diff options
Diffstat (limited to 'sys/contrib/openzfs/module/zfs/dmu.c')
| -rw-r--r-- | sys/contrib/openzfs/module/zfs/dmu.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/sys/contrib/openzfs/module/zfs/dmu.c b/sys/contrib/openzfs/module/zfs/dmu.c index f7f808d5b8f7..a7a5c89bdafb 100644 --- a/sys/contrib/openzfs/module/zfs/dmu.c +++ b/sys/contrib/openzfs/module/zfs/dmu.c @@ -759,6 +759,8 @@ dmu_prefetch_by_dnode(dnode_t *dn, int64_t level, uint64_t offset, */ uint8_t ibps = ibs - SPA_BLKPTRSHIFT; limit = P2ROUNDUP(dmu_prefetch_max, 1 << ibs) >> ibs; + if (limit == 0) + end2 = start2; do { level2++; start2 = P2ROUNDUP(start2, 1 << ibps) >> ibps; @@ -1689,8 +1691,8 @@ dmu_object_cached_size(objset_t *os, uint64_t object, dmu_object_info_from_dnode(dn, &doi); - for (uint64_t off = 0; off < doi.doi_max_offset; - off += dmu_prefetch_max) { + for (uint64_t off = 0; off < doi.doi_max_offset && + dmu_prefetch_max > 0; off += dmu_prefetch_max) { /* dbuf_read doesn't prefetch L1 blocks. */ dmu_prefetch_by_dnode(dn, 1, off, dmu_prefetch_max, ZIO_PRIORITY_SYNC_READ); |