btrfs-progs: check: lowmem: start to remove parameters @trans in lowmem

Since extents can be avoided to be overwrittten by excluding or chunk
allocation. It's not necessary to do all repairs in one transaction.

This patch removes parameter @trans of repair_extent_data_item().
repair_extent_data_item() calls try_avoid_extents_overwrite()
and starts a transaction by itself.

Note: This patch and next patches cause error in lowmem repair like:
"Error: Commit_root already set when starting transaction".
Such error will disappear after removing @trans finished.

Signed-off-by: Su Yue <suy.fnst@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>

0 files changed, 0 insertions, 0 deletions