btrfs: remove btrfs_bio::logical member

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The member btrfs_bio::logical is only initialized by two call sites:

- btrfs_repair_one_sector()
  No corresponding site to utilize it.

- btrfs_submit_direct()
  The corresponding site to utilize it is btrfs_check_read_dio_bio().

However for btrfs_check_read_dio_bio(), we can grab the file_offset from
btrfs_dio_private::file_offset directly.

Thus it turns out we don't really need that btrfs_bio::logical member at
all.

For btrfs_bio, the logical bytenr can be fetched from its
bio->bi_iter.bi_sector directly.

So let's just remove the member to save 8 bytes for structure btrfs_bio.

Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

...

This commit is contained in:

Qu Wenruo 2021-10-08 15:30:00 +08:00 • committed by David Sterba

parent 47926ab535

commit f4f39fc5dc

3 changed files with 8 additions and 11 deletions

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1

fs/btrfs/extent_io.c

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17

fs/btrfs/inode.c

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1

fs/btrfs/volumes.h

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