[PATCH 18/32] closures: closure_nr_remaining()

Kent Overstreet
2023-05-09T16:59:24Z

Factor out a new helper, which returns the number of events outstanding.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
---
include/linux/closure.h | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/include/linux/closure.h b/include/linux/closure.h
index 36b4a83f9b..722a586bb2 100644
--- a/include/linux/closure.h
+++ b/include/linux/closure.h
@@ -172,6 +172,11 @@ void __closure_wake_up(struct closure_waitlist *list);
bool closure_wait(struct closure_waitlist *list, struct closure *cl);
void __closure_sync(struct closure *cl);

+static inline unsigned closure_nr_remaining(struct closure *cl)
+{
+ return atomic_read(&cl->remaining) & CLOSURE_REMAINING_MASK;
+}
+
/**
* closure_sync - sleep until a closure a closure has nothing left to wait on
*
@@ -180,7 +185,7 @@ void __closure_sync(struct closure *cl);
*/
static inline void closure_sync(struct closure *cl)
{
- if ((atomic_read(&cl->remaining) & CLOSURE_REMAINING_MASK) != 1)
+ if (closure_nr_remaining(cl) != 1)
__closure_sync(cl);
}

--
2.40.1