btrfs: remove checks for a root with id 0 during backref walking

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When doing backref walking to determine if an extent is shared, we are
testing the root_objectid of the given share_check struct is 0, but that
is an impossible case, since btrfs_is_data_extent_shared() always
initializes the root_objectid field with the id of the given root, and
no root can have an objectid of 0. So remove those checks.

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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Filipe Manana 2022-10-11 13:16:59 +01:00 • committed by David Sterba

parent 206c1d32f3

commit c902421927

1 changed files with 2 additions and 4 deletions

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fs/btrfs/backref.c

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