block: Delete blk_queue_flag_test_and_set()

Since commit 70200574 ("block: remove QUEUE_FLAG_DISCARD"),
blk_queue_flag_test_and_set() has not been used, so delete it.
Signed-off-by: John Garry <john.g.garry@oracle.com>
Link: https://lore.kernel.org/r/20240627160735.842189-1-john.g.garry@oracle.comSigned-off-by: Jens Axboe <axboe@kernel.dk>

block/blk-core.c

@@ -94,20 +94,6 @@ void blk_queue_flag_clear(unsigned int flag, struct request_queue *q)
 }
 EXPORT_SYMBOL(blk_queue_flag_clear);
 
-/**
- * blk_queue_flag_test_and_set - atomically test and set a queue flag
- * @flag: flag to be set
- * @q: request queue
- *
- * Returns the previous value of @flag - 0 if the flag was not set and 1 if
- * the flag was already set.
- */
-bool blk_queue_flag_test_and_set(unsigned int flag, struct request_queue *q)
-{
-	return test_and_set_bit(flag, &q->queue_flags);
-}
-EXPORT_SYMBOL_GPL(blk_queue_flag_test_and_set);
-
 #define REQ_OP_NAME(name) [REQ_OP_##name] = #name
 static const char *const blk_op_name[] = {
 	REQ_OP_NAME(READ),

include/linux/blkdev.h

@@ -609,7 +609,6 @@ struct request_queue {
 
 void blk_queue_flag_set(unsigned int flag, struct request_queue *q);
 void blk_queue_flag_clear(unsigned int flag, struct request_queue *q);
-bool blk_queue_flag_test_and_set(unsigned int flag, struct request_queue *q);
 
 #define blk_queue_stopped(q)	test_bit(QUEUE_FLAG_STOPPED, &(q)->queue_flags)
 #define blk_queue_dying(q)	test_bit(QUEUE_FLAG_DYING, &(q)->queue_flags)