btrfs: remove roots ulist when checking data extent sharedness

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Currently btrfs_is_data_extent_shared() is passing a ulist for the roots
argument of find_parent_nodes(), however it does not use that ulist for
anything and for this context that list always ends up with at most one
element.

Since find_parent_nodes() is able to deal with a NULL ulist for its roots
argument, make btrfs_is_data_extent_shared() pass it NULL and avoid the
burden of allocating memory for the unnused roots ulist, initializing it,
releasing it and allocating one struct ulist_node for it during the call
to find_parent_nodes().

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 13:17:04 +01:00 • committed by David Sterba

parent 84a7949d40

commit b629685803

2 changed files with 1 additions and 6 deletions

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6

fs/btrfs/backref.c

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1

fs/btrfs/backref.h

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