From: Ganesh Mahendran <opensource.ganesh@gmail.com>
Date: Sat, 13 Dec 2014 00:57:07 +0000 (-0800)
Subject: mm/zsmalloc: avoid duplicate assignment of prev_class
X-Git-Tag: omap-for-v3.20/drop-legacy-3517~97^2~37
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=df8b5bb998f10cfc040ad30300f9a9ea4592ff82;p=pandora-kernel.git

mm/zsmalloc: avoid duplicate assignment of prev_class

In zs_create_pool(), prev_class is assigned (ZS_SIZE_CLASSES - 1) times.
And the prev_class only references to the previous size_class.  So we do
not need unnecessary assignement.

This patch assigns *prev_class* when a new size_class structure is
allocated and uses prev_class to check whether the first class has been
allocated.

[akpm@linux-foundation.org: remove now-unused ZS_SIZE_CLASSES]
Signed-off-by: Ganesh Mahendran <opensource.ganesh@gmail.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Reviewed-by: Dan Streetman <ddstreet@ieee.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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