btrfs: Remove special handling of EXTENT_BUFFER_UNMAPPED while freeing

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Now that the whole of btrfs code has been audited for eb reference count
management it's time to remove the hunk in free_extent_buffer that
essentially considered the condition

  "eb->ref == 2 && EXTENT_BUFFER_DUMMY"

to equal "eb->ref = 1". Also remove the last location
which takes an extra reference count in alloc_test_extent_buffer.

Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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Nikolay Borisov 2018-08-15 18:26:57 +03:00 • committed by David Sterba

parent df44971468

commit 9cfc8ba712

2 changed files with 5 additions and 12 deletions

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11

fs/btrfs/extent_io.c

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6

fs/btrfs/tests/btrfs-tests.c

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