diff options
Diffstat (limited to 'drivers/target/iscsi/iscsi_target_util.c')
| -rw-r--r-- | drivers/target/iscsi/iscsi_target_util.c | 27 |
1 files changed, 20 insertions, 7 deletions
diff --git a/drivers/target/iscsi/iscsi_target_util.c b/drivers/target/iscsi/iscsi_target_util.c index 5784cad16be1..8d85d8cceb42 100644 --- a/drivers/target/iscsi/iscsi_target_util.c +++ b/drivers/target/iscsi/iscsi_target_util.c @@ -19,6 +19,7 @@ ******************************************************************************/ #include <linux/list.h> +#include <linux/percpu_ida.h> #include <scsi/scsi_tcq.h> #include <scsi/iscsi_proto.h> #include <target/target_core_base.h> @@ -156,13 +157,15 @@ void iscsit_free_r2ts_from_list(struct iscsi_cmd *cmd) struct iscsi_cmd *iscsit_allocate_cmd(struct iscsi_conn *conn, gfp_t gfp_mask) { struct iscsi_cmd *cmd; - int priv_size = conn->conn_transport->priv_size; + struct se_session *se_sess = conn->sess->se_sess; + int size, tag; - cmd = kzalloc(sizeof(struct iscsi_cmd) + priv_size, gfp_mask); - if (!cmd) { - pr_err("Unable to allocate memory for struct iscsi_cmd.\n"); - return NULL; - } + tag = percpu_ida_alloc(&se_sess->sess_tag_pool, gfp_mask); + size = sizeof(struct iscsi_cmd) + conn->conn_transport->priv_size; + cmd = (struct iscsi_cmd *)(se_sess->sess_cmd_map + (tag * size)); + memset(cmd, 0, size); + + cmd->se_cmd.map_tag = tag; cmd->conn = conn; INIT_LIST_HEAD(&cmd->i_conn_node); INIT_LIST_HEAD(&cmd->datain_list); @@ -678,6 +681,16 @@ void iscsit_free_queue_reqs_for_conn(struct iscsi_conn *conn) void iscsit_release_cmd(struct iscsi_cmd *cmd) { + struct iscsi_session *sess; + struct se_cmd *se_cmd = &cmd->se_cmd; + + if (cmd->conn) + sess = cmd->conn->sess; + else + sess = cmd->sess; + + BUG_ON(!sess || !sess->se_sess); + kfree(cmd->buf_ptr); kfree(cmd->pdu_list); kfree(cmd->seq_list); @@ -685,7 +698,7 @@ void iscsit_release_cmd(struct iscsi_cmd *cmd) kfree(cmd->iov_data); kfree(cmd->text_in_ptr); - kfree(cmd); + percpu_ida_free(&sess->se_sess->sess_tag_pool, se_cmd->map_tag); } EXPORT_SYMBOL(iscsit_release_cmd); |