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| author |   Eric Dumazet <dada1@cosmosbay.com> | 2006-01-30 06:19:35 +0100 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@suse.de> | 2006-03-20 13:42:57 -0800 |
| commit | 8b5536bbee53620f8d5f367987e5727ba36d886d (patch) | |
| tree | c4733f4ce2a6d1aab32eda3c096c97f0365a43f8 /block/genhd.c | |
| parent | [PATCH] handle errors returned by platform_get_irq*() (diff) | |
| download | linux-dev-8b5536bbee53620f8d5f367987e5727ba36d886d.tar.xz linux-dev-8b5536bbee53620f8d5f367987e5727ba36d886d.zip | |
[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>
Diffstat (limited to 'block/genhd.c')
0 files changed, 0 insertions, 0 deletions