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-rw-r--r--module/zfs/dmu.c10
-rw-r--r--module/zfs/dmu_tx.c2
2 files changed, 11 insertions, 1 deletions
diff --git a/module/zfs/dmu.c b/module/zfs/dmu.c
index 1136e1d70..72fce35c5 100644
--- a/module/zfs/dmu.c
+++ b/module/zfs/dmu.c
@@ -672,6 +672,16 @@ dmu_free_long_range(objset_t *os, uint64_t object,
if (err != 0)
return (err);
err = dmu_free_long_range_impl(os, dn, offset, length);
+
+ /*
+ * It is important to zero out the maxblkid when freeing the entire
+ * file, so that (a) subsequent calls to dmu_free_long_range_impl()
+ * will take the fast path, and (b) dnode_reallocate() can verify
+ * that the entire file has been freed.
+ */
+ if (offset == 0 && length == DMU_OBJECT_END)
+ dn->dn_maxblkid = 0;
+
dnode_rele(dn, FTAG);
return (err);
}
diff --git a/module/zfs/dmu_tx.c b/module/zfs/dmu_tx.c
index 1fe1099a8..ece6b14b3 100644
--- a/module/zfs/dmu_tx.c
+++ b/module/zfs/dmu_tx.c
@@ -633,7 +633,7 @@ dmu_tx_hold_free(dmu_tx_t *tx, uint64_t object, uint64_t off, uint64_t len)
*/
if (dn->dn_datablkshift == 0) {
if (off != 0 || len < dn->dn_datablksz)
- dmu_tx_count_write(txh, off, len);
+ dmu_tx_count_write(txh, 0, dn->dn_datablksz);
} else {
/* first block will be modified if it is not aligned */
if (!IS_P2ALIGNED(off, 1 << dn->dn_datablkshift))