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authorNicholas Bellinger <nab@linux-iscsi.org>2016-02-05 14:51:36 -0800
committerNicholas Bellinger <nab@linux-iscsi.org>2016-02-06 15:59:38 -0800
commit310d3d314be7f0a84011ebdc4bdccbcae9755a87 (patch)
treea16767f7254b15213a1f4950765c88a60a347a1c /include/target
parent0f4a943168f31d29a1701908931acaba518b131a (diff)
downloadlinux-stericsson-310d3d314be7f0a84011ebdc4bdccbcae9755a87.tar.gz
target: Fix race with SCF_SEND_DELAYED_TAS handling
This patch fixes a race between setting of SCF_SEND_DELAYED_TAS in transport_send_task_abort(), and check of the same bit in transport_check_aborted_status(). It adds a __transport_check_aborted_status() version that is used by target_execute_cmd() when se_cmd->t_state_lock is held, and a transport_check_aborted_status() wrapper for all other existing callers. Also, it handles the case where the check happens before transport_send_task_abort() gets called. For this, go ahead and set SCF_SEND_DELAYED_TAS early when necessary, and have transport_send_task_abort() send the abort. Cc: Quinn Tran <quinn.tran@qlogic.com> Cc: Himanshu Madhani <himanshu.madhani@qlogic.com> Cc: Sagi Grimberg <sagig@mellanox.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.de> Cc: Andy Grover <agrover@redhat.com> Cc: Mike Christie <mchristi@redhat.com> Cc: stable@vger.kernel.org # 3.10+ Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'include/target')
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