| commit | b1fca26631f76a5e8b18435a43f5d82b8734da4b | |
| author | Eric Paris <eparis@redhat.com> | |
| Mon, 23 Mar 2009 17:22:09 +0000 (23 18:22 +0100) | ||
| committer | Ingo Molnar <mingo@elte.hu> | |
| Wed, 29 Apr 2009 14:45:54 +0000 (29 16:45 +0200) | ||
| tree | 6b8e651239219e85a6b3b9238878c4a6eb4f2d9c | treesnapshot (tar.gz zip) |
| parent | 56a50adda49b2020156616c4eb15353e0f9ad7de | 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 |