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Add comment about dm_dev minor, and change it to 32bit value we realy not

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going to use so much device minor numbers.
This commit is contained in:
haad 2010-12-06 08:54:49 +00:00
parent c0795be10b
commit 50cad777f0
2 changed files with 5 additions and 5 deletions
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4
sys/dev/dm/dm.h
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@ -1,4 +1,4 @@
/* $NetBSD: dm.h,v 1.19 2010/10/23 21:18:54 haad Exp $ */
/* $NetBSD: dm.h,v 1.20 2010/12/06 08:54:49 haad Exp $ */
/*
* Copyright (c) 2008 The NetBSD Foundation, Inc.
@ -124,7 +124,7 @@ typedef struct dm_dev {
char uuid[DM_UUID_LEN];
device_t devt; /* pointer to autoconf device_t structure */
uint64_t minor;
uint64_t minor; /* Device minor number */
uint32_t flags; /* store communication protocol flags */
kmutex_t dev_mtx; /* mutex for generall device lock */

6
sys/dev/dm/dm_ioctl.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: dm_ioctl.c,v 1.22 2010/05/18 15:01:17 haad Exp $ */
/* $NetBSD: dm_ioctl.c,v 1.23 2010/12/06 08:54:49 haad Exp $ */
/*
* Copyright (c) 2008 The NetBSD Foundation, Inc.
@ -93,7 +93,7 @@
#include "netbsd-dm.h"
#include "dm.h"
static uint64_t sc_minor_num;
static uint32_t sc_minor_num;
extern const struct dkdriver dmdkdriver;
uint64_t dm_dev_counter;
@ -236,7 +236,7 @@ dm_dev_create_ioctl(prop_dictionary_t dm_dict)
if (name)
strlcpy(dmv->name, name, DM_NAME_LEN);
dmv->minor = atomic_inc_64_nv(&sc_minor_num);
dmv->minor = (uint64_t)atomic_inc_32_nv(&sc_minor_num);
dmv->flags = 0; /* device flags are set when needed */
dmv->ref_cnt = 0;
dmv->event_nr = 0;