From: Matthew Wilcox <matthew.r.wilcox@intel.com>
Date: Mon, 14 Feb 2011 20:55:33 +0000 (-0500)
Subject: NVMe: Handle failures differently in nvme_submit_bio_queue()
X-Git-Tag: v3.3-rc1~16^2~59
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=eeee322647a67c20d9277c5e02c42b2126ea74bc;p=pandora-kernel.git

NVMe: Handle failures differently in nvme_submit_bio_queue()

Return -EBUSY if the queue is full or -ENOMEM if we failed to allocate
memory (or map a scatterlist).  Also use GFP_ATOMIC to allocate the
nvme_bio and move the locking to the callers of nvme_submit_bio_queue().

In nvme_make_request(), don't permit an I/O to jump the queue -- if the
congestion list already has an entry, just add to the tail, rather than
trying to submit.

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

Reading git-diff-tree failed