Commit b0e062ae authored Oct 11, 2011 by Nicholas Bellinger

target: Prevent TRANSPORT_FREE_CMD_INTR processing in core_tmr_drain_cmd_list

This patch contains a bugfix for TMR LUN_RESET related to TRANSPORT_FREE_CMD_INTR
operation, where core_tmr_drain_cmd_list() will now skip processing for this
case to prevent an ABORT_TASK status from being returned for descriptors that
are already queued up to be released by processing thread context.

Cc: Roland Dreier <roland@purestorage.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: stable@kernel.org
Signed-off-by: Nicholas Bellinger <nab@risingtidesystems.com>

parent d050ffb9

drivers/target/target_core_tmr.c

+10 −0

Original line number	Diff line number	Diff line
		@@ -339,6 +339,16 @@ static void core_tmr_drain_cmd_list(
		*/
		if (prout_cmd == cmd)
		continue;
		/*
		* Skip direct processing of TRANSPORT_FREE_CMD_INTR for
		* HW target mode fabrics.
		*/
		spin_lock(&cmd->t_state_lock);
		if (cmd->t_state == TRANSPORT_FREE_CMD_INTR) {
		spin_unlock(&cmd->t_state_lock);
		continue;
		}
		spin_unlock(&cmd->t_state_lock);

		atomic_set(&cmd->t_transport_queue_active, 0);
		atomic_dec(&qobj->queue_cnt);