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authorJoern Engel <joern@logfs.org>2014-09-16 16:23:11 -0400
committerNicholas Bellinger <nab@linux-iscsi.org>2014-10-01 14:38:57 -0700
commit74ed7e62289dc6d388996d7c8f89c2e7e95b9657 (patch)
tree50f7364b619c59b70868b3ebe5d538a5916afabc /drivers/target
parent8f83269048628d7b139dacbfc6cc97befcbdd2e9 (diff)
target: remove some smp_mb__after_atomic()s
atomic_inc_return() already does an implicit memory barrier and the second case was moved from an atomic to a plain flag operation. If a barrier were needed in the second case, it would have to be smp_mb(), not a variant optimized away for x86 and other architectures. Signed-off-by: Joern Engel <joern@logfs.org> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target')
-rw-r--r--drivers/target/target_core_transport.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 7fa62fc93e0b..0b43761ed85f 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -1166,7 +1166,6 @@ transport_check_alloc_task_attr(struct se_cmd *cmd)
* Dormant to Active status.
*/
cmd->se_ordered_id = atomic_inc_return(&dev->dev_ordered_id);
- smp_mb__after_atomic();
pr_debug("Allocated se_ordered_id: %u for Task Attr: 0x%02x on %s\n",
cmd->se_ordered_id, cmd->sam_task_attr,
dev->transport->name);
@@ -2896,7 +2895,6 @@ void transport_send_task_abort(struct se_cmd *cmd)
if (cmd->se_tfo->write_pending_status(cmd) != 0) {
cmd->transport_state |= CMD_T_ABORTED;
cmd->se_cmd_flags |= SCF_SEND_DELAYED_TAS;
- smp_mb__after_atomic();
return;
}
}