From: Sam Bradshaw <sbradshaw@micron.com>
Date: Tue, 29 Jul 2014 20:31:36 +0000 (-0700)
Subject: NVMe: Correctly handle IOCTL_SUBMIT_IO when cpus > online queues
X-Git-Tag: omap-for-v3.19/fixes-rc1~94^2~45
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5905535610fc6b11379a999ff45bfa39f0d605b6;p=pandora-kernel.git

NVMe: Correctly handle IOCTL_SUBMIT_IO when cpus > online queues

nvme_submit_io_cmd() uses smp_processor_id() to pick an IO queue index.
This patch fixes the case where there are more cpus from which the ioctl
call can originate than online queues, which can happen when a device
supports or was allocated fewer interrupt vectors than exist cpu cores.

Thanks to Keith Busch for the implementation suggestion.

Signed-off-by: Sam Bradshaw <sbradshaw@micron.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
---

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