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Andrew Morton authored
From: Ian Kent <raven@themaw.net> The case where two process similtaneously trigger a mount in autofs4 can cause multiple requests to the daemon for the same mount. The daemon handles this OK but it's possible an incorrect error to be returned. For this reason I believe it is better to change the spin lock to a semaphore in waitq.c. This makes the second and subsequent request wait on the q as ther supposed to.
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