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[SCSI] libiscsi: change login data buffer allocation

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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>
This commit is contained in:
Mike Christie 2008-12-02 00:32:09 -06:00 committed by James Bottomley
parent e2bac7c55e
commit cfeb2cf957
1 changed files with 4 additions and 2 deletions
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6
drivers/scsi/libiscsi.c
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@ -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*));