From: Arjan van de Ven <arjan@linux.intel.com>
Date: Wed, 1 May 2013 20:38:23 +0000 (-0400)
Subject: NVMe: Set TASK_INTERRUPTIBLE before processing queues
X-Git-Tag: v3.10-rc1~21^2~14
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=564a232c059913d91b491e04c2b2d670b8f94615;p=pandora-kernel.git

NVMe: Set TASK_INTERRUPTIBLE before processing queues

The kthread has two tasks; handling timeouts (for which it runs once per
second), and submitting queued BIOs.  If a BIO happens to be queued after
the thread has processed the queue but before it calls schedule_timeout(),
the thread will sleep for a second before submitting it, which can cause
performance problems in some rare cases (that will become more common in
a subsequent patch).

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Tested-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
---

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