| commit | 9ab772cd535c4b256a577eae516f9c7462346b2d | |
| author | Eric Paris <eparis@redhat.com> | |
| Mon, 23 Mar 2009 17:22:09 +0000 (23 18:22 +0100) | ||
| committer | Ingo Molnar <mingo@elte.hu> | |
| Mon, 6 Apr 2009 07:30:26 +0000 (6 09:30 +0200) | ||
| tree | 55af69a2eaeaa952f447b74cce74eee9f82cfaf9 | treesnapshot (tar.gz zip) |
| parent | 37d81828385f8ff823caaaf1a83e72d065b6cfa1 | commitdiff |
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>
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>
| include/linux/mutex.h | diffblobblamehistory |