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authorChristoph Hellwig <hch@infradead.org>2011-12-21 14:13:47 -0500
committerNicholas Bellinger <nab@linux-iscsi.org>2012-02-25 14:37:45 -0800
commit7d680f3b74dd6f0f57569eeeee8c257790ceaa96 (patch)
treee0797ab722c222213b7cbe4fa9ba4a61db2d8b0c /drivers/infiniband
parentb01543dfe67bb1d191998e90d20534dc354de059 (diff)
target: replace various cmd flags with a transport state
Replace various atomic_ts used as flags in struct se_cmd with a single transport_state bitmap that requires t_state_lock to be held for modifications. In the target core that assumption generally is true, but some recently added code in the SRP target had to grow new lock calls. I can't say I like the way how it messes with the command state directly, but let's leave that for later. (Re-add missing ib_srpt.c changes that nab dropped..) Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/infiniband')
-rw-r--r--drivers/infiniband/ulp/srpt/ib_srpt.c13
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c
index 2b73d43cd691..e1e6b5b03c96 100644
--- a/drivers/infiniband/ulp/srpt/ib_srpt.c
+++ b/drivers/infiniband/ulp/srpt/ib_srpt.c
@@ -1378,7 +1378,9 @@ static int srpt_abort_cmd(struct srpt_send_ioctx *ioctx)
break;
case SRPT_STATE_NEED_DATA:
/* DMA_TO_DEVICE (write) - RDMA read error. */
- atomic_set(&ioctx->cmd.transport_lun_stop, 1);
+ spin_lock_irqsave(&ioctx->cmd.t_state_lock, flags);
+ ioctx->cmd.transport_state |= CMD_T_LUN_STOP;
+ spin_unlock_irqrestore(&ioctx->cmd.t_state_lock, flags);
transport_generic_handle_data(&ioctx->cmd);
break;
case SRPT_STATE_CMD_RSP_SENT:
@@ -1387,7 +1389,9 @@ static int srpt_abort_cmd(struct srpt_send_ioctx *ioctx)
* not been received in time.
*/
srpt_unmap_sg_to_ib_sge(ioctx->ch, ioctx);
- atomic_set(&ioctx->cmd.transport_lun_stop, 1);
+ spin_lock_irqsave(&ioctx->cmd.t_state_lock, flags);
+ ioctx->cmd.transport_state |= CMD_T_LUN_STOP;
+ spin_unlock_irqrestore(&ioctx->cmd.t_state_lock, flags);
kref_put(&ioctx->kref, srpt_put_send_ioctx_kref);
break;
case SRPT_STATE_MGMT_RSP_SENT:
@@ -1494,6 +1498,7 @@ static void srpt_handle_rdma_err_comp(struct srpt_rdma_ch *ch,
{
struct se_cmd *cmd;
enum srpt_command_state state;
+ unsigned long flags;
cmd = &ioctx->cmd;
state = srpt_get_cmd_state(ioctx);
@@ -1513,7 +1518,9 @@ static void srpt_handle_rdma_err_comp(struct srpt_rdma_ch *ch,
__func__, __LINE__, state);
break;
case SRPT_RDMA_WRITE_LAST:
- atomic_set(&ioctx->cmd.transport_lun_stop, 1);
+ spin_lock_irqsave(&ioctx->cmd.t_state_lock, flags);
+ ioctx->cmd.transport_state |= CMD_T_LUN_STOP;
+ spin_unlock_irqrestore(&ioctx->cmd.t_state_lock, flags);
break;
default:
printk(KERN_ERR "%s[%d]: opcode = %u\n", __func__,