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md: fix sync_completed reporting for very large drives (>2TB) 

The values exported in the sync_completed file are unsigned long, which
overflows with very large drives, resulting in wrong values reported.

Since sync_completed uses sectors as unit, we'll start getting wrong
values with components larger than 2TB.

This patch simply replaces the use of unsigned long by unsigned long long.

Signed-off-by: Rémi Rérolle <rrerolle@lacie.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
Rémi Rérolle 2011-01-14 09:14:34 +11:00 committed by NeilBrown
parent 23ddff3792
commit 13ae864bc8
1 changed files with 2 additions and 2 deletions
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4
drivers/md/md.c
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@ -3918,7 +3918,7 @@ static struct md_sysfs_entry md_sync_speed = __ATTR_RO(sync_speed);
static ssize_t
sync_completed_show(mddev_t *mddev, char *page)
{
unsigned long max_sectors, resync;
unsigned long long max_sectors, resync;
if (!test_bit(MD_RECOVERY_RUNNING, &mddev->recovery))
return sprintf(page, "none\n");
@ -3929,7 +3929,7 @@ sync_completed_show(mddev_t *mddev, char *page)
max_sectors = mddev->dev_sectors;
resync = mddev->curr_resync_completed;
return sprintf(page, "%lu / %lu\n", resync, max_sectors);
return sprintf(page, "%llu / %llu\n", resync, max_sectors);
}
static struct md_sysfs_entry md_sync_completed = __ATTR_RO(sync_completed);