From 3ac51e741a46af7a20f55e79d3e3aeaa93c6c544 Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" Date: Mon, 27 Mar 2006 01:17:54 -0800 Subject: [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 Signed-off-by: Alasdair G Kergon Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/md/dm.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'drivers/md/dm.h') 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 #include #include +#include #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. -- cgit v1.2.3