try_wait_for_completion(9) try to decrement a completion without blocking

SYNOPSIS

bool try_wait_for_completion(struct completion * x);

ARGUMENTS

x

completion structure

RETURNS

0 if a decrement cannot be done without blocking 1 if a decrement succeeded.

If a completion is being used as a counting completion, attempt to decrement the counter without blocking. This enables us to avoid waiting if the resource the completion is protecting is not available.

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