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-rw-r--r--drivers/md/raid5.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 2930fc26a852..1aebd3ef80b7 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -3703,6 +3703,8 @@ static int make_request(struct request_queue *q, struct bio * bi)
return 0;
}
+static sector_t raid5_size(mddev_t *mddev, sector_t sectors, int raid_disks);
+
static sector_t reshape_request(mddev_t *mddev, sector_t sector_nr, int *skipped)
{
/* reshaping is quite different to recovery/resync so it is
@@ -3781,7 +3783,7 @@ static sector_t reshape_request(mddev_t *mddev, sector_t sector_nr, int *skipped
j == sh->qd_idx)
continue;
s = compute_blocknr(sh, j);
- if (s < mddev->array_sectors) {
+ if (s < raid5_size(mddev, 0, 0)) {
skipped = 1;
continue;
}
@@ -4700,6 +4702,9 @@ static int raid5_resize(mddev_t *mddev, sector_t sectors)
sectors &= ~((sector_t)mddev->chunk_size/512 - 1);
md_set_array_sectors(mddev, raid5_size(mddev, sectors,
mddev->raid_disks));
+ if (mddev->array_sectors >
+ raid5_size(mddev, sectors, mddev->raid_disks))
+ return -EINVAL;
set_capacity(mddev->gendisk, mddev->array_sectors);
mddev->changed = 1;
if (sectors > mddev->dev_sectors && mddev->recovery_cp == MaxSector) {
@@ -4837,7 +4842,7 @@ static void end_reshape(raid5_conf_t *conf)
if (!test_bit(MD_RECOVERY_INTR, &conf->mddev->recovery)) {
mddev_t *mddev = conf->mddev;
- md_set_array_sectors(mddev, raid5_size(mddev, 0,
+ md_set_array_sectors_lock(mddev, raid5_size(mddev, 0,
conf->raid_disks));
set_capacity(mddev->gendisk, mddev->array_sectors);
mddev->changed = 1;
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