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lockref: Relax in cmpxchg loop
authorLuck, Tony <tony.luck@intel.com>
Tue, 3 Sep 2013 21:49:49 +0000 (14:49 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Tue, 3 Sep 2013 22:36:42 +0000 (15:36 -0700)
commitd472d9d98b463dd7a04f2bcdeafe4261686ce6ab
tree05972418a7e71d3e8d5a9c8c8d5e1dc22f013c5btree | snapshot
parent2f01ea908bcf838e815c0124b579513dbda3b8c8commit | diff
lockref: Relax in cmpxchg loop

While we are likley to succeed and break out of this loop, it isn't
guaranteed.  We should be power and thread friendly if we do have to
go around for a second (or third, or more) attempt.

Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
lib/lockref.c diff | blob | history
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