diff options
| author | James Smart <jsmart2021@gmail.com> | 2017-05-22 15:28:42 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2017-06-28 08:14:13 -0600 |
| commit | 36715cf4b36688aa327d77ddb6bc5f740b01de94 (patch) | |
| tree | 435e23bc8f59ca560008de2588b684a3c5b75257 /drivers | |
| parent | b4dfd6ee997d6d5d30b8ace5593ad1a9134418d6 (diff) | |
| download | linux-36715cf4b36688aa327d77ddb6bc5f740b01de94.tar.gz | |
nvme_fc: replace ioabort msleep loop with completion
Per the recommendation by Sagi on: http://lists.infradead.org/pipermail/linux-nvme/2017-April/009261.html Wait for io aborts to complete wait converted from msleep look to using a struct completion. Signed-off-by: James Smart <james.smart@broadcom.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/nvme/host/fc.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c index fe6f5b71979c..cdd138c1f223 100644 --- a/drivers/nvme/host/fc.c +++ b/drivers/nvme/host/fc.c @@ -166,6 +166,7 @@ struct nvme_fc_ctrl { struct kref ref; u32 flags; u32 iocnt; + wait_queue_head_t ioabort_wait; struct nvme_fc_fcp_op aen_ops[NVME_FC_NR_AEN_COMMANDS]; @@ -1239,8 +1240,10 @@ __nvme_fc_fcpop_chk_teardowns(struct nvme_fc_ctrl *ctrl, spin_lock_irqsave(&ctrl->lock, flags); if (unlikely(op->flags & FCOP_FLAGS_TERMIO)) { - if (ctrl->flags & FCCTRL_TERMIO) - ctrl->iocnt--; + if (ctrl->flags & FCCTRL_TERMIO) { + if (!--ctrl->iocnt) + wake_up(&ctrl->ioabort_wait); + } } if (op->flags & FCOP_FLAGS_RELEASED) complete_rq = true; @@ -2476,11 +2479,7 @@ nvme_fc_delete_association(struct nvme_fc_ctrl *ctrl) /* wait for all io that had to be aborted */ spin_lock_irqsave(&ctrl->lock, flags); - while (ctrl->iocnt) { - spin_unlock_irqrestore(&ctrl->lock, flags); - msleep(1000); - spin_lock_irqsave(&ctrl->lock, flags); - } + wait_event_lock_irq(ctrl->ioabort_wait, ctrl->iocnt == 0, ctrl->lock); ctrl->flags &= ~FCCTRL_TERMIO; spin_unlock_irqrestore(&ctrl->lock, flags); |