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btrfs: remove unused btrfs_io_stripe::length

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First added (but not effectively used) in 02c372e1f0 ("btrfs: add
support for inserting raid stripe extents"). The structure is
initialized to zeros so the only use in btrfs_insert_one_raid_extent()

    u64 length = bioc->stripes[i].length;
    struct btrfs_raid_stride *raid_stride = &stripe_extent->strides[i];

    if (length == 0)
            length = bioc->size;

the 'if' always happens.

Last use in 4016358e85 ("btrfs: remove unused variable length in
btrfs_insert_one_raid_extent()") was an obvious cleanup. It seems to be
safe to remove, raid-stripe-tree works without using it since 6.6.

This was found by tool https://github.com/jirislaby/clang-struct .

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2025-04-22 17:32:17 +02:00
parent 2d44a15afd
commit d4d788a776
1 changed files with 0 additions and 1 deletions
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1
fs/btrfs/volumes.h
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@ -473,7 +473,6 @@ struct btrfs_io_stripe {
struct btrfs_device *dev;
/* Block mapping. */
u64 physical;
u64 length;
bool rst_search_commit_root;
/* For the endio handler. */
struct btrfs_io_context *bioc;