blk-cgroup: remove the !bio->bi_blkg check in blkcg_bio_issue_check (81630e27) · Commits · 戴 / test

This is purely a sanity check for grave programming errors. Remove it to simplify further work in this area. Acked-by:

include/linux/blk-cgroup.h

+1 −14

Original line number	Diff line number	Diff line
		@@ -543,24 +543,11 @@ static inline void blkcg_bio_issue_init(struct bio *bio)
		static inline bool blkcg_bio_issue_check(struct request_queue *q,
		struct bio *bio)
		{
		struct blkcg_gq *blkg;
		struct blkcg_gq *blkg = bio->bi_blkg;
		bool throtl = false;

		rcu_read_lock();

		if (!bio->bi_blkg) {
		char b[BDEVNAME_SIZE];

		WARN_ONCE(1,
		"no blkg associated for bio on block-device: %s\n",
		bio_devname(bio, b));
		bio_associate_blkg(bio);
		}

		blkg = bio->bi_blkg;

		throtl = blk_throtl_bio(q, blkg, bio);

		if (!throtl) {
		struct blkg_iostat_set *bis;
		int rwd, cpu;