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| author | Christoph Hellwig <hch@infradead.org> | 2012-07-08 15:58:49 -0400 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2012-07-16 17:35:21 -0700 |
| commit | af8772926f019b7bddd7477b8de5f3b0f12bad21 (patch) | |
| tree | 99bdfc7335a3223985b033404fb06fc58cb754f0 /include/target | |
| parent | f314643751450a582c1ca40a54558240ef7cd4bf (diff) | |
| download | linux-3.10-af8772926f019b7bddd7477b8de5f3b0f12bad21.tar.gz linux-3.10-af8772926f019b7bddd7477b8de5f3b0f12bad21.tar.bz2 linux-3.10-af8772926f019b7bddd7477b8de5f3b0f12bad21.zip | |
target: replace the processing thread with a TMR work queue
The last functionality of the target processing thread is offloading possibly
long running task management requests from the submitter context. To keep
TMR semantics the same we need a single threaded ordered queue, which can
be provided by a per-device workqueue with the right flags.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'include/target')
| -rw-r--r-- | include/target/target_core_base.h | 13 |
1 files changed, 1 insertions, 12 deletions
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h index 11052b24ee4..4f4f04219b1 100644 --- a/include/target/target_core_base.h +++ b/include/target/target_core_base.h @@ -147,7 +147,6 @@ enum transport_state_table { TRANSPORT_WRITE_PENDING = 3, TRANSPORT_PROCESSING = 5, TRANSPORT_COMPLETE = 6, - TRANSPORT_PROCESS_TMR = 9, TRANSPORT_ISTATE_PROCESSING = 11, TRANSPORT_COMPLETE_QF_WP = 18, TRANSPORT_COMPLETE_QF_OK = 19, @@ -464,13 +463,6 @@ struct t10_reservation { struct t10_reservation_ops pr_ops; }; -struct se_queue_obj { - atomic_t queue_cnt; - spinlock_t cmd_queue_lock; - struct list_head qobj_list; - wait_queue_head_t thread_wq; -}; - struct se_tmr_req { /* Task Management function to be performed */ u8 function; @@ -527,7 +519,6 @@ struct se_cmd { /* Only used for internal passthrough and legacy TCM fabric modules */ struct se_session *se_sess; struct se_tmr_req *se_tmr_req; - struct list_head se_queue_node; struct list_head se_cmd_list; struct completion cmd_wait_comp; struct kref cmd_kref; @@ -774,7 +765,6 @@ struct se_device { struct se_obj dev_obj; struct se_obj dev_access_obj; struct se_obj dev_export_obj; - struct se_queue_obj dev_queue_obj; spinlock_t delayed_cmd_lock; spinlock_t execute_task_lock; spinlock_t dev_reservation_lock; @@ -790,8 +780,7 @@ struct se_device { struct t10_pr_registration *dev_pr_res_holder; struct list_head dev_sep_list; struct list_head dev_tmr_list; - /* Pointer to descriptor for processing thread */ - struct task_struct *process_thread; + struct workqueue_struct *tmr_wq; struct work_struct qf_work_queue; struct list_head delayed_cmd_list; struct list_head state_list; |