ck_swlock: Decrement n_readers in TATAS style loop.

11 years ago · bf8779ab13
parent 3412f135df
commit bf8779ab13
1 changed files with 1 additions and 0 deletions
--- a/include/ck_swlock.h
+++ b/include/ck_swlock.h
@ -220,6 +220,7 @@ ck_swlock_read_latchlock(ck_swlock_t *rw)

 		/* Writer has latched, stall the reader */
 		if (ck_pr_faa_32(&rw->n_readers, 1) & CK_SWLOCK_LATCH_BIT) {
+			ck_pr_dec_32(&rw->n_readers);			
 			do {
 				ck_pr_stall();
 			} while (ck_pr_load_32(&rw->n_readers) & CK_SWLOCK_LATCH_BIT);