diff options
| author | Nicholas Bellinger <nab@linux-iscsi.org> | 2011-12-01 03:18:33 +0100 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2011-12-14 12:48:46 +0100 |
| commit | 4d2300ccffd22d1d0213b6a8e4d685eb6ca069c0 (patch) | |
| tree | a76817aa4aaba5a6ffb05b3e6a0ea9ca654a0519 /include/target | |
| parent | target: Drop se_device TCQ queue_depth usage from I/O path (diff) | |
| download | linux-4d2300ccffd22d1d0213b6a8e4d685eb6ca069c0.tar.xz linux-4d2300ccffd22d1d0213b6a8e4d685eb6ca069c0.zip | |
target: Remove extra se_device->execute_task_lock access in fast path
This patch makes __transport_execute_tasks() perform the addition of
tasks to dev->execute_task_list via __transport_add_tasks_from_cmd()
while holding dev->execute_task_lock during normal I/O fast path
submission.
It effectively removes the unnecessary re-acquire of dev->execute_task_lock
during transport_execute_tasks() -> transport_add_tasks_from_cmd() ahead
of calling __transport_execute_tasks() to queue tasks for the passed
*se_cmd descriptor.
(v2: Re-add goto check_depth usage for multi-task submission for now..)
Cc: Christoph Hellwig <hch@lst.de>
Cc: Roland Dreier <roland@purestorage.com>
Cc: Joern Engel <joern@logfs.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'include/target')
| -rw-r--r-- | include/target/target_core_base.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h index cd4caf3a598f..a74cb2be74de 100644 --- a/include/target/target_core_base.h +++ b/include/target/target_core_base.h @@ -781,7 +781,6 @@ struct se_device { u32 dev_port_count; /* See transport_device_status_table */ u32 dev_status; - u32 dev_tcq_window_closed; /* Physical device queue depth */ u32 queue_depth; /* Used for SPC-2 reservations enforce of ISIDs */ |