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btrfs: stop using the btrfs_bio saved iter in index_rbio_pages

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The bios added to ->bio_list are the original bios fed into
btrfs_map_bio, which are never advanced.  Just use the iter in the
bio itself.

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 06:45:28 +02:00 committed by David Sterba
parent 75c17e6666
commit b027669449
1 changed files with 0 additions and 3 deletions
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3
fs/btrfs/raid56.c
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@ -1134,9 +1134,6 @@ static void index_rbio_pages(struct btrfs_raid_bio *rbio)
stripe_offset = start - rbio->bioc->raid_map[0];
page_index = stripe_offset >> PAGE_SHIFT;
if (bio_flagged(bio, BIO_CLONED))
bio->bi_iter = btrfs_bio(bio)->iter;
bio_for_each_segment(bvec, bio, iter) {
rbio->bio_pages[page_index + i] = bvec.bv_page;
i++;