diff options
Diffstat (limited to 'module/zfs/zap_micro.c')
| -rw-r--r-- | module/zfs/zap_micro.c | 46 |
1 files changed, 23 insertions, 23 deletions
diff --git a/module/zfs/zap_micro.c b/module/zfs/zap_micro.c index fbc93b423..528d31d5e 100644 --- a/module/zfs/zap_micro.c +++ b/module/zfs/zap_micro.c @@ -1068,7 +1068,7 @@ zap_get_stats(objset_t *os, uint64_t zapobj, zap_stats_t *zs) int zap_count_write(objset_t *os, uint64_t zapobj, const char *name, int add, - uint64_t *towrite, uint64_t *tooverwrite, uint64_t dn_datablkshift) + uint64_t *towrite, uint64_t *tooverwrite) { zap_t *zap; int err = 0; @@ -1113,28 +1113,28 @@ zap_count_write(objset_t *os, uint64_t zapobj, const char *name, int add, *towrite += (3 + (add ? 4 : 0)) * SPA_MAXBLOCKSIZE; } } else { - if (!add) { - if (dmu_buf_freeable(zap->zap_dbuf)) - *tooverwrite += SPA_MAXBLOCKSIZE; - else - *towrite += SPA_MAXBLOCKSIZE; - } else { - /* - * We are here if we are adding and (name != NULL). - * It is hard to find out if this add will promote this - * microzap to fatzap. Hence, we assume the worst case - * and account for the blocks assuming this microzap - * would be promoted to a fatzap. - * - * 1 block overwritten : header block - * 4 new blocks written : 2 new split leaf, 2 grown - * ptrtbl blocks - */ - if (dmu_buf_freeable(zap->zap_dbuf)) - *tooverwrite += 1 << dn_datablkshift; - else - *towrite += 1 << dn_datablkshift; - *towrite += 4 << dn_datablkshift; + /* + * We are here if (name != NULL) and this is a micro-zap. + * We account for the header block depending on whether it + * is freeable. + * + * Incase of an add-operation it is hard to find out + * if this add will promote this microzap to fatzap. + * Hence, we consider the worst case and account for the + * blocks assuming this microzap would be promoted to a + * fatzap. + * + * 1 block overwritten : header block + * 4 new blocks written : 2 new split leaf, 2 grown + * ptrtbl blocks + */ + if (dmu_buf_freeable(zap->zap_dbuf)) + *tooverwrite += SPA_MAXBLOCKSIZE; + else + *towrite += SPA_MAXBLOCKSIZE; + + if (add) { + *towrite += 4 * SPA_MAXBLOCKSIZE; } } |