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Commit c2553b58 authored by Jens Axboe's avatar Jens Axboe
Browse files

block: make blk_do_io_stat() do the full "is this rq accountable" checks 



We currently check for file system requests outside of blk_do_io_stat(rq),
but we may as well just include it.

Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
parent 731ec497

block/blk-core.c

+3 −9
Original line number Diff line number Diff line
@@ -68,7 +68,7 @@ static void drive_stat_acct(struct request *rq, int new_io) 
	int rw = rq_data_dir(rq);

	int cpu;



	if (!blk_fs_request(rq) || !blk_do_io_stat(rq))

	if (!blk_do_io_stat(rq))

		return;



	cpu = part_stat_lock();
@@ -1639,10 +1639,7 @@ EXPORT_SYMBOL(blkdev_dequeue_request); 


static void blk_account_io_completion(struct request *req, unsigned int bytes)

{

	if (!blk_do_io_stat(req))

		return;



	if (blk_fs_request(req)) {

	if (blk_do_io_stat(req)) {

		const int rw = rq_data_dir(req);

		struct hd_struct *part;

		int cpu;
@@ -1656,15 +1653,12 @@ static void blk_account_io_completion(struct request *req, unsigned int bytes) 


static void blk_account_io_done(struct request *req)

{

	if (!blk_do_io_stat(req))

		return;



	/*

	 * Account IO completion.  bar_rq isn't accounted as a normal

	 * IO on queueing nor completion.  Accounting the containing

	 * request is enough.

	 */

	if (blk_fs_request(req) && req != &req->q->bar_rq) {

	if (blk_do_io_stat(req) && req != &req->q->bar_rq) {

		unsigned long duration = jiffies - req->start_time;

		const int rw = rq_data_dir(req);

		struct hd_struct *part;

block/blk.h

+8 −1
Original line number Diff line number Diff line
@@ -149,9 +149,16 @@ static inline int blk_cpu_to_group(int cpu) 
#endif

}



/*

 * Contribute to IO statistics IFF:

 *

 *	a) it's attached to a gendisk, and

 *	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)

{

	return rq->rq_disk && blk_rq_io_stat(rq);

	return rq->rq_disk && blk_rq_io_stat(rq) && blk_fs_request(rq);

}



#endif