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05 April 2024, 19:05:47 UTC
Revision b0f2853b56a2acaff19cca2c6a608f8ec268d21a authored by Christoph Hellwig on 17 January 2018, 21:04:38 UTC, committed by Jens Axboe on 17 January 2018, 21:05:35 UTC 
nvme-pci: take sglist coalescing in dma_map_sg into account
 
Some iommu implementations can merge physically and/or virtually
contiguous segments inside sg_map_dma.  The NVMe SGL support does not take
this into account and will warn because of falling off a loop.  Pass the
number of mapped segments to nvme_pci_setup_sgls so that the SGL setup
can take the number of mapped segments into account.

Reported-by: Fangjian (Turing) <f.fangjian@huawei.com>
Fixes: a7a7cbe3 ("nvme-pci: add SGL support")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Sagi Grimberg <sagi@rimberg.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
1 parent 20469a3
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Tip revision: b0f2853b56a2acaff19cca2c6a608f8ec268d21a authored by Christoph Hellwig on 17 January 2018, 21:04:38 UTC
nvme-pci: take sglist coalescing in dma_map_sg into account
Tip revision: b0f2853
.cocciconfig 
[spatch]
	options = --timeout 200
	options = --use-gitgrep
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