[SCSI] libiscsi: change login data buffer allocation

This modifies the login buffer allocation to use __get_free_pages.
It will allow drivers that want to send this data with zero copy
operations to easily line things up on page boundaries.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c
index 80cbcdce7fa3b64c4d8304b89915c7d1c5283faa..c1bb74052aed83092546e66781afca7c8dc38d61 100644 (file)
--- a/drivers/scsi/libiscsi.c
+++ b/drivers/scsi/libiscsi.c
@@ -2284,7 +2284,8 @@ iscsi_conn_setup(struct iscsi_cls_session *cls_session, int dd_size,
        }
        spin_unlock_bh(&session->lock);
 
-       data = kmalloc(ISCSI_DEF_MAX_RECV_SEG_LEN, GFP_KERNEL);
+       data = (char *) __get_free_pages(GFP_KERNEL,
+                                        get_order(ISCSI_DEF_MAX_RECV_SEG_LEN));
        if (!data)
                goto login_task_data_alloc_fail;
        conn->login_task->data = conn->data = data;
@@ -2355,7 +2356,8 @@ void iscsi_conn_teardown(struct iscsi_cls_conn *cls_conn)
        iscsi_suspend_tx(conn);
 
        spin_lock_bh(&session->lock);
-       kfree(conn->data);
+       free_pages((unsigned long) conn->data,
+                  get_order(ISCSI_DEF_MAX_RECV_SEG_LEN));
        kfree(conn->persistent_address);
        __kfifo_put(session->cmdpool.queue, (void*)&conn->login_task,
                    sizeof(void*));