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btrfs: handle block group lookup error when it's being removed

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The unlikely case of lookup error in btrfs_remove_block_group() can be
handled properly, in its caller this would lead to a transaction abort.
We can't do anything else, a block group must have been loaded first.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2024-01-20 02:17:03 +01:00
parent c093bf3065
commit 97ec332068
1 changed files with 3 additions and 1 deletions
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4
fs/btrfs/block-group.c
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@ -1063,7 +1063,9 @@ int btrfs_remove_block_group(struct btrfs_trans_handle *trans,
bool remove_rsv = false;
block_group = btrfs_lookup_block_group(fs_info, map->start);
BUG_ON(!block_group);
if (!block_group)
return -ENOENT;
BUG_ON(!block_group->ro);
trace_btrfs_remove_block_group(block_group);