As 'array_size' is a 'sector_t', it may overflow inappropriately
when shifted 10 bits. So We should cast it to a loff_t first.
There are two places with this problem, but the second (in update_raid_disks)
isn't needed so just remove it:
The only personality that handles ->reshape currently is raid1,
and it doesn't change the size of the array.
When added for raid5/6, reshape again won't change the size of the array,
at least not straight away.
This code might be need for reshaping 'linear' but linear->shape,
if implemented, should probably do the i_size_write itself.
Signed-off-by: Neil Brown <[email protected]>
### Diffstat output
./drivers/md/md.c | 13 +------------
1 file changed, 1 insertion(+), 12 deletions(-)
diff ./drivers/md/md.c~current~ ./drivers/md/md.c
--- ./drivers/md/md.c~current~ 2006-01-24 13:30:25.000000000 +1100
+++ ./drivers/md/md.c 2006-01-24 13:32:25.000000000 +1100
@@ -3466,7 +3466,7 @@ static int update_size(mddev_t *mddev, u
bdev = bdget_disk(mddev->gendisk, 0);
if (bdev) {
mutex_lock(&bdev->bd_inode->i_mutex);
- i_size_write(bdev->bd_inode, mddev->array_size << 10);
+ i_size_write(bdev->bd_inode, (loff_t)mddev->array_size << 10);
mutex_unlock(&bdev->bd_inode->i_mutex);
bdput(bdev);
}
@@ -3486,17 +3486,6 @@ static int update_raid_disks(mddev_t *md
if (mddev->sync_thread)
return -EBUSY;
rv = mddev->pers->reshape(mddev, raid_disks);
- if (!rv) {
- struct block_device *bdev;
-
- bdev = bdget_disk(mddev->gendisk, 0);
- if (bdev) {
- mutex_lock(&bdev->bd_inode->i_mutex);
- i_size_write(bdev->bd_inode, mddev->array_size << 10);
- mutex_unlock(&bdev->bd_inode->i_mutex);
- bdput(bdev);
- }
- }
return rv;
}
-
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