diff options
Diffstat (limited to 'fs/nfs/blocklayout')
| -rw-r--r-- | fs/nfs/blocklayout/dev.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/fs/nfs/blocklayout/dev.c b/fs/nfs/blocklayout/dev.c index 00f159da06ee..5aed4f98df41 100644 --- a/fs/nfs/blocklayout/dev.c +++ b/fs/nfs/blocklayout/dev.c @@ -150,10 +150,13 @@ static bool bl_map_stripe(struct pnfs_block_dev *dev, u64 offset, struct pnfs_block_dev_map *map) { struct pnfs_block_dev *child; - u64 chunk = (offset / dev->chunk_size); - int chunk_idx = chunk % dev->nr_children; + u64 chunk; + u32 chunk_idx; u64 disk_offset; + chunk = div_u64(offset, dev->chunk_size); + div_u64_rem(chunk, dev->nr_children, &chunk_idx); + if (chunk_idx > dev->nr_children) { dprintk("%s: invalid chunk idx %d (%lld/%lld)\n", __func__, chunk_idx, offset, dev->chunk_size); @@ -165,7 +168,7 @@ static bool bl_map_stripe(struct pnfs_block_dev *dev, u64 offset, offset = chunk * dev->chunk_size; /* disk offset of the stripe */ - disk_offset = offset / dev->nr_children; + disk_offset = div_u64(offset, dev->nr_children); child = &dev->children[chunk_idx]; child->map(child, disk_offset, map); |