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md: Make mddev->size sector-based.

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This patch renames the "size" field of struct mddev_s to "dev_sectors"
and stores the number of 512-byte sectors instead of the number of
1K-blocks in it.

All users of that field, including raid levels 1,4-6,10, are adjusted
accordingly. This simplifies the code a bit because it allows to get
rid of a couple of divisions/multiplications by two.

In order to make checkpatch happy, some minor coding style issues
have also been addressed. In particular, size_store() now uses
strict_strtoull() instead of simple_strtoull().

Signed-off-by: Andre Noll <maan@systemlinux.org>
Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
Andre Noll
2009-03-31 14:33:13 +11:00
committed by NeilBrown
parent 575a80fa4f
commit 58c0fed400
8 changed files with 78 additions and 68 deletions
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10
drivers/md/raid1.c
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@@ -1726,7 +1726,7 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, i
return 0;
}
max_sector = mddev->size << 1;
max_sector = mddev->dev_sectors;
if (sector_nr >= max_sector) {
/* If we aborted, we need to abort the
* sync on the 'current' bitmap chunk (there will
@@ -2051,7 +2051,7 @@ static int run(mddev_t *mddev)
/*
* Ok, everything is just fine now
*/
mddev->array_sectors = mddev->size * 2;
mddev->array_sectors = mddev->dev_sectors;
mddev->queue->unplug_fn = raid1_unplug;
mddev->queue->backing_dev_info.congested_fn = raid1_congested;
@@ -2116,12 +2116,12 @@ static int raid1_resize(mddev_t *mddev, sector_t sectors)
mddev->array_sectors = sectors;
set_capacity(mddev->gendisk, mddev->array_sectors);
mddev->changed = 1;
if (mddev->array_sectors / 2 > mddev->size &&
if (mddev->array_sectors > mddev->dev_sectors &&
mddev->recovery_cp == MaxSector) {
mddev->recovery_cp = mddev->size << 1;
mddev->recovery_cp = mddev->dev_sectors;
set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
}
mddev->size = mddev->array_sectors / 2;
mddev->dev_sectors = mddev->array_sectors;
mddev->resync_max_sectors = sectors;
return 0;
}