Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
block: skip unnecessary checks for split bio
Lots of checks are already done while submitting this bio the first
time, and there is no need to check them again when this bio is
resubmitted after split.
Hence open code should_fail_bio() and blk_throtl_bio() that are still
necessary from submit_bio_split_bioset().
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
authored by
Yu Kuai
and committed by
Jens Axboe
0b64682e
e3290419
+7
-2
+1
-1
block/blk-core.c
+1
-1
block/blk-core.c
+5
-1
block/blk-merge.c
+5
-1
block/blk-merge.c
···
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bio_chain(split, bio);
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trace_block_split(split, bio->bi_iter.bi_sector);
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WARN_ON_ONCE(bio_zone_write_plugging(bio));
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-
submit_bio_noacct(bio);
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+
134
+
if (should_fail_bio(bio))
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+
bio_io_error(bio);
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+
else if (!blk_throtl_bio(bio))
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+
submit_bio_noacct_nocheck(bio);
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return split;
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140
}
+1
block/blk.h
+1
block/blk.h
···
616
616
int disk_register_independent_access_ranges(struct gendisk *disk);
617
617
void disk_unregister_independent_access_ranges(struct gendisk *disk);
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618
619
+
int should_fail_bio(struct bio *bio);
619
620
#ifdef CONFIG_FAIL_MAKE_REQUEST
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621
bool should_fail_request(struct block_device *part, unsigned int bytes);
621
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#else /* CONFIG_FAIL_MAKE_REQUEST */