NVMe: Avoid shift operation when writing cq head doorbell

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Changes the type of dev->db_stride to unsigned and changes the value
stored there to be 1 << the current value. Then there is less
calculation to be done at completion time.

Signed-off-by: Haiyan Hu <huhaiyan@huawei.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>

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Haiyan Hu 2013-09-10 11:25:37 +08:00 • committed by Matthew Wilcox

parent 2d3c627502

commit b80d5ccca3

2 changed files with 6 additions and 6 deletions

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10

drivers/block/nvme-core.c

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2

include/linux/nvme.h

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