Illumos #2619 and #2747

[zfs.git] / module / zfs / zap.c

diff --git a/module/zfs/zap.c b/module/zfs/zap.c
index 288a4d9..59f62fa 100644 (file)
--- a/module/zfs/zap.c
+++ b/module/zfs/zap.c
@@ -20,6 +20,7 @@
  */
 /*
  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012 by Delphix. All rights reserved.
  */
 
 /*
@@ -114,7 +115,7 @@ fzap_upgrade(zap_t *zap, dmu_tx_t *tx, zap_flags_t flags)
            1<<FZAP_BLOCK_SHIFT(zap), FTAG, &db, DMU_READ_NO_PREFETCH));
        dmu_buf_will_dirty(db, tx);
 
-       l = kmem_zalloc(sizeof (zap_leaf_t), KM_SLEEP);
+       l = kmem_zalloc(sizeof (zap_leaf_t), KM_PUSHPAGE);
        l->l_dbuf = db;
        l->l_phys = db->db_data;
 
@@ -390,11 +391,11 @@ static zap_leaf_t *
 zap_create_leaf(zap_t *zap, dmu_tx_t *tx)
 {
        void *winner;
-       zap_leaf_t *l = kmem_alloc(sizeof (zap_leaf_t), KM_SLEEP);
+       zap_leaf_t *l = kmem_alloc(sizeof (zap_leaf_t), KM_PUSHPAGE);
 
        ASSERT(RW_WRITE_HELD(&zap->zap_rwlock));
 
-       rw_init(&l->l_rwlock, 0, 0, 0);
+       rw_init(&l->l_rwlock, NULL, RW_DEFAULT, NULL);
        rw_enter(&l->l_rwlock, RW_WRITER);
        l->l_blkid = zap_allocate_blocks(zap, 1);
        l->l_dbuf = NULL;
@@ -452,8 +453,8 @@ zap_open_leaf(uint64_t blkid, dmu_buf_t *db)
 
        ASSERT(blkid != 0);
 
-       l = kmem_alloc(sizeof (zap_leaf_t), KM_SLEEP);
-       rw_init(&l->l_rwlock, 0, 0, 0);
+       l = kmem_alloc(sizeof (zap_leaf_t), KM_PUSHPAGE);
+       rw_init(&l->l_rwlock, NULL, RW_DEFAULT, NULL);
        rw_enter(&l->l_rwlock, RW_WRITER);
        l->l_blkid = blkid;
        l->l_bs = highbit(db->db_size)-1;
@@ -483,7 +484,7 @@ zap_open_leaf(uint64_t blkid, dmu_buf_t *db)
        ASSERT3U(ZAP_LEAF_HASH_NUMENTRIES(l), >, ZAP_LEAF_NUMCHUNKS(l) / 3);
 
        /* The chunks should begin at the end of the hash table */
-       ASSERT3P(&ZAP_LEAF_CHUNK(l, 0), ==,
+       ASSERT3P(&ZAP_LEAF_CHUNK(l, 0), ==, (zap_leaf_chunk_t *)
            &l->l_phys->l_hash[ZAP_LEAF_HASH_NUMENTRIES(l)]);
 
        /* The chunks should end at the end of the block */
@@ -946,6 +947,19 @@ fzap_prefetch(zap_name_t *zn)
  * Helper functions for consumers.
  */
 
+uint64_t
+zap_create_link(objset_t *os, dmu_object_type_t ot, uint64_t parent_obj,
+    const char *name, dmu_tx_t *tx)
+{
+       uint64_t new_obj;
+
+       VERIFY((new_obj = zap_create(os, ot, DMU_OT_NONE, 0, tx)) > 0);
+       VERIFY(zap_add(os, parent_obj, name, sizeof (uint64_t), 1, &new_obj,
+           tx) == 0);
+
+       return (new_obj);
+}
+
 int
 zap_value_search(objset_t *os, uint64_t zapobj, uint64_t value, uint64_t mask,
     char *name)
@@ -957,7 +971,7 @@ zap_value_search(objset_t *os, uint64_t zapobj, uint64_t value, uint64_t mask,
        if (mask == 0)
                mask = -1ULL;
 
-       za = kmem_alloc(sizeof (zap_attribute_t), KM_SLEEP);
+       za = kmem_alloc(sizeof (zap_attribute_t), KM_PUSHPAGE);
        for (zap_cursor_init(&zc, os, zapobj);
            (err = zap_cursor_retrieve(&zc, za)) == 0;
            zap_cursor_advance(&zc)) {