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authorAlasdair G Kergon <agk@redhat.com>2006-06-26 11:27:32 +0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-26 20:58:36 +0400
commit2b06cfff12f0f87c4bc4d4c4dd76997e72c360ba (patch)
tree68e9085593ef64b78a60daec94898e620bf716c3 /drivers/md/dm.h
parent814d68629b40e863997fa0eea459be4cc99a06cc (diff)
downloadlinux-2b06cfff12f0f87c4bc4d4c4dd76997e72c360ba.tar.xz
[PATCH] dm: consolidate creation functions
Merge dm_create() and dm_create_with_minor() by introducing the special value DM_ANY_MINOR to request the allocation of the next available minor number. 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.h13
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/md/dm.h b/drivers/md/dm.h
index fd90bc8f9e45..2901ab943191 100644
--- a/drivers/md/dm.h
+++ b/drivers/md/dm.h
@@ -2,7 +2,7 @@
* Internal header file for device mapper
*
* Copyright (C) 2001, 2002 Sistina Software
- * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
*
* This file is released under the LGPL.
*/
@@ -45,16 +45,21 @@ struct mapped_device;
* Functions for manipulating a struct mapped_device.
* Drop the reference with dm_put when you finish with the object.
*---------------------------------------------------------------*/
-int dm_create(struct mapped_device **md);
-int dm_create_with_minor(unsigned int minor, struct mapped_device **md);
+
+/*
+ * 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);
-struct mapped_device *dm_get_md(dev_t dev);
/*
* 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);
/*