target: Make TFO->check_stop_free return free status
This patch converts target_core_fabric_ops->check_stop_free() usage in
transport_cmd_check_stop() and associated fabric module usage to
return '1' when the passed se_cmd has been released directly within
->check_stop_free(), or return '0' when the passed se_cmd has not
been released.
This addresses an issue where transport_cmd_finish_abort() ->
transport_cmd_check_stop_to_fabric() was leaking descriptors during
LUN_RESET for modules using ->check_stop_free(), but not directly
releasing se_cmd in all cases.
Cc: stable@kernel.org
Signed-off-by: Nicholas Bellinger <nab@risingtidesystems.com>
diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c
index 3c9c318..3df1c9b 100644
--- a/drivers/target/loopback/tcm_loop.c
+++ b/drivers/target/loopback/tcm_loop.c
@@ -205,7 +205,7 @@
/*
* Called from struct target_core_fabric_ops->check_stop_free()
*/
-static void tcm_loop_check_stop_free(struct se_cmd *se_cmd)
+static int tcm_loop_check_stop_free(struct se_cmd *se_cmd)
{
/*
* Do not release struct se_cmd's containing a valid TMR
@@ -213,12 +213,13 @@
* with transport_generic_free_cmd().
*/
if (se_cmd->se_tmr_req)
- return;
+ return 0;
/*
* Release the struct se_cmd, which will make a callback to release
* struct tcm_loop_cmd * in tcm_loop_deallocate_core_cmd()
*/
transport_generic_free_cmd(se_cmd, 0);
+ return 1;
}
static void tcm_loop_release_cmd(struct se_cmd *se_cmd)