diff options
Diffstat (limited to 'drivers/md/dm.h')
-rw-r--r-- | drivers/md/dm.h | 81 |
1 files changed, 8 insertions, 73 deletions
diff --git a/drivers/md/dm.h b/drivers/md/dm.h index fd90bc8f9e45..3c03c0ecab7e 100644 --- a/drivers/md/dm.h +++ b/drivers/md/dm.h | |||
@@ -2,7 +2,7 @@ | |||
2 | * Internal header file for device mapper | 2 | * Internal header file for device mapper |
3 | * | 3 | * |
4 | * Copyright (C) 2001, 2002 Sistina Software | 4 | * Copyright (C) 2001, 2002 Sistina Software |
5 | * Copyright (C) 2004 Red Hat, Inc. All rights reserved. | 5 | * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. |
6 | * | 6 | * |
7 | * This file is released under the LGPL. | 7 | * This file is released under the LGPL. |
8 | */ | 8 | */ |
@@ -17,9 +17,10 @@ | |||
17 | #include <linux/hdreg.h> | 17 | #include <linux/hdreg.h> |
18 | 18 | ||
19 | #define DM_NAME "device-mapper" | 19 | #define DM_NAME "device-mapper" |
20 | #define DMWARN(f, x...) printk(KERN_WARNING DM_NAME ": " f "\n" , ## x) | 20 | |
21 | #define DMERR(f, x...) printk(KERN_ERR DM_NAME ": " f "\n" , ## x) | 21 | #define DMERR(f, arg...) printk(KERN_ERR DM_NAME ": " DM_MSG_PREFIX ": " f "\n", ## arg) |
22 | #define DMINFO(f, x...) printk(KERN_INFO DM_NAME ": " f "\n" , ## x) | 22 | #define DMWARN(f, arg...) printk(KERN_WARNING DM_NAME ": " DM_MSG_PREFIX ": " f "\n", ## arg) |
23 | #define DMINFO(f, arg...) printk(KERN_INFO DM_NAME ": " DM_MSG_PREFIX ": " f "\n", ## arg) | ||
23 | 24 | ||
24 | #define DMEMIT(x...) sz += ((sz >= maxlen) ? \ | 25 | #define DMEMIT(x...) sz += ((sz >= maxlen) ? \ |
25 | 0 : scnprintf(result + sz, maxlen - sz, x)) | 26 | 0 : scnprintf(result + sz, maxlen - sz, x)) |
@@ -39,83 +40,16 @@ struct dm_dev { | |||
39 | }; | 40 | }; |
40 | 41 | ||
41 | struct dm_table; | 42 | struct dm_table; |
42 | struct mapped_device; | ||
43 | |||
44 | /*----------------------------------------------------------------- | ||
45 | * Functions for manipulating a struct mapped_device. | ||
46 | * Drop the reference with dm_put when you finish with the object. | ||
47 | *---------------------------------------------------------------*/ | ||
48 | int dm_create(struct mapped_device **md); | ||
49 | int dm_create_with_minor(unsigned int minor, struct mapped_device **md); | ||
50 | void dm_set_mdptr(struct mapped_device *md, void *ptr); | ||
51 | void *dm_get_mdptr(struct mapped_device *md); | ||
52 | struct mapped_device *dm_get_md(dev_t dev); | ||
53 | |||
54 | /* | ||
55 | * Reference counting for md. | ||
56 | */ | ||
57 | void dm_get(struct mapped_device *md); | ||
58 | void dm_put(struct mapped_device *md); | ||
59 | |||
60 | /* | ||
61 | * A device can still be used while suspended, but I/O is deferred. | ||
62 | */ | ||
63 | int dm_suspend(struct mapped_device *md, int with_lockfs); | ||
64 | int dm_resume(struct mapped_device *md); | ||
65 | |||
66 | /* | ||
67 | * The device must be suspended before calling this method. | ||
68 | */ | ||
69 | int dm_swap_table(struct mapped_device *md, struct dm_table *t); | ||
70 | |||
71 | /* | ||
72 | * Drop a reference on the table when you've finished with the | ||
73 | * result. | ||
74 | */ | ||
75 | struct dm_table *dm_get_table(struct mapped_device *md); | ||
76 | |||
77 | /* | ||
78 | * Event functions. | ||
79 | */ | ||
80 | uint32_t dm_get_event_nr(struct mapped_device *md); | ||
81 | int dm_wait_event(struct mapped_device *md, int event_nr); | ||
82 | |||
83 | /* | ||
84 | * Info functions. | ||
85 | */ | ||
86 | struct gendisk *dm_disk(struct mapped_device *md); | ||
87 | int dm_suspended(struct mapped_device *md); | ||
88 | |||
89 | /* | ||
90 | * Geometry functions. | ||
91 | */ | ||
92 | int dm_get_geometry(struct mapped_device *md, struct hd_geometry *geo); | ||
93 | int dm_set_geometry(struct mapped_device *md, struct hd_geometry *geo); | ||
94 | 43 | ||
95 | /*----------------------------------------------------------------- | 44 | /*----------------------------------------------------------------- |
96 | * Functions for manipulating a table. Tables are also reference | 45 | * Internal table functions. |
97 | * counted. | ||
98 | *---------------------------------------------------------------*/ | 46 | *---------------------------------------------------------------*/ |
99 | int dm_table_create(struct dm_table **result, int mode, | ||
100 | unsigned num_targets, struct mapped_device *md); | ||
101 | |||
102 | void dm_table_get(struct dm_table *t); | ||
103 | void dm_table_put(struct dm_table *t); | ||
104 | |||
105 | int dm_table_add_target(struct dm_table *t, const char *type, | ||
106 | sector_t start, sector_t len, char *params); | ||
107 | int dm_table_complete(struct dm_table *t); | ||
108 | void dm_table_event_callback(struct dm_table *t, | 47 | void dm_table_event_callback(struct dm_table *t, |
109 | void (*fn)(void *), void *context); | 48 | void (*fn)(void *), void *context); |
110 | void dm_table_event(struct dm_table *t); | ||
111 | sector_t dm_table_get_size(struct dm_table *t); | ||
112 | struct dm_target *dm_table_get_target(struct dm_table *t, unsigned int index); | 49 | struct dm_target *dm_table_get_target(struct dm_table *t, unsigned int index); |
113 | struct dm_target *dm_table_find_target(struct dm_table *t, sector_t sector); | 50 | struct dm_target *dm_table_find_target(struct dm_table *t, sector_t sector); |
114 | void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q); | 51 | void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q); |
115 | unsigned int dm_table_get_num_targets(struct dm_table *t); | ||
116 | struct list_head *dm_table_get_devices(struct dm_table *t); | 52 | struct list_head *dm_table_get_devices(struct dm_table *t); |
117 | int dm_table_get_mode(struct dm_table *t); | ||
118 | struct mapped_device *dm_table_get_md(struct dm_table *t); | ||
119 | void dm_table_presuspend_targets(struct dm_table *t); | 53 | void dm_table_presuspend_targets(struct dm_table *t); |
120 | void dm_table_postsuspend_targets(struct dm_table *t); | 54 | void dm_table_postsuspend_targets(struct dm_table *t); |
121 | void dm_table_resume_targets(struct dm_table *t); | 55 | void dm_table_resume_targets(struct dm_table *t); |
@@ -133,7 +67,6 @@ void dm_put_target_type(struct target_type *t); | |||
133 | int dm_target_iterate(void (*iter_func)(struct target_type *tt, | 67 | int dm_target_iterate(void (*iter_func)(struct target_type *tt, |
134 | void *param), void *param); | 68 | void *param), void *param); |
135 | 69 | ||
136 | |||
137 | /*----------------------------------------------------------------- | 70 | /*----------------------------------------------------------------- |
138 | * Useful inlines. | 71 | * Useful inlines. |
139 | *---------------------------------------------------------------*/ | 72 | *---------------------------------------------------------------*/ |
@@ -191,5 +124,7 @@ void dm_stripe_exit(void); | |||
191 | 124 | ||
192 | void *dm_vcalloc(unsigned long nmemb, unsigned long elem_size); | 125 | void *dm_vcalloc(unsigned long nmemb, unsigned long elem_size); |
193 | union map_info *dm_get_mapinfo(struct bio *bio); | 126 | union map_info *dm_get_mapinfo(struct bio *bio); |
127 | int dm_open_count(struct mapped_device *md); | ||
128 | int dm_lock_for_deletion(struct mapped_device *md); | ||
194 | 129 | ||
195 | #endif | 130 | #endif |