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Commit 64ac24e7 authored by Matthew Wilcox's avatar Matthew Wilcox Committed by Matthew Wilcox
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Generic semaphore implementation



Semaphores are no longer performance-critical, so a generic C
implementation is better for maintainability, debuggability and
extensibility.  Thanks to Peter Zijlstra for fixing the lockdep
warning.  Thanks to Harvey Harrison for pointing out that the
unlikely() was unnecessary.

Signed-off-by: default avatarMatthew Wilcox <willy@linux.intel.com>
Acked-by: default avatarIngo Molnar <mingo@elte.hu>
parent e48b3dee
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