From: David Rientjes <rientjes@google.com>
Date: Tue, 28 Jul 2009 01:30:35 +0000 (-0700)
Subject: slub: use size and objsize orders to disable debug flags
X-Git-Tag: v2.6.32-rc1~695^2^3~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3de472138a138008b534d9587593ba83390e330a;p=pandora-kernel.git

slub: use size and objsize orders to disable debug flags

This patch moves the masking of debugging flags which increase a cache's
min order due to metadata when `slub_debug=O' is used from
kmem_cache_flags() to kmem_cache_open().

Instead of defining the maximum metadata size increase in a preprocessor
macro, this approach uses the cache's ->size and ->objsize members to
determine if the min order increased due to debugging options.  If so,
the flags specified in the more appropriately named DEBUG_METADATA_FLAGS
are masked off.

This approach was suggested by Christoph Lameter
<cl@linux-foundation.org>.

Cc: Christoph Lameter <cl@linux-foundation.org>
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
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