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authorNicholas Bellinger <nab@linux-iscsi.org>2012-02-25 01:40:24 -0800
committerNicholas Bellinger <nab@linux-iscsi.org>2012-02-25 18:38:34 -0800
commitc7042cae58c13970f39c0820a3aab2a13dda9fe1 (patch)
tree63d75c4c8e37d9a26033ed11b47345b4ae697524 /drivers
parent3de55ec74aa803d7aa1e581700086d755c2599d2 (diff)
downloadop-kernel-dev-c7042cae58c13970f39c0820a3aab2a13dda9fe1.zip
op-kernel-dev-c7042cae58c13970f39c0820a3aab2a13dda9fe1.tar.gz
target: Fix target_submit_tmr se_tmr_req allocation failures
This patch makes target_submit_tmr() se_tmr_req allocation occur before target_get_sess_cmd(), and changes target_submit_tmr() to return a failure w/ non zero status to the fabric caller upon core_tmr_alloc_req() failure. Cc: Andy Grover <agrover@redhat.com> Cc: Kiran Patil <kiran.patil@intel.com> Cc: Arun Easi <arun.easi@qlogic.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/target/target_core_transport.c20
1 files changed, 11 insertions, 9 deletions
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index d44cbc2..96e78f3 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -1704,11 +1704,12 @@ EXPORT_SYMBOL(target_submit_cmd);
* @unpacked_lun: unpacked LUN to reference for struct se_lun
* @fabric_context: fabric context for TMR req
* @tm_type: Type of TM request
+ * @flags: submit cmd flags
*
* Callable from all contexts.
**/
-void target_submit_tmr(struct se_cmd *se_cmd, struct se_session *se_sess,
+int target_submit_tmr(struct se_cmd *se_cmd, struct se_session *se_sess,
unsigned char *sense, u32 unpacked_lun,
void *fabric_tmr_ptr, unsigned char tm_type, int flags)
{
@@ -1720,25 +1721,26 @@ void target_submit_tmr(struct se_cmd *se_cmd, struct se_session *se_sess,
transport_init_se_cmd(se_cmd, se_tpg->se_tpg_tfo, se_sess,
0, DMA_NONE, MSG_SIMPLE_TAG, sense);
+ /*
+ * FIXME: Currently expect caller to handle se_cmd->se_tmr_req
+ * allocation failure.
+ */
+ ret = core_tmr_alloc_req(se_cmd, fabric_tmr_ptr, tm_type, GFP_KERNEL);
+ if (ret < 0)
+ return -ENOMEM;
/* See target_submit_cmd for commentary */
target_get_sess_cmd(se_sess, se_cmd, (flags & TARGET_SCF_ACK_KREF));
- ret = core_tmr_alloc_req(se_cmd, fabric_tmr_ptr, tm_type, GFP_KERNEL);
- if (ret < 0) {
- dump_stack();
- /* FIXME XXX */
- return;
- }
-
ret = transport_lookup_tmr_lun(se_cmd, unpacked_lun);
if (ret) {
se_cmd->se_tmr_req->response = TMR_LUN_DOES_NOT_EXIST;
se_cmd->se_tfo->queue_tm_rsp(se_cmd);
transport_generic_free_cmd(se_cmd, 0);
- return;
+ return 0;
}
transport_generic_handle_tmr(se_cmd);
+ return 0;
}
EXPORT_SYMBOL(target_submit_tmr);
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