| commit | 09dc3cf93f7d16fdd37a0ad8486faebb5e2769ec | [log] [tgz] |
|---|---|---|
| author | Peter Zijlstra <peterz@infradead.org> | Thu Dec 08 14:34:13 2011 -0800 |
| committer | Linus Torvalds <torvalds@linux-foundation.org> | Fri Dec 09 07:50:28 2011 -0800 |
| tree | 4db1b0103db218d0d0aa26a26232c3674dd18622 | |
| parent | c193c82f054195aa352ccbef91afc28446e5a30e [diff] |
printk: avoid double lock acquire
Commit 4f2a8d3cf5e ("printk: Fix console_sem vs logbuf_lock unlock race")
introduced another silly bug where we would want to acquire an already
held lock. Avoid this.
Reported-by: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>