-
-#include <linux/raid/md.h>
+#include <linux/delay.h>
+#include <linux/raid/md_u.h>
+#include <linux/raid/md_p.h>
#include "do_mounts.h"
* The code for that is here.
*/
-static int __initdata raid_noautodetect, raid_autopart;
+#ifdef CONFIG_MD_AUTODETECT
+static int __initdata raid_noautodetect;
+#else
+static int __initdata raid_noautodetect=1;
+#endif
+static int __initdata raid_autopart;
static struct {
int minor;
int level;
int chunk;
char *device_names;
-} md_setup_args[MAX_MD_DEVS] __initdata;
+} md_setup_args[256] __initdata;
static int md_setup_ents __initdata;
-extern int mdp_major;
/*
* Parse the command-line parameters given our kernel, but do not
* actually try to invoke the MD device now; that is handled by
return 0;
}
str1 = str;
- if (minor >= MAX_MD_DEVS) {
- printk(KERN_WARNING "md: md=%d, Minor device number too high.\n", minor);
- return 0;
- }
for (ent=0 ; ent< md_setup_ents ; ent++)
if (md_setup_args[ent].minor == minor &&
md_setup_args[ent].partitioned == partitioned) {
"Replacing previous definition.\n", partitioned?"d":"", minor);
break;
}
- if (ent >= MAX_MD_DEVS) {
+ if (ent >= ARRAY_SIZE(md_setup_args)) {
printk(KERN_WARNING "md: md=%s%d - too many md initialisations\n", partitioned?"d":"", minor);
return 0;
}
return 1;
}
-#define MdpMinorShift 6
-
static void __init md_setup_drive(void)
{
int minor, i, ent, partitioned;
int err = 0;
char *devname;
mdu_disk_info_t dinfo;
- char name[16], devfs_name[16];
+ char name[16];
minor = md_setup_args[ent].minor;
partitioned = md_setup_args[ent].partitioned;
devname = md_setup_args[ent].device_names;
sprintf(name, "/dev/md%s%d", partitioned?"_d":"", minor);
- sprintf(devfs_name, "/dev/md/%s%d", partitioned?"d":"", minor);
if (partitioned)
dev = MKDEV(mdp_major, minor << MdpMinorShift);
else
dev = MKDEV(MD_MAJOR, minor);
- create_dev(name, dev, devfs_name);
- for (i = 0; i < MD_SB_DISKS && devname != 0; i++) {
+ create_dev(name, dev);
+ for (i = 0; i < MD_SB_DISKS && devname != NULL; i++) {
char *p;
char comp_name[64];
u32 rdev;
if (!strncmp(str, "noautodetect", wlen))
raid_noautodetect = 1;
+ if (!strncmp(str, "autodetect", wlen))
+ raid_noautodetect = 0;
if (strncmp(str, "partitionable", wlen)==0)
raid_autopart = 1;
if (strncmp(str, "part", wlen)==0)
__setup("raid=", raid_setup);
__setup("md=", md_setup);
+static void __init autodetect_raid(void)
+{
+ int fd;
+
+ /*
+ * Since we don't want to detect and use half a raid array, we need to
+ * wait for the known devices to complete their probing
+ */
+ printk(KERN_INFO "md: Waiting for all devices to be available before autodetect\n");
+ printk(KERN_INFO "md: If you don't use raid, use raid=noautodetect\n");
+
+ wait_for_device_probe();
+
+ fd = sys_open("/dev/md0", 0, 0);
+ if (fd >= 0) {
+ sys_ioctl(fd, RAID_AUTORUN, raid_autopart);
+ sys_close(fd);
+ }
+}
+
void __init md_run_setup(void)
{
- create_dev("/dev/md0", MKDEV(MD_MAJOR, 0), "md/0");
+ create_dev("/dev/md0", MKDEV(MD_MAJOR, 0));
+
if (raid_noautodetect)
- printk(KERN_INFO "md: Skipping autodetection of RAID arrays. (raid=noautodetect)\n");
- else {
- int fd = sys_open("/dev/md0", 0, 0);
- if (fd >= 0) {
- sys_ioctl(fd, RAID_AUTORUN, raid_autopart);
- sys_close(fd);
- }
- }
+ printk(KERN_INFO "md: Skipping autodetection of RAID arrays. (raid=autodetect will force)\n");
+ else
+ autodetect_raid();
md_setup_drive();
}