From: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Date: Wed, 15 Apr 2015 23:14:35 +0000 (-0700)
Subject: mm: don't call __page_cache_release for hugetlb
X-Git-Tag: omap-for-v4.1/fixes-rc1~128^2~79
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=822fc61367f062d36c5b5a4d517e9bd2b65a741f;p=pandora-kernel.git

mm: don't call __page_cache_release for hugetlb

__put_compound_page() calls __page_cache_release() to do some freeing
work, but it's obviously for thps, not for hugetlb.  We don't care because
PageLRU is always cleared and page->mem_cgroup is always NULL for hugetlb.
But it's not correct and has potential risks, so let's make it
conditional.

Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Hugh Dickins <hughd@google.com>
Reviewed-by: Michal Hocko <mhocko@suse.cz>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

Reading git-diff-tree failed