diff options
| author | Bart Van Assche | 2017-05-23 16:48:40 -0700 |
|---|---|---|
| committer | Nicholas Bellinger | 2017-07-06 23:11:24 -0700 |
| commit | d17203c41185a05ecd4d1fc647f16b17ab1b27ae (patch) | |
| tree | 48d019bc17625eed108fa3417a52037f00a643b5 | |
| parent | 4d3895d5ea43cf40fd707692263c6f0988fe8d70 (diff) | |
target/tcm_loop: Replace a waitqueue and a counter by a completion
This patch simplifies the implementation of the tcm_loop driver
but does not change its behavior.
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.com>
Cc: David Disseldorp <ddiss@suse.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
| -rw-r--r-- | drivers/target/loopback/tcm_loop.c | 12 | ||||
| -rw-r--r-- | drivers/target/loopback/tcm_loop.h | 3 |
2 files changed, 5 insertions, 10 deletions
diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c index 79776b447b15..27f912747113 100644 --- a/drivers/target/loopback/tcm_loop.c +++ b/drivers/target/loopback/tcm_loop.c @@ -239,7 +239,7 @@ static int tcm_loop_issue_tmr(struct tcm_loop_tpg *tl_tpg, return ret; } - init_waitqueue_head(&tl_cmd->tl_tmr_wait); + init_completion(&tl_cmd->tmr_done); se_cmd = &tl_cmd->tl_se_cmd; se_tpg = &tl_tpg->tl_se_tpg; @@ -270,7 +270,7 @@ static int tcm_loop_issue_tmr(struct tcm_loop_tpg *tl_tpg, * tcm_loop_queue_tm_rsp() to wake us up. */ transport_generic_handle_tmr(se_cmd); - wait_event(tl_cmd->tl_tmr_wait, atomic_read(&tl_cmd->tmr_complete)); + wait_for_completion(&tl_cmd->tmr_done); /* * The TMR LUN_RESET has completed, check the response status and * then release allocations. @@ -665,12 +665,8 @@ static void tcm_loop_queue_tm_rsp(struct se_cmd *se_cmd) struct tcm_loop_cmd *tl_cmd = container_of(se_cmd, struct tcm_loop_cmd, tl_se_cmd); - /* - * The SCSI EH thread will be sleeping on se_tmr->tl_tmr_wait, go ahead - * and wake up the wait_queue_head_t in tcm_loop_device_reset() - */ - atomic_set(&tl_cmd->tmr_complete, 1); - wake_up(&tl_cmd->tl_tmr_wait); + /* Wake up tcm_loop_issue_tmr(). */ + complete(&tl_cmd->tmr_done); } static void tcm_loop_aborted_task(struct se_cmd *se_cmd) diff --git a/drivers/target/loopback/tcm_loop.h b/drivers/target/loopback/tcm_loop.h index 21340781568b..3acc43c05117 100644 --- a/drivers/target/loopback/tcm_loop.h +++ b/drivers/target/loopback/tcm_loop.h @@ -16,8 +16,7 @@ struct tcm_loop_cmd { /* The TCM I/O descriptor that is accessed via container_of() */ struct se_cmd tl_se_cmd; struct work_struct work; - atomic_t tmr_complete; - wait_queue_head_t tl_tmr_wait; + struct completion tmr_done; /* Sense buffer that will be mapped into outgoing status */ unsigned char tl_sense_buf[TRANSPORT_SENSE_BUFFER]; }; |