From: Colin Cross <ccross@android.com>
Date: Thu, 8 Mar 2012 01:34:35 +0000 (-0800)
Subject: staging: android: persistent_ram: make persistent_ram_write atomic
X-Git-Tag: v3.4-rc1~186^2~47
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=808d0387eb7df3f83352ca41f8c943cb3ed61246;p=pandora-kernel.git

staging: android: persistent_ram: make persistent_ram_write atomic

Allow persistent_ram_write to be called on multiple cpus at
the same time, as long as ecc is not in use.  Uses atomics
for the buffer->start and buffer->size counters.

[jstultz: Fix up some pr_info casting issues on 64bit]
CC: Greg KH <gregkh@linuxfoundation.org>
CC: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

Reading git-diff-tree failed