Commit 48b79357 authored by Kent Overstreet's avatar Kent Overstreet
Browse files

closures: closure_nr_remaining() 



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

Signed-off-by: default avatarKent Overstreet <kent.overstreet@linux.dev>
parent ced58fc7

include/linux/closure.h

+6 −1
Original line number Diff line number Diff line
@@ -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);

}