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Commit 08da757d authored by Zhao Lei's avatar Zhao Lei Committed by David Sterba
Browse files

btrfs: cleanup: use for() loop in btrfs_map_bio() 



for() is obviously better in these code block, and remove noused
init-value to reduce about 6 bytes binary size.

Signed-off-by: default avatarZhao Lei <zhaolei@cn.fujitsu.com>
Reviewed-by: default avatarDavid Sterba <dsterba@suse.cz>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.cz>
parent a688a04a

fs/btrfs/volumes.c

+3 −6
Original line number Diff line number Diff line
@@ -5820,8 +5820,8 @@ int btrfs_map_bio(struct btrfs_root *root, int rw, struct bio *bio, 
	u64 length = 0;

	u64 map_length;

	int ret;

	int dev_nr = 0;

	int total_devs = 1;

	int dev_nr;

	int total_devs;

	struct btrfs_bio *bbio = NULL;



	length = bio->bi_iter.bi_size;
@@ -5862,11 +5862,10 @@ int btrfs_map_bio(struct btrfs_root *root, int rw, struct bio *bio, 
		BUG();

	}



	while (dev_nr < total_devs) {

	for (dev_nr = 0; dev_nr < total_devs; dev_nr++) {

		dev = bbio->stripes[dev_nr].dev;

		if (!dev || !dev->bdev || (rw & WRITE && !dev->writeable)) {

			bbio_error(bbio, first_bio, logical);

			dev_nr++;

			continue;

		}
@@ -5879,7 +5878,6 @@ int btrfs_map_bio(struct btrfs_root *root, int rw, struct bio *bio, 
			ret = breakup_stripe_bio(root, bbio, first_bio, dev,

						 dev_nr, rw, async_submit);

			BUG_ON(ret);

			dev_nr++;

			continue;

		}
@@ -5894,7 +5892,6 @@ int btrfs_map_bio(struct btrfs_root *root, int rw, struct bio *bio, 
		submit_stripe_bio(root, bbio, bio,

				  bbio->stripes[dev_nr].physical, dev_nr, rw,

				  async_submit);

		dev_nr++;

	}

	btrfs_bio_counter_dec(root->fs_info);

	return 0;