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| author | Eric Paris <eparis@redhat.com> | 2009-03-23 18:22:09 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-04-06 09:30:26 +0200 |
| commit | 9ab772cd535c4b256a577eae516f9c7462346b2d (patch) | |
| tree | 55af69a2eaeaa952f447b74cce74eee9f82cfaf9 /kernel/mutex.c | |
| parent | 37d81828385f8ff823caaaf1a83e72d065b6cfa1 (diff) | |
| download | linux-9ab772cd535c4b256a577eae516f9c7462346b2d.tar.gz linux-9ab772cd535c4b256a577eae516f9c7462346b2d.tar.bz2 linux-9ab772cd535c4b256a577eae516f9c7462346b2d.zip | |
mutex: add atomic_dec_and_mutex_lock()
Much like the atomic_dec_and_lock() function in which we take an hold a
spin_lock if we drop the atomic to 0 this function takes and holds the
mutex if we dec the atomic to 0.
Signed-off-by: Eric Paris <eparis@redhat.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Orig-LKML-Reference: <20090323172417.410913479@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/mutex.c')
0 files changed, 0 insertions, 0 deletions