target: Use array_zalloc for device_list
Turns an order-8 allocation into slab-sized ones, thereby preventing
allocation failures with memory fragmentation.
This likely saves memory as well, as the slab allocator can pack objects
more tightly than the buddy allocator.
(nab: Fix lio-core patch fuzz)
Signed-off-by: Joern Engel <joern@logfs.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
diff --git a/drivers/target/target_core_tpg.c b/drivers/target/target_core_tpg.c
index 146fe47..c0fecde 100644
--- a/drivers/target/target_core_tpg.c
+++ b/drivers/target/target_core_tpg.c
@@ -64,7 +64,7 @@
spin_lock_irq(&nacl->device_list_lock);
for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) {
- deve = &nacl->device_list[i];
+ deve = nacl->device_list[i];
if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS))
continue;
@@ -259,15 +259,15 @@
struct se_dev_entry *deve;
int i;
- nacl->device_list = kzalloc(sizeof(struct se_dev_entry) *
- TRANSPORT_MAX_LUNS_PER_TPG, GFP_KERNEL);
+ nacl->device_list = array_zalloc(TRANSPORT_MAX_LUNS_PER_TPG,
+ sizeof(struct se_dev_entry), GFP_KERNEL);
if (!nacl->device_list) {
pr_err("Unable to allocate memory for"
" struct se_node_acl->device_list\n");
return -ENOMEM;
}
for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) {
- deve = &nacl->device_list[i];
+ deve = nacl->device_list[i];
atomic_set(&deve->ua_count, 0);
atomic_set(&deve->pr_ref_count, 0);