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crimson/osd: document OperationThrottler's behavior towards op's blocker list.

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Signed-off-by: Radosław Zarzyński <rzarzyns@redhat.com>
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Radosław Zarzyński 2022-04-02 11:22:19 +02:00
parent 846ed08359
commit 2dc3770f7a
1 changed files with 4 additions and 0 deletions
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4
src/crimson/osd/osd_operation.h
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@ -183,6 +183,10 @@ class OperationThrottler : public BlockerT<OperationThrottler>,
F &&f) {
if (!max_in_progress) return f();
auto fut = acquire_throttle(params);
// At any given moment a particular op can be blocked by a given
// OperationThrottler instance no more than once. This means the
// same throtter won't be on the op's blockers list more than one
// time.
return op->with_blocking_future(std::move(fut))
.then(std::forward<F>(f))
.then([this](auto x) {