As with previous commit, this results in less average memory use, and
allows lun count to no longer be restrained by the array size.

Remove array_free and array_zalloc.

For some reason, sbp fabric needs core_search lun, so export it for now.

Remove core_alloc_lun, it duplicates core_tpg_alloc_lun.

Change core_dev_add_lun to take a se_lun and return int

Signed-off-by: Andy Grover <agro...@redhat.com>
---
 drivers/target/sbp/sbp_target.c              |   25 ++---
 drivers/target/target_core_device.c          |   79 +-----------
 drivers/target/target_core_fabric_configfs.c |   27 ++---
 drivers/target/target_core_internal.h        |    5 +-
 drivers/target/target_core_tpg.c             |  168 ++++++++++++-------------
 include/target/target_core_base.h            |   11 +--
 include/target/target_core_fabric.h          |    3 +
 7 files changed, 116 insertions(+), 202 deletions(-)

diff --git a/drivers/target/sbp/sbp_target.c b/drivers/target/sbp/sbp_target.c
index e1ceae5..103998c 100644
--- a/drivers/target/sbp/sbp_target.c
+++ b/drivers/target/sbp/sbp_target.c
@@ -185,9 +185,8 @@ static struct se_lun *sbp_get_lun_from_tpg(struct sbp_tpg 
*tpg, int lun)
                return ERR_PTR(-EINVAL);
 
        spin_lock(&se_tpg->tpg_lun_lock);
-       se_lun = se_tpg->tpg_lun_list[lun];
-
-       if (se_lun->lun_status != TRANSPORT_LUN_STATUS_ACTIVE)
+       se_lun = core_search_lun(se_tpg, lun);
+       if (!se_lun)
                se_lun = ERR_PTR(-ENODEV);
 
        spin_unlock(&se_tpg->tpg_lun_lock);
@@ -1936,15 +1935,11 @@ static char *sbp_parse_pr_out_transport_id(
 
 static int sbp_count_se_tpg_luns(struct se_portal_group *tpg)
 {
-       int i, count = 0;
+       int count = 0;
+       struct rb_node *node;
 
        spin_lock(&tpg->tpg_lun_lock);
-       for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) {
-               struct se_lun *se_lun = tpg->tpg_lun_list[i];
-
-               if (se_lun->lun_status == TRANSPORT_LUN_STATUS_FREE)
-                       continue;
-
+       for (node = rb_first(&tpg->rb_tpg_lun_list); node; node = 
rb_next(node)) {
                count++;
        }
        spin_unlock(&tpg->tpg_lun_lock);
@@ -1954,8 +1949,9 @@ static int sbp_count_se_tpg_luns(struct se_portal_group 
*tpg)
 
 static int sbp_update_unit_directory(struct sbp_tport *tport)
 {
-       int num_luns, num_entries, idx = 0, mgt_agt_addr, ret, i;
+       int num_luns, num_entries, idx = 0, mgt_agt_addr, ret;
        u32 *data;
+       struct rb_node *node;
 
        if (tport->unit_directory.data) {
                fw_core_remove_descriptor(&tport->unit_directory);
@@ -2017,14 +2013,11 @@ static int sbp_update_unit_directory(struct sbp_tport 
*tport)
        data[idx++] = 0x8d000000 | (num_luns + 1);
 
        spin_lock(&tport->tpg->se_tpg.tpg_lun_lock);
-       for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) {
-               struct se_lun *se_lun = tport->tpg->se_tpg.tpg_lun_list[i];
+       for (node = rb_first(&tport->tpg->se_tpg.rb_tpg_lun_list); node; node = 
rb_next(node)) {
+               struct se_lun *se_lun = container_of(node, struct se_lun, 
rb_node);
                struct se_device *dev;
                int type;
 
-               if (se_lun->lun_status == TRANSPORT_LUN_STATUS_FREE)
-                       continue;
-
                spin_unlock(&tport->tpg->se_tpg.tpg_lun_lock);
 
                dev = se_lun->lun_se_dev;
diff --git a/drivers/target/target_core_device.c 
b/drivers/target/target_core_device.c
index a18724b..f2e1415 100644
--- a/drivers/target/target_core_device.c
+++ b/drivers/target/target_core_device.c
@@ -1117,22 +1117,17 @@ int se_dev_set_block_size(struct se_device *dev, u32 
block_size)
        return 0;
 }
 
-struct se_lun *core_dev_add_lun(
+int core_dev_add_lun(
        struct se_portal_group *tpg,
        struct se_device *dev,
-       u32 unpacked_lun)
+       struct se_lun *lun)
 {
-       struct se_lun *lun;
        int rc;
 
-       lun = core_tpg_alloc_lun(tpg, unpacked_lun);
-       if (IS_ERR(lun))
-               return lun;
-
        rc = core_tpg_add_lun(tpg, lun,
                                TRANSPORT_LUNFLAGS_READ_WRITE, dev);
        if (rc < 0)
-               return ERR_PTR(rc);
+               return rc;
 
        pr_debug("%s_TPG[%u]_LUN[%u] - Activated %s Logical Unit from"
                " CORE HBA: %u\n", tpg->se_tpg_tfo->get_fabric_name(),
@@ -1157,7 +1152,7 @@ struct se_lun *core_dev_add_lun(
                spin_unlock_irq(&tpg->acl_node_lock);
        }
 
-       return lun;
+       return rc;
 }
 
 /*      core_dev_del_lun():
@@ -1178,68 +1173,6 @@ void core_dev_del_lun(
        core_tpg_free_lun(tpg, lun);
 }
 
-struct se_lun *core_get_lun_from_tpg(struct se_portal_group *tpg, u32 
unpacked_lun)
-{
-       struct se_lun *lun;
-
-       spin_lock(&tpg->tpg_lun_lock);
-       if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) {
-               pr_err("%s LUN: %u exceeds TRANSPORT_MAX_LUNS"
-                       "_PER_TPG-1: %u for Target Portal Group: %hu\n",
-                       tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun,
-                       TRANSPORT_MAX_LUNS_PER_TPG-1,
-                       tpg->se_tpg_tfo->tpg_get_tag(tpg));
-               spin_unlock(&tpg->tpg_lun_lock);
-               return NULL;
-       }
-       lun = tpg->tpg_lun_list[unpacked_lun];
-
-       if (lun->lun_status != TRANSPORT_LUN_STATUS_FREE) {
-               pr_err("%s Logical Unit Number: %u is not free on"
-                       " Target Portal Group: %hu, ignoring request.\n",
-                       tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun,
-                       tpg->se_tpg_tfo->tpg_get_tag(tpg));
-               spin_unlock(&tpg->tpg_lun_lock);
-               return NULL;
-       }
-       spin_unlock(&tpg->tpg_lun_lock);
-
-       return lun;
-}
-
-/*      core_dev_get_lun():
- *
- *
- */
-static struct se_lun *core_dev_get_lun(struct se_portal_group *tpg, u32 
unpacked_lun)
-{
-       struct se_lun *lun;
-
-       spin_lock(&tpg->tpg_lun_lock);
-       if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) {
-               pr_err("%s LUN: %u exceeds TRANSPORT_MAX_LUNS_PER"
-                       "_TPG-1: %u for Target Portal Group: %hu\n",
-                       tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun,
-                       TRANSPORT_MAX_LUNS_PER_TPG-1,
-                       tpg->se_tpg_tfo->tpg_get_tag(tpg));
-               spin_unlock(&tpg->tpg_lun_lock);
-               return NULL;
-       }
-       lun = tpg->tpg_lun_list[unpacked_lun];
-
-       if (lun->lun_status != TRANSPORT_LUN_STATUS_ACTIVE) {
-               pr_err("%s Logical Unit Number: %u is not active on"
-                       " Target Portal Group: %hu, ignoring request.\n",
-                       tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun,
-                       tpg->se_tpg_tfo->tpg_get_tag(tpg));
-               spin_unlock(&tpg->tpg_lun_lock);
-               return NULL;
-       }
-       spin_unlock(&tpg->tpg_lun_lock);
-
-       return lun;
-}
-
 struct se_lun_acl *core_dev_init_initiator_node_lun_acl(
        struct se_portal_group *tpg,
        struct se_node_acl *nacl,
@@ -1279,7 +1212,9 @@ int core_dev_add_initiator_node_lun_acl(
        struct se_lun *lun;
        struct se_node_acl *nacl;
 
-       lun = core_dev_get_lun(tpg, unpacked_lun);
+       spin_lock(&tpg->tpg_lun_lock);
+       lun = core_search_lun(tpg, unpacked_lun);
+       spin_unlock(&tpg->tpg_lun_lock);
        if (!lun) {
                pr_err("%s Logical Unit Number: %u is not active on"
                        " Target Portal Group: %hu, ignoring request.\n",
diff --git a/drivers/target/target_core_fabric_configfs.c 
b/drivers/target/target_core_fabric_configfs.c
index eaaed43..1a31b46 100644
--- a/drivers/target/target_core_fabric_configfs.c
+++ b/drivers/target/target_core_fabric_configfs.c
@@ -756,7 +756,6 @@ static int target_fabric_port_link(
        struct config_item *tpg_ci;
        struct se_lun *lun = container_of(to_config_group(lun_ci),
                                struct se_lun, lun_group);
-       struct se_lun *lun_p;
        struct se_portal_group *se_tpg;
        struct se_device *dev =
                container_of(to_config_group(se_dev_ci), struct se_device, 
dev_group);
@@ -784,11 +783,10 @@ static int target_fabric_port_link(
                return -EEXIST;
        }
 
-       lun_p = core_dev_add_lun(se_tpg, dev, lun->unpacked_lun);
-       if (IS_ERR(lun_p)) {
+       ret = core_dev_add_lun(se_tpg, dev, lun);
+       if (ret < 0) {
                pr_err("core_dev_add_lun() failed\n");
-               ret = PTR_ERR(lun_p);
-               goto out;
+               return ret;
        }
 
        if (tf->tf_ops.fabric_post_link) {
@@ -801,8 +799,6 @@ static int target_fabric_port_link(
        }
 
        return 0;
-out:
-       return ret;
 }
 
 static int target_fabric_port_unlink(
@@ -888,15 +884,16 @@ static struct config_group *target_fabric_make_lun(
        if (unpacked_lun > UINT_MAX)
                return ERR_PTR(-EINVAL);
 
-       lun = core_get_lun_from_tpg(se_tpg, unpacked_lun);
-       if (!lun)
-               return ERR_PTR(-EINVAL);
+       lun = core_tpg_alloc_lun(se_tpg, unpacked_lun);
+       if (IS_ERR(lun))
+               return ERR_CAST(lun);
 
        lun_cg = &lun->lun_group;
        lun_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
                                GFP_KERNEL);
        if (!lun_cg->default_groups) {
                pr_err("Unable to allocate lun_cg->default_groups\n");
+               core_tpg_free_lun(se_tpg, lun);
                return ERR_PTR(-ENOMEM);
        }
 
@@ -912,16 +909,14 @@ static struct config_group *target_fabric_make_lun(
                                GFP_KERNEL);
        if (!port_stat_grp->default_groups) {
                pr_err("Unable to allocate port_stat_grp->default_groups\n");
-               errno = -ENOMEM;
-               goto out;
+               kfree(lun_cg->default_groups);
+               core_tpg_free_lun(se_tpg, lun);
+               return ERR_PTR(-ENOMEM);
        }
+
        target_stat_setup_port_default_groups(lun);
 
        return &lun->lun_group;
-out:
-       if (lun_cg)
-               kfree(lun_cg->default_groups);
-       return ERR_PTR(errno);
 }
 
 static void target_fabric_drop_lun(
diff --git a/drivers/target/target_core_internal.h 
b/drivers/target/target_core_internal.h
index 3803dd8..ed4d514 100644
--- a/drivers/target/target_core_internal.h
+++ b/drivers/target/target_core_internal.h
@@ -45,9 +45,8 @@ int   se_dev_set_max_sectors(struct se_device *, u32);
 int    se_dev_set_fabric_max_sectors(struct se_device *, u32);
 int    se_dev_set_optimal_sectors(struct se_device *, u32);
 int    se_dev_set_block_size(struct se_device *, u32);
-struct se_lun *core_dev_add_lun(struct se_portal_group *, struct se_device *, 
u32);
+int    core_dev_add_lun(struct se_portal_group *, struct se_device *, struct 
se_lun *);
 void   core_dev_del_lun(struct se_portal_group *, struct se_lun *);
-struct se_lun *core_get_lun_from_tpg(struct se_portal_group *, u32);
 struct se_lun_acl *core_dev_init_initiator_node_lun_acl(struct se_portal_group 
*,
                struct se_node_acl *, u32, int *);
 int    core_dev_add_initiator_node_lun_acl(struct se_portal_group *,
@@ -94,6 +93,8 @@ int   core_tpg_add_lun(struct se_portal_group *, struct 
se_lun *,
                u32, struct se_device *);
 void core_tpg_free_lun(struct se_portal_group *, struct se_lun *);
 void core_tpg_remove_lun(struct se_portal_group *, struct se_lun *);
+bool core_insert_lun(struct se_portal_group *tpg, struct se_lun *lun);
+struct se_lun *core_search_lun(struct se_portal_group *tpg, u32 mapped_lun);
 
 static inline void release_deve(struct kref *kref)
 {
diff --git a/drivers/target/target_core_tpg.c b/drivers/target/target_core_tpg.c
index 3efa7c1..0467ad8 100644
--- a/drivers/target/target_core_tpg.c
+++ b/drivers/target/target_core_tpg.c
@@ -109,6 +109,50 @@ struct se_node_acl *core_tpg_get_initiator_node_acl(
 }
 EXPORT_SYMBOL(core_tpg_get_initiator_node_acl);
 
+bool core_insert_lun(struct se_portal_group *tpg, struct se_lun *lun)
+{
+       struct rb_root *root = &tpg->rb_tpg_lun_list;
+       struct rb_node **new = &(root->rb_node), *parent = NULL;
+
+       /* Figure out where to put new node */
+       while (*new) {
+               struct se_lun *this = rb_entry(*new, struct se_lun, rb_node);
+
+               parent = *new;
+               if (lun->unpacked_lun < this->unpacked_lun)
+                       new = &((*new)->rb_left);
+               else if (lun->unpacked_lun > this->unpacked_lun)
+                       new = &((*new)->rb_right);
+               else
+                       return false;
+       }
+
+       /* Add new node and rebalance tree. */
+       rb_link_node(&lun->rb_node, parent, new);
+       rb_insert_color(&lun->rb_node, root);
+
+       return true;
+}
+
+struct se_lun *core_search_lun(struct se_portal_group *tpg, u32 unpacked_lun)
+{
+       struct rb_root *root = &tpg->rb_tpg_lun_list;
+       struct rb_node *node = root->rb_node;
+
+       while (node) {
+               struct se_lun *lun = rb_entry(node, struct se_lun, rb_node);
+
+               if (unpacked_lun < lun->unpacked_lun)
+                       node = node->rb_left;
+               else if (unpacked_lun > lun->unpacked_lun)
+                       node = node->rb_right;
+               else
+                       return lun;
+       }
+       return NULL;
+}
+EXPORT_SYMBOL(core_search_lun);
+
 /*     core_tpg_add_node_to_devs():
  *
  *
@@ -117,16 +161,13 @@ void core_tpg_add_node_to_devs(
        struct se_node_acl *acl,
        struct se_portal_group *tpg)
 {
-       int i = 0;
        u32 lun_access = 0;
-       struct se_lun *lun;
        struct se_device *dev;
+       struct rb_node *node;
 
        spin_lock(&tpg->tpg_lun_lock);
-       for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) {
-               lun = tpg->tpg_lun_list[i];
-               if (lun->lun_status != TRANSPORT_LUN_STATUS_ACTIVE)
-                       continue;
+       for (node = rb_first(&tpg->rb_tpg_lun_list); node; node = 
rb_next(node)) {
+               struct se_lun *lun = rb_entry(node, struct se_lun, rb_node);
 
                spin_unlock(&tpg->tpg_lun_lock);
 
@@ -180,35 +221,6 @@ static int core_set_queue_depth_for_node(
        return 0;
 }
 
-void array_free(void *array, int n)
-{
-       void **a = array;
-       int i;
-
-       for (i = 0; i < n; i++)
-               kfree(a[i]);
-       kfree(a);
-}
-
-static void *array_zalloc(int n, size_t size, gfp_t flags)
-{
-       void **a;
-       int i;
-
-       a = kzalloc(n * sizeof(void*), flags);
-       if (!a)
-               return NULL;
-       for (i = 0; i < n; i++) {
-               a[i] = kzalloc(size, flags);
-               if (!a[i]) {
-                       array_free(a, n);
-                       return NULL;
-               }
-       }
-       return a;
-}
-
-
 /*     core_tpg_check_initiator_node_acl()
  *
  *
@@ -284,15 +296,13 @@ void core_tpg_wait_for_nacl_pr_ref(struct se_node_acl 
*nacl)
 
 void core_tpg_clear_object_luns(struct se_portal_group *tpg)
 {
-       int i;
-       struct se_lun *lun;
+       struct rb_node *node;
 
        spin_lock(&tpg->tpg_lun_lock);
-       for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) {
-               lun = tpg->tpg_lun_list[i];
+       for (node = rb_first(&tpg->rb_tpg_lun_list); node; node = 
rb_next(node)) {
+               struct se_lun *lun = rb_entry(node, struct se_lun, rb_node);
 
-               if ((lun->lun_status != TRANSPORT_LUN_STATUS_ACTIVE) ||
-                   (lun->lun_se_dev == NULL))
+               if (!lun->lun_se_dev)
                        continue;
 
                spin_unlock(&tpg->tpg_lun_lock);
@@ -607,7 +617,7 @@ static int core_tpg_setup_virtual_lun0(struct 
se_portal_group *se_tpg)
        int ret;
 
        lun->unpacked_lun = 0;
-       lun->lun_status = TRANSPORT_LUN_STATUS_FREE;
+       lun->lun_link_magic = SE_LUN_LINK_MAGIC;
        atomic_set(&lun->lun_acl_count, 0);
        init_completion(&lun->lun_shutdown_comp);
        INIT_LIST_HEAD(&lun->lun_acl_list);
@@ -638,30 +648,6 @@ int core_tpg_register(
        void *tpg_fabric_ptr,
        int se_tpg_type)
 {
-       struct se_lun *lun;
-       u32 i;
-
-       se_tpg->tpg_lun_list = array_zalloc(TRANSPORT_MAX_LUNS_PER_TPG,
-                       sizeof(struct se_lun), GFP_KERNEL);
-       if (!se_tpg->tpg_lun_list) {
-               pr_err("Unable to allocate struct se_portal_group->"
-                               "tpg_lun_list\n");
-               return -ENOMEM;
-       }
-
-       for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) {
-               lun = se_tpg->tpg_lun_list[i];
-               lun->unpacked_lun = i;
-               lun->lun_link_magic = SE_LUN_LINK_MAGIC;
-               lun->lun_status = TRANSPORT_LUN_STATUS_FREE;
-               atomic_set(&lun->lun_acl_count, 0);
-               init_completion(&lun->lun_shutdown_comp);
-               INIT_LIST_HEAD(&lun->lun_acl_list);
-               spin_lock_init(&lun->lun_acl_lock);
-               spin_lock_init(&lun->lun_sep_lock);
-               init_completion(&lun->lun_ref_comp);
-       }
-
        se_tpg->se_tpg_type = se_tpg_type;
        se_tpg->se_tpg_fabric_ptr = tpg_fabric_ptr;
        se_tpg->se_tpg_tfo = tfo;
@@ -673,13 +659,11 @@ int core_tpg_register(
        spin_lock_init(&se_tpg->acl_node_lock);
        spin_lock_init(&se_tpg->session_lock);
        spin_lock_init(&se_tpg->tpg_lun_lock);
+       se_tpg->rb_tpg_lun_list = RB_ROOT;
 
        if (se_tpg->se_tpg_type == TRANSPORT_TPG_TYPE_NORMAL) {
-               if (core_tpg_setup_virtual_lun0(se_tpg) < 0) {
-                       array_free(se_tpg->tpg_lun_list,
-                                  TRANSPORT_MAX_LUNS_PER_TPG);
+               if (core_tpg_setup_virtual_lun0(se_tpg) < 0)
                        return -ENOMEM;
-               }
        }
 
        spin_lock_bh(&tpg_lock);
@@ -737,7 +721,10 @@ int core_tpg_deregister(struct se_portal_group *se_tpg)
                core_tpg_release_virtual_lun0(se_tpg);
 
        se_tpg->se_tpg_fabric_ptr = NULL;
-       array_free(se_tpg->tpg_lun_list, TRANSPORT_MAX_LUNS_PER_TPG);
+
+       /* Shouldn't be able to release tpg if luns present */
+       WARN_ON_ONCE(!RB_EMPTY_ROOT(&se_tpg->rb_tpg_lun_list));
+
        return 0;
 }
 EXPORT_SYMBOL(core_tpg_deregister);
@@ -757,15 +744,28 @@ struct se_lun *core_tpg_alloc_lun(
                return ERR_PTR(-EOVERFLOW);
        }
 
+       lun = kzalloc(sizeof(*lun), GFP_KERNEL);
+       if (!lun)
+               return ERR_PTR(-ENOMEM);
+
+       lun->unpacked_lun = unpacked_lun;
+       lun->lun_link_magic = SE_LUN_LINK_MAGIC;
+       atomic_set(&lun->lun_acl_count, 0);
+       init_completion(&lun->lun_shutdown_comp);
+       INIT_LIST_HEAD(&lun->lun_acl_list);
+       spin_lock_init(&lun->lun_acl_lock);
+       spin_lock_init(&lun->lun_sep_lock);
+       init_completion(&lun->lun_ref_comp);
+
        spin_lock(&tpg->tpg_lun_lock);
-       lun = tpg->tpg_lun_list[unpacked_lun];
-       if (lun->lun_status == TRANSPORT_LUN_STATUS_ACTIVE) {
-               pr_err("TPG Logical Unit Number: %u is already active"
-                       " on %s Target Portal Group: %u, ignoring request.\n",
-                       unpacked_lun, tpg->se_tpg_tfo->get_fabric_name(),
+       if (!core_insert_lun(tpg, lun)) {
+               pr_err("%s Logical Unit Number: %u is not free on"
+                       " Target Portal Group: %hu, ignoring request.\n",
+                       tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun,
                        tpg->se_tpg_tfo->tpg_get_tag(tpg));
                spin_unlock(&tpg->tpg_lun_lock);
-               return ERR_PTR(-EINVAL);
+               kfree(lun);
+               return ERR_PTR(-EEXIST);
        }
        spin_unlock(&tpg->tpg_lun_lock);
 
@@ -792,7 +792,6 @@ int core_tpg_add_lun(
 
        spin_lock(&tpg->tpg_lun_lock);
        lun->lun_access = lun_access;
-       lun->lun_status = TRANSPORT_LUN_STATUS_ACTIVE;
        spin_unlock(&tpg->tpg_lun_lock);
 
        return 0;
@@ -812,16 +811,11 @@ void core_tpg_free_lun(
                return;
        }
 
+       WARN_ON_ONCE(!list_empty(&lun->lun_acl_list));
+
        spin_lock(&tpg->tpg_lun_lock);
-       if (lun->lun_status != TRANSPORT_LUN_STATUS_ACTIVE) {
-               pr_err("%s Logical Unit Number: %u is not active on"
-                       " Target Portal Group: %u, ignoring request.\n",
-                       tpg->se_tpg_tfo->get_fabric_name(), lun->unpacked_lun,
-                       tpg->se_tpg_tfo->tpg_get_tag(tpg));
-               spin_unlock(&tpg->tpg_lun_lock);
-               return;
-       }
-       lun->lun_status = TRANSPORT_LUN_STATUS_FREE;
+       rb_erase(&lun->rb_node, &tpg->rb_tpg_lun_list);
+       kfree(lun);
        spin_unlock(&tpg->tpg_lun_lock);
 }
 
diff --git a/include/target/target_core_base.h 
b/include/target/target_core_base.h
index 3f54fee..06f9bea 100644
--- a/include/target/target_core_base.h
+++ b/include/target/target_core_base.h
@@ -122,12 +122,6 @@ enum hba_flags_table {
        HBA_FLAGS_PSCSI_MODE    = 0x02,
 };
 
-/* struct se_lun->lun_status */
-enum transport_lun_status_table {
-       TRANSPORT_LUN_STATUS_FREE = 0,
-       TRANSPORT_LUN_STATUS_ACTIVE = 1,
-};
-
 /* struct se_portal_group->se_tpg_type */
 enum transport_tpg_type_table {
        TRANSPORT_TPG_TYPE_NORMAL = 0,
@@ -634,10 +628,9 @@ struct se_port_stat_grps {
 };
 
 struct se_lun {
+       struct rb_node          rb_node;
 #define SE_LUN_LINK_MAGIC                      0xffff7771
        u32                     lun_link_magic;
-       /* See transport_lun_status_table */
-       enum transport_lun_status_table lun_status;
        u32                     lun_access;
        u32                     lun_flags;
        u32                     unpacked_lun;
@@ -804,7 +797,7 @@ struct se_portal_group {
        struct list_head        se_tpg_node;
        /* linked list for initiator ACL list */
        struct list_head        acl_node_list;
-       struct se_lun           **tpg_lun_list;
+       struct rb_root          rb_tpg_lun_list;
        struct se_lun           tpg_virt_lun0;
        /* List of TCM sessions associated wth this TPG */
        struct list_head        tpg_sess_list;
diff --git a/include/target/target_core_fabric.h 
b/include/target/target_core_fabric.h
index 4cf4fda..0267780 100644
--- a/include/target/target_core_fabric.h
+++ b/include/target/target_core_fabric.h
@@ -154,6 +154,9 @@ int core_tpg_register(struct target_core_fabric_ops *, 
struct se_wwn *,
                struct se_portal_group *, void *, int);
 int    core_tpg_deregister(struct se_portal_group *);
 
+/* SBP needs this. TODO: fix */
+struct se_lun *core_search_lun(struct se_portal_group *tpg, u32 unpacked_lun);
+
 /* SAS helpers */
 u8     sas_get_fabric_proto_ident(struct se_portal_group *);
 u32    sas_get_pr_transport_id(struct se_portal_group *, struct se_node_acl *,
-- 
1.7.1

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