ck_bytelock: Migrate to ck_pr_fence_X_Y.

include/ck_bytelock.h

@@ -93,7 +93,7 @@ ck_bytelock_write_lock(struct ck_bytelock *bytelock, unsigned int slot)
 		ck_pr_store_8(&bytelock->readers[slot - 1], false);
 
 	/* Wait for slotted readers to drain out. */
-	ck_pr_fence_strict_memory();
+	ck_pr_fence_store_load();
 	for (i = 0; i < sizeof(bytelock->readers) / CK_BYTELOCK_LENGTH; i++) {
 		while (CK_BYTELOCK_LOAD((CK_BYTELOCK_TYPE *)&readers[i]) != false)
 			ck_pr_stall();
@@ -150,7 +150,7 @@ ck_bytelock_read_lock(struct ck_bytelock *bytelock, unsigned int slot)
 	slot -= 1;
 	for (;;) {
 		ck_pr_store_8(&bytelock->readers[slot], true);
-		ck_pr_fence_strict_memory();
+		ck_pr_fence_store_load();
 
 		/*
 		 * If there is no owner at this point, our slot has