* [PATCH] ib_srpt: Make srpt_map_sg_to_ib_sge() failure case return -EAGAIN
@ 2011-10-26 7:13 Nicholas A. Bellinger
0 siblings, 0 replies; only message in thread
From: Nicholas A. Bellinger @ 2011-10-26 7:13 UTC (permalink / raw)
Cc: target-devel, linux-scsi, linux-rdma, Nicholas Bellinger,
Bart Van Assche, Christoph Hellwig, Roland Dreier
From: Nicholas Bellinger <nab@linux-iscsi.org>
This patch makes the failure case in srpt_map_sg_to_ib_sge() for ib_dma_map_sg()
return -EAGAIN so that this failure will trigger target-core QUEUE_FULL logic
from srpt_xfer_data() for srpt_write_pending() WRITEs and srpt_queue_response()
for READs.
Reported-by: Bart Van Assche <bvanassche@acm.org>
Cc: Bart Van Assche <bvanassche@acm.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Roland Dreier <roland@purestorage.com>
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
---
drivers/infiniband/ulp/srpt/ib_srpt.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c
index f7174b3..7892efc 100644
--- a/drivers/infiniband/ulp/srpt/ib_srpt.c
+++ b/drivers/infiniband/ulp/srpt/ib_srpt.c
@@ -1112,7 +1112,7 @@ static int srpt_map_sg_to_ib_sge(struct srpt_rdma_ch *ch,
count = ib_dma_map_sg(ch->sport->sdev->device, sg, sg_cnt,
opposite_dma_dir(dir));
if (unlikely(!count))
- return -EBUSY;
+ return -EAGAIN;
ioctx->mapped_sg_count = count;
--
1.7.2.5
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2011-10-26 7:13 [PATCH] ib_srpt: Make srpt_map_sg_to_ib_sge() failure case return -EAGAIN Nicholas A. Bellinger
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