From: Nick Piggin <nickpiggin@yahoo.com.au>
Date: Mon, 14 Nov 2005 00:07:25 +0000 (-0800)
Subject: [PATCH] atomic: inc_not_zero
X-Git-Tag: v2.6.15-rc2~158
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8426e1f6af0fd7f44d040af7263750c5a52f3cc3;p=pandora-kernel.git

[PATCH] atomic: inc_not_zero

Introduce an atomic_inc_not_zero operation.  Make this a special case of
atomic_add_unless because lockless pagecache actually wants
atomic_inc_not_negativeone due to its offset refcount.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: "Paul E. McKenney" <paulmck@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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