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| author | Darrick J. Wong <djwong@us.ibm.com> | 2006-03-27 01:17:54 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-27 08:44:59 -0800 |
| commit | 3ac51e741a46af7a20f55e79d3e3aeaa93c6c544 (patch) | |
| tree | cab595a4d9691d7602616337b7862a1a3d692b97 /drivers/md/dm.h | |
| parent | 1134e5ae79bab61c05657ca35a6297cf87202e35 (diff) | |
| download | blackbird-op-linux-3ac51e741a46af7a20f55e79d3e3aeaa93c6c544.tar.gz blackbird-op-linux-3ac51e741a46af7a20f55e79d3e3aeaa93c6c544.zip | |
[PATCH] dm store geometry
Allow drive geometry to be stored with a new DM_DEV_SET_GEOMETRY ioctl.
Device-mapper will now respond to HDIO_GETGEO. If the geometry information is
not available, zero will be returned for all of the parameters.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
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/dm.h')
| -rw-r--r-- | drivers/md/dm.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/md/dm.h b/drivers/md/dm.h index 79e800051a10..fd90bc8f9e45 100644 --- a/drivers/md/dm.h +++ b/drivers/md/dm.h @@ -14,6 +14,7 @@ #include <linux/device-mapper.h> #include <linux/list.h> #include <linux/blkdev.h> +#include <linux/hdreg.h> #define DM_NAME "device-mapper" #define DMWARN(f, x...) printk(KERN_WARNING DM_NAME ": " f "\n" , ## x) @@ -85,6 +86,12 @@ int dm_wait_event(struct mapped_device *md, int event_nr); 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. |
