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|
***************
*** 1453,1542 ****
return 1;
}
- #undef OLD_LEVEL
-
- static int device_size_calculation(mddev_t * mddev)
- {
- int data_disks = 0;
- unsigned int readahead;
- struct list_head *tmp;
- mdk_rdev_t *rdev;
-
- /*
- * Do device size calculation. Bail out if too small.
- * (we have to do this after having validated chunk_size,
- * because device size has to be modulo chunk_size)
- */
-
- ITERATE_RDEV(mddev,rdev,tmp) {
- if (rdev->faulty)
- continue;
- if (rdev->size < mddev->chunk_size / 1024) {
- printk(KERN_WARNING
- "md: Dev %s smaller than chunk_size:"
- " %lluk < %dk\n",
- bdev_partition_name(rdev->bdev),
- (unsigned long long)rdev->size,
- mddev->chunk_size / 1024);
- return -EINVAL;
- }
- }
-
- switch (mddev->level) {
- case LEVEL_MULTIPATH:
- data_disks = 1;
- break;
- case -3:
- data_disks = 1;
- break;
- case -2:
- data_disks = 1;
- break;
- case LEVEL_LINEAR:
- zoned_raid_size(mddev);
- data_disks = 1;
- break;
- case 0:
- zoned_raid_size(mddev);
- data_disks = mddev->raid_disks;
- break;
- case 1:
- data_disks = 1;
- break;
- case 4:
- case 5:
- data_disks = mddev->raid_disks-1;
- break;
- default:
- printk(KERN_ERR "md: md%d: unsupported raid level %d\n",
- mdidx(mddev), mddev->level);
- goto abort;
- }
- if (!md_size[mdidx(mddev)])
- md_size[mdidx(mddev)] = mddev->size * data_disks;
-
- readahead = (VM_MAX_READAHEAD * 1024) / PAGE_SIZE;
- if (!mddev->level || (mddev->level == 4) || (mddev->level == 5)) {
- readahead = (mddev->chunk_size>>PAGE_SHIFT) * 4 * data_disks;
- if (readahead < data_disks * (MAX_SECTORS>>(PAGE_SHIFT-9))*2)
- readahead = data_disks * (MAX_SECTORS>>(PAGE_SHIFT-9))*2;
- } else {
- // (no multipath branch - it uses the default setting)
- if (mddev->level == -3)
- readahead = 0;
- }
-
- printk(KERN_INFO "md%d: max total readahead window set to %ldk\n",
- mdidx(mddev), readahead*(PAGE_SIZE/1024));
-
- printk(KERN_INFO
- "md%d: %d data-disks, max readahead per data-disk: %ldk\n",
- mdidx(mddev), data_disks, readahead/data_disks*(PAGE_SIZE/1024));
- return 0;
- abort:
- return 1;
- }
-
static struct gendisk *md_probe(dev_t dev, int *part, void *data)
{
static DECLARE_MUTEX(disks_sem);
--- 1436,1441 ----
return 1;
}
static struct gendisk *md_probe(dev_t dev, int *part, void *data)
{
static DECLARE_MUTEX(disks_sem);
***************
*** 1664,1672 ****
}
}
- if (device_size_calculation(mddev))
- return -EINVAL;
-
/*
* Drop all container device buffers, from now on
* the only valid external interface is through the md
--- 1571,1576 ----
}
}
/*
* Drop all container device buffers, from now on
* the only valid external interface is through the md
|
