block: change return type to bool

Chengguang Xu · axboe · commit 599d067dd3c1 · 2018-08-16T13:44:17.000-06:00
Because blk_do_io_stat() only does a judgement about the request
contributes to IO statistics, it better changes return type to bool.

Signed-off-by: Chengguang Xu &lt;cgxu519@gmx.com&gt;
Signed-off-by: Jens Axboe &lt;axboe@kernel.dk&gt;
diff --git a/block/blk.h b/block/blk.h
@@ -297,7 +297,7 @@ extern int blk_update_nr_requests(struct request_queue *, unsigned int);
  *	b) the queue had IO stats enabled when this request was started, and
  *	c) it's a file system request
  */
-static inline int blk_do_io_stat(struct request *rq)
+static inline bool blk_do_io_stat(struct request *rq)
 {
 	return rq->rq_disk &&
 	       (rq->rq_flags & RQF_IO_STAT) &&

Original file line number	Diff line number	Diff line change
`@@ -297,7 +297,7 @@ extern int blk_update_nr_requests(struct request_queue *, unsigned int);`
`297`	`297`	`* b) the queue had IO stats enabled when this request was started, and`
`298`	`298`	`* c) it's a file system request`
`299`	`299`	`*/`
`300`		`-static inline int blk_do_io_stat(struct request *rq)`
	`300`	`+static inline bool blk_do_io_stat(struct request *rq)`
`301`	`301`	`{`
`302`	`302`	`return rq->rq_disk &&`
`303`	`303`	`(rq->rq_flags & RQF_IO_STAT) &&`