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btrfs: don't allocate a btrfs_bio for raid56 per-stripe bios

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Except for the spurious initialization of ->device just after allocation
nothing uses the btrfs_bio, so just allocate a normal bio without extra
data.

Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Christoph Hellwig 2022-04-04 06:45:26 +02:00 committed by David Sterba
parent e01bf588f8
commit e1b4b44e00
1 changed files with 2 additions and 5 deletions
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7
fs/btrfs/raid56.c
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@ -1082,11 +1082,8 @@ static int rbio_add_io_page(struct btrfs_raid_bio *rbio,
}
/* put a new bio on the list */
bio = btrfs_bio_alloc(bio_max_len >> PAGE_SHIFT ?: 1);
btrfs_bio(bio)->device = stripe->dev;
bio->bi_iter.bi_size = 0;
bio_set_dev(bio, stripe->dev->bdev);
bio->bi_opf = opf;
bio = bio_alloc(stripe->dev->bdev, max(bio_max_len >> PAGE_SHIFT, 1UL),
opf, GFP_NOFS);
bio->bi_iter.bi_sector = disk_start >> 9;
bio->bi_private = rbio;