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authorAlasdair G Kergon <agk@redhat.com>2006-06-26 00:27:33 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-26 09:58:36 -0700
commit17b2f66f2a39a4e4d1ed456f35ee3bb598e41d35 (patch)
tree64801e095918f685fa83bface7f8289e33bb9bcd /drivers/md
parent2b06cfff12f0f87c4bc4d4c4dd76997e72c360ba (diff)
downloadop-kernel-dev-17b2f66f2a39a4e4d1ed456f35ee3bb598e41d35.zip
op-kernel-dev-17b2f66f2a39a4e4d1ed456f35ee3bb598e41d35.tar.gz
[PATCH] dm: add exports
Move definitions of core device-mapper functions for manipulating mapped devices and their tables to <linux/device-mapper.h> advertising their availability for use elsewhere in the kernel. Protect the contents of device-mapper.h with ifdef __KERNEL__. And throw in a few formatting clean-ups and extra comments. Signed-off-by: Alasdair G Kergon <agk@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/md')
-rw-r--r--drivers/md/dm.c12
-rw-r--r--drivers/md/dm.h75
2 files changed, 7 insertions, 80 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 59bf797..952c49c 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -50,9 +50,9 @@ struct target_io {
union map_info *dm_get_mapinfo(struct bio *bio)
{
- if (bio && bio->bi_private)
- return &((struct target_io *)bio->bi_private)->info;
- return NULL;
+ if (bio && bio->bi_private)
+ return &((struct target_io *)bio->bi_private)->info;
+ return NULL;
}
#define MINOR_ALLOCED ((void *)-1)
@@ -474,8 +474,8 @@ static void __map_bio(struct dm_target *ti, struct bio *clone,
if (r > 0) {
/* the bio has been remapped so dispatch it */
- blk_add_trace_remap(bdev_get_queue(clone->bi_bdev), clone,
- tio->io->bio->bi_bdev->bd_dev, sector,
+ blk_add_trace_remap(bdev_get_queue(clone->bi_bdev), clone,
+ tio->io->bio->bi_bdev->bd_dev, sector,
clone->bi_sector);
generic_make_request(clone);
@@ -1042,7 +1042,7 @@ static struct mapped_device *dm_find_md(dev_t dev)
md = idr_find(&_minor_idr, minor);
if (md && (md == MINOR_ALLOCED ||
(dm_disk(md)->first_minor != minor) ||
- test_bit(DMF_FREEING, &md->flags))) {
+ test_bit(DMF_FREEING, &md->flags))) {
md = NULL;
goto out;
}
diff --git a/drivers/md/dm.h b/drivers/md/dm.h
index 2901ab9..71ddd1e 100644
--- a/drivers/md/dm.h
+++ b/drivers/md/dm.h
@@ -39,88 +39,16 @@ struct dm_dev {
};
struct dm_table;
-struct mapped_device;
/*-----------------------------------------------------------------
- * Functions for manipulating a struct mapped_device.
- * Drop the reference with dm_put when you finish with the object.
+ * Internal table functions.
*---------------------------------------------------------------*/
-
-/*
- * DM_ANY_MINOR allocates any available minor number.
- */
-#define DM_ANY_MINOR (-1)
-int dm_create(int minor, struct mapped_device **md);
-
-void dm_set_mdptr(struct mapped_device *md, void *ptr);
-void *dm_get_mdptr(struct mapped_device *md);
-
-/*
- * Reference counting for md.
- */
-void dm_get(struct mapped_device *md);
-struct mapped_device *dm_get_md(dev_t dev);
-void dm_put(struct mapped_device *md);
-
-/*
- * A device can still be used while suspended, but I/O is deferred.
- */
-int dm_suspend(struct mapped_device *md, int with_lockfs);
-int dm_resume(struct mapped_device *md);
-
-/*
- * The device must be suspended before calling this method.
- */
-int dm_swap_table(struct mapped_device *md, struct dm_table *t);
-
-/*
- * Drop a reference on the table when you've finished with the
- * result.
- */
-struct dm_table *dm_get_table(struct mapped_device *md);
-
-/*
- * Event functions.
- */
-uint32_t dm_get_event_nr(struct mapped_device *md);
-int dm_wait_event(struct mapped_device *md, int event_nr);
-
-/*
- * Info functions.
- */
-struct gendisk *dm_disk(struct mapped_device *md);
-int dm_suspended(struct mapped_device *md);
-
-/*
- * Geometry functions.
- */
-int dm_get_geometry(struct mapped_device *md, struct hd_geometry *geo);
-int dm_set_geometry(struct mapped_device *md, struct hd_geometry *geo);
-
-/*-----------------------------------------------------------------
- * Functions for manipulating a table. Tables are also reference
- * counted.
- *---------------------------------------------------------------*/
-int dm_table_create(struct dm_table **result, int mode,
- unsigned num_targets, struct mapped_device *md);
-
-void dm_table_get(struct dm_table *t);
-void dm_table_put(struct dm_table *t);
-
-int dm_table_add_target(struct dm_table *t, const char *type,
- sector_t start, sector_t len, char *params);
-int dm_table_complete(struct dm_table *t);
void dm_table_event_callback(struct dm_table *t,
void (*fn)(void *), void *context);
-void dm_table_event(struct dm_table *t);
-sector_t dm_table_get_size(struct dm_table *t);
struct dm_target *dm_table_get_target(struct dm_table *t, unsigned int index);
struct dm_target *dm_table_find_target(struct dm_table *t, sector_t sector);
void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q);
-unsigned int dm_table_get_num_targets(struct dm_table *t);
struct list_head *dm_table_get_devices(struct dm_table *t);
-int dm_table_get_mode(struct dm_table *t);
-struct mapped_device *dm_table_get_md(struct dm_table *t);
void dm_table_presuspend_targets(struct dm_table *t);
void dm_table_postsuspend_targets(struct dm_table *t);
void dm_table_resume_targets(struct dm_table *t);
@@ -138,7 +66,6 @@ void dm_put_target_type(struct target_type *t);
int dm_target_iterate(void (*iter_func)(struct target_type *tt,
void *param), void *param);
-
/*-----------------------------------------------------------------
* Useful inlines.
*---------------------------------------------------------------*/
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