Simplify semaphore implementation

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By removing the negative values of 'count' and relying on the wait_list to
indicate whether we have any waiters, we can simplify the implementation
by removing the protection against an unlikely race condition.  Thanks to
David Howells for his suggestions.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>

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Matthew Wilcox 2008-03-14 14:35:22 -04:00 • committed by Matthew Wilcox

parent f1241c87a1

commit b17170b2fa

2 changed files with 27 additions and 60 deletions

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kernel/semaphore.c

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