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btrfs-progs: check: lowmem: introduce repair_block_accounting 

Introduce repair_block_accounting() which calls
btrfs_fix_block_accounting() to repair block group accouting.

Replace btrfs_fix_block_accounting() with the new function.

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>
This commit is contained in:
Su Yue 2018-05-08 16:30:10 +08:00 committed by David Sterba
parent b9fb29a9ba
commit ea8763bd05
1 changed files with 25 additions and 1 deletions
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26
check/mode-lowmem.c
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@ -537,6 +537,30 @@ static int end_avoid_extents_overwrite(struct btrfs_fs_info *fs_info)
return ret;
}
/*
* Wrapper function for btrfs_fix_block_accounting().
*
* Returns 0 on success.
* Returns != 0 on error.
*/
static int repair_block_accounting(struct btrfs_fs_info *fs_info)
{
struct btrfs_trans_handle *trans = NULL;
struct btrfs_root *root = fs_info->extent_root;
int ret;
trans = btrfs_start_transaction(root, 1);
if (IS_ERR(trans)) {
ret = PTR_ERR(trans);
error("fail to start transaction %s", strerror(-ret));
return ret;
}
ret = btrfs_fix_block_accounting(trans, root);
btrfs_commit_transaction(trans, root);
return ret;
}
/*
* This function only handles BACKREF_MISSING,
* If corresponding extent item exists, increase the ref, else insert an extent
@ -4991,7 +5015,7 @@ out:
reset_cached_block_groups(fs_info);
/* update block accounting */
ret = btrfs_fix_block_accounting(trans, root);
ret = repair_block_accounting(fs_info);
if (ret)
err |= ret;
else