diff options
| -rw-r--r-- | drivers/md/md.c | 33 | ||||
| -rw-r--r-- | include/linux/raid/md_k.h | 5 | ||||
| -rw-r--r-- | init/do_mounts_md.c | 8 |
3 files changed, 18 insertions, 28 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index db1ac84a739..40cb79ac403 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -3409,6 +3409,7 @@ static void autorun_devices(int part) printk(KERN_INFO "md: autorun ...\n"); while (!list_empty(&pending_raid_disks)) { + int unit; dev_t dev; LIST_HEAD(candidates); rdev0 = list_entry(pending_raid_disks.next, @@ -3428,16 +3429,19 @@ static void autorun_devices(int part) * mostly sane superblocks. It's time to allocate the * mddev. */ - if (rdev0->preferred_minor < 0 || rdev0->preferred_minor >= MAX_MD_DEVS) { + if (part) { + dev = MKDEV(mdp_major, + rdev0->preferred_minor << MdpMinorShift); + unit = MINOR(dev) >> MdpMinorShift; + } else { + dev = MKDEV(MD_MAJOR, rdev0->preferred_minor); + unit = MINOR(dev); + } + if (rdev0->preferred_minor != unit) { printk(KERN_INFO "md: unit number in %s is bad: %d\n", bdevname(rdev0->bdev, b), rdev0->preferred_minor); break; } - if (part) - dev = MKDEV(mdp_major, - rdev0->preferred_minor << MdpMinorShift); - else - dev = MKDEV(MD_MAJOR, rdev0->preferred_minor); md_probe(dev, NULL, NULL); mddev = mddev_find(dev); @@ -5524,22 +5528,15 @@ static void md_geninit(void) static int __init md_init(void) { - printk(KERN_INFO "md: md driver %d.%d.%d MAX_MD_DEVS=%d," - " MD_SB_DISKS=%d\n", - MD_MAJOR_VERSION, MD_MINOR_VERSION, - MD_PATCHLEVEL_VERSION, MAX_MD_DEVS, MD_SB_DISKS); - printk(KERN_INFO "md: bitmap version %d.%d\n", BITMAP_MAJOR_HI, - BITMAP_MINOR); - if (register_blkdev(MAJOR_NR, "md")) return -1; if ((mdp_major=register_blkdev(0, "mdp"))<=0) { unregister_blkdev(MAJOR_NR, "md"); return -1; } - blk_register_region(MKDEV(MAJOR_NR, 0), MAX_MD_DEVS, THIS_MODULE, - md_probe, NULL, NULL); - blk_register_region(MKDEV(mdp_major, 0), MAX_MD_DEVS<<MdpMinorShift, THIS_MODULE, + blk_register_region(MKDEV(MAJOR_NR, 0), 1UL<<MINORBITS, THIS_MODULE, + md_probe, NULL, NULL); + blk_register_region(MKDEV(mdp_major, 0), 1UL<<MINORBITS, THIS_MODULE, md_probe, NULL, NULL); register_reboot_notifier(&md_notifier); @@ -5598,8 +5595,8 @@ static __exit void md_exit(void) mddev_t *mddev; struct list_head *tmp; - blk_unregister_region(MKDEV(MAJOR_NR,0), MAX_MD_DEVS); - blk_unregister_region(MKDEV(mdp_major,0), MAX_MD_DEVS << MdpMinorShift); + blk_unregister_region(MKDEV(MAJOR_NR,0), 1U << MINORBITS); + blk_unregister_region(MKDEV(mdp_major,0), 1U << MINORBITS); unregister_blkdev(MAJOR_NR,"md"); unregister_blkdev(mdp_major, "mdp"); diff --git a/include/linux/raid/md_k.h b/include/linux/raid/md_k.h index e423dad1a7f..8245c282168 100644 --- a/include/linux/raid/md_k.h +++ b/include/linux/raid/md_k.h @@ -31,18 +31,15 @@ #define LEVEL_NONE (-1000000) #define MaxSector (~(sector_t)0) -#define MD_THREAD_NAME_MAX 14 typedef struct mddev_s mddev_t; typedef struct mdk_rdev_s mdk_rdev_t; -#define MAX_MD_DEVS 256 /* Max number of md dev */ - /* * options passed in raidrun: */ -/* Currently this must fix in an 'int' */ +/* Currently this must fit in an 'int' */ #define MAX_CHUNK_SIZE (1<<30) /* diff --git a/init/do_mounts_md.c b/init/do_mounts_md.c index 2429e1bf8c6..753dc54a664 100644 --- a/init/do_mounts_md.c +++ b/init/do_mounts_md.c @@ -20,7 +20,7 @@ static struct { 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; @@ -61,10 +61,6 @@ static int __init md_setup(char *str) 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) { @@ -72,7 +68,7 @@ static int __init md_setup(char *str) "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; } |