From: Eric Dumazet <dada1@cosmosbay.com>
Date: Mon, 30 Jan 2006 05:19:35 +0000 (+0100)
Subject: [PATCH] kref: avoid an atomic operation in kref_put()
X-Git-Tag: v2.6.17-rc1~1177^2~17
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8b5536bbee53620f8d5f367987e5727ba36d886d;p=pandora-kernel.git

[PATCH] kref: avoid an atomic operation in kref_put()

Avoid an atomic operation in kref_put() when the last reference is
dropped. On most platforms, atomic_read() is a plan read of the counter
and involves no atomic at all.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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