1/*
2 * ----------------------------------------------------------------------------
3 * "THE BEER-WARE LICENSE" (Revision 42):
4 * <phk@FreeBSD.ORG> wrote this file. As long as you retain this notice you
5 * can do whatever you want with this stuff. If we meet some day, and you think
6 * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
7 * ----------------------------------------------------------------------------
8 *
9 * $FreeBSD: head/sys/dev/md/md.c 111815 2003-03-03 12:15:54Z phk $
10 *
11 */
12
13/*
14 * The following functions are based in the vn(4) driver: mdstart_swap(),
15 * mdstart_vnode(), mdcreate_swap(), mdcreate_vnode() and mddestroy(),
16 * and as such under the following copyright:
17 *

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114static int mdunits;
115static dev_t status_dev = 0;
116
117#define CDEV_MAJOR 95
118
119static d_ioctl_t mdctlioctl;
120
121static struct cdevsw mdctl_cdevsw = {
122 .d_open = nullopen,
123 .d_close = nullclose,
124 .d_ioctl = mdctlioctl,
125 .d_name = MD_NAME,
126 .d_maj = CDEV_MAJOR
127};
128
129
130static LIST_HEAD(, md_s) md_softc_list = LIST_HEAD_INITIALIZER(&md_softc_list);
131
132#define NINDIR (PAGE_SIZE / sizeof(uintptr_t))
133#define NMASK (NINDIR-1)
134static int nshift;

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