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[PATCH] kref: avoid an atomic operation in kref_put()
authorEric Dumazet <dada1@cosmosbay.com>
Mon, 30 Jan 2006 05:19:35 +0000 (06:19 +0100)
committerGreg Kroah-Hartman <gregkh@suse.de>
Mon, 20 Mar 2006 21:42:57 +0000 (13:42 -0800)
commit8b5536bbee53620f8d5f367987e5727ba36d886d
treec4733f4ce2a6d1aab32eda3c096c97f0365a43f8tree | snapshot (tar.gz zip)
parent489447380a2921ec0e9154f773c44ab3167ede4bcommit | diff
[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>
lib/kref.c diff | blob | blame | history