From: Hugh Dickins <hughd@google.com>
Date: Tue, 29 May 2012 22:06:38 +0000 (-0700)
Subject: tmpfs: enable NOSEC optimization
X-Git-Tag: v3.5-rc1~49^2~132
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2f6e38f3cd17a7858112f538c1700c747170db1f;p=pandora-kernel.git

tmpfs: enable NOSEC optimization

Let tmpfs into the NOSEC optimization (avoiding file_remove_suid()
overhead on most common writes): set MS_NOSEC on its superblocks.

Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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