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trace: introduce missing mutex_unlock()

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Impact: fix tracing buffer mutex leak in case of allocation failure

This error was spotted by this semantic patch:

  http://www.emn.fr/x-info/coccinelle/mut.html

It looks correct as far as I can tell. Please review.

Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com>
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Vegard Nossum 2008-11-18 19:22:13 +01:00 committed by Ingo Molnar
parent 5177dc3f2b
commit 641d2f63cf
1 changed files with 1 additions and 0 deletions
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kernel/trace/ring_buffer.c
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@ -617,6 +617,7 @@ int ring_buffer_resize(struct ring_buffer *buffer, unsigned long size)
list_del_init(&page->list);
free_buffer_page(page);
}
mutex_unlock(&buffer->mutex);
return -ENOMEM;
}