dm_table *t); 53void dm_table_postsuspend_targets(struct dm_table *t);
126void dm_table_resume_targets(struct dm_table *t); 54void dm_table_resume_targets(struct dm_table *t);
@@ -138,7 +66,6 @@ void dm_put_target_type(struct target_type *t);
138int dm_target_iterate(void (*iter_func)(struct target_type *tt, 66int dm_target_iterate(void (*iter_func)(struct target_type *tt,
139 void *param), void *param); 67 void *param), void *param);
140 68
141
142/*----------------------------------------------------------------- 69/*-----------------------------------------------------------------
143 * Useful inlines. 70 * Useful inlines.
144 *---------------------------------------------------------------*/ 71 *---------------------------------------------------------------*/