NVMe: Use a symbolic name to represent cancelled commands instead of 0
authorMatthew Wilcox <matthew.r.wilcox@intel.com>
Sun, 6 Feb 2011 12:53:23 +0000 (07:53 -0500)
committerMatthew Wilcox <matthew.r.wilcox@intel.com>
Fri, 4 Nov 2011 19:52:55 +0000 (15:52 -0400)
I have plans for other special values in sync_completion.  Plus, this
is more self-documenting, and lets us detect bogus usages.

Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
drivers/block/nvme.c

Simple merge